Quality of Life and Satisfaction in Patients Above and Under 65 Years Old Submitted to Total Knee Arthroplasty / Qualidade de vida e satisfação de pacientes com idade superior ou inferior a 65 anos submetidos a artroplastia total de joelho

Abstract Objective To compare the level of quality of life and satisfaction after two years of total knee arthroplasties between individuals above and below 65 years of age and to identify predictor factors of poor clinical outcome and low level of satisfaction in patients undergoing arthroplasty. Methods This is a retrospective cohort with data from patients diagnosed with knee osteoarthritis submitted to primary total knee arthroplasty from 2014 to 2018 (n= 190). Clinical outcomes were assessed using the following scores: visual analog scale (VAS) of pain, EQ-5D-3L and EUROQOL-VAS (quality of life scales), patient satisfaction level, and functional scale of the Knee Injury and Osteoarthritis Outcome Score (KOOS), collected through a questionnaire applied preoperatively, as well as 1, 3, 12 and 24 months after surgery. Results Patients < 65 years old presented significantly lower values (clinical worsening) in KOOS-pain and KOOS-symptoms. There are no differences in the principal clinical scores that assess pain, function, and quality of life after the procedure, as well as in the rate of satisfaction with the procedure, among patients < 65 years old when compared with patients ≥ 65 years old. It was also observed that patients who were not satisfied with the procedure in the 24-month evaluation presented clinical results in some analyzed scores (KOOS-pain and EQ-VAS) similar to patients who declared themselves satisfied. Conclusion Scores that assess pain, function, quality of life, as well as satisfaction rate are similar between patients < 65 years old and those ≥ 65 years old.

Resumo Objetivo Comparar a qualidade de vida e satisfação 2 anos após a artroplastia total de joelho em indivíduos com idade ≥ e < 65 anos e identificar fatores preditivos de pior evolução clínica e baixo nível de satisfação nestes pacientes. Métodos Trata-se de uma coorte retrospectiva de dados de pacientes com diagnóstico de osteoartrite de joelho submetidos a artroplastia total primária de joelho entre 2014 e 2018 (n= 190). Os resultados clínicos foram avaliados de acordo com os seguintes escores: escala visual analógica (EVA) de dor, EQ-5D-3L e EUROQOL-VAS (escalas de qualidade de vida), nível de satisfação do paciente e escala funcional do Knee Injury and Osteoarthritis Outcome Score (KOOS, na sigla em inglês). Estes dados foram coletados por meio de questionário aplicado no período pré-operatório e 1, 3, 12 e 24 meses após a cirurgia. Resultados Os pacientes < 65 anos apresentaram valores significativamente menores (piora clínica) nas escalas KOOS-dor e KOOS-sintomas. Não houve diferenças nas principais pontuações clínicas de dor, função e qualidade de vida após o procedimento, nem no índice de satisfação com a cirurgia, entre pacientes < 65 anos em comparação com aqueles ≥ 65 anos. Observamos também que os pacientes não satisfeitos com o procedimento à avaliação de 24 meses apresentaram resultados clínicos em alguns escores analisados (KOOS-dor e EQ-VAS) semelhantes aos dos pacientes que se declararam satisfeitos. Conclusão Os escores que avaliam dor, função, qualidade de vida e índice de satisfação são semelhantes entre os pacientes < 65 anos e aqueles ≥ 65 anos.

Uso de endoprótesis para el tratamiento de enfermedades no neoplásicas de la rodilla / Use of endoprosthesis for the treatment of non-neoplastic pathologies of the knee

Introducción: Las endoprótesis son el método de elección para la reconstrucción luego de las resecciones oncológicas. Los avances en los materiales y diseños permitieron expandir las indicaciones a enfermedades no neoplásicas. Su montaje intraoperatorio simple y rápido, y su estabilidad mecánica inmediata permiten una rehabilitación y una recuperación funcional tempranas. Sin embargo, la tasa de fallas es elevada, aunque distinta de la de las enfermedades oncológicas. Las causas predominantes son diferentes. Objetivos: Analizar nuestra experiencia con el uso de endoprótesis de rodilla y compararla con los estudios publicados, evaluando los resultados funcional y radiográfico, la supervivencia del implante y las causas de su eventual falla. Materiales y Métodos: Se seleccionaron pacientes con enfermedad no neoplásica compleja de rodilla que requirieran una reconstrucción con endoprótesis. Para el examen clínico y la evaluación funcional se utilizó el puntaje de la Musculoskeletal Tumor Society, y para las fallas de los implantes, la clasificación de Henderson y cols. modificada. Resultados:Se estudiaron 12 endoprótesis, con un seguimiento promedio de 3.8 años. Se registraron 2 fallas (18%), con un tiempo promedio hasta la falla de 47.5 meses. Una fue tipo 2 (aflojamiento aséptico) y la otra, tipo 4 (infección). No hubo otras complicaciones. En la evaluación funcional, el puntaje final medio fue del 76,6%. Conclusión: Nuestros resultados respaldan el uso de endoprótesis para enfermedades complejas no neoplásicas de rodilla en pacientes cuidadosamente seleccionados, pese a ser un procedimiento quirúrgico complejo y con muchas complicaciones. Nivel de Evidencia: IV

Introduction: Endoprosthesis is the gold standard for reconstruction after oncological resections. The advances regarding its materials and designs allowed for the expansion of the indications to non-neoplastic pathologies. Its simple and fast intraoperative assembly and its immediate mechanical stability allow for early rehabilitation and functional recovery. However, the failure rate is high, although it is different from oncological pathologies. The predominant causes are varied. Objectives: To analyze our experience in the use of knee endoprosthesis and compare it with the literature, evaluating functional outcomes, radiographic outcomes, implant survival and causes of eventual failure. Materials and Methods: Patients with complex non-neoplastic knee pathology that required reconstruction with endoprosthesis were selected. Clinical history, anamnesis, physical examination, and radiographs were reviewed. For clinical examination and functional evaluation, the MusculoSkeletal Tumor Society Score (MSTS Score) was used. For implant failures, the modified Henderson et al. classification was used. Results: 12 endoprostheses were studied, with an average follow-up of 3.8 years. Failures were recorded in 2 (18%), with a mean time to failure of 47.5 months. One type 2 failure (aseptic loosening) and one type 4 failure (infection) were recorded. No other complications were noted. For the functional evaluation, the mean final score was 76.6%. Conclusion: Our results support the use of endoprostheses for complex non-neoplastic knee diseases in carefully selected patients, despite being a complex surgical procedure with many complications.Keywords: Endoprosthesis; knee; infection; complications. Level of Evidence: IV

Artroplastia total de rodilla con implante semiconstreñido. Análisis de serie de casos / Semi-constrained knee prosthesis

Introducción: Los implantes semiconstreñidos en la artroplastia total de rodilla están indicados cuando hay compromiso de la estabilidad de la rodilla, ya sea en cirugías primarias o de revisión. materiales y métodos:Se evaluó a 43 pacientes tratados con implantes de constricción condilar varo-valgo, en una misma institución, por el mismo equipo quirúrgico, entre 2015 y 2022. Resultados:Los resultados en las escalas de función WOMAC, KSS y Oxford fueron buenos/muy buenos. Los puntajes fueron menores en pacientes >75 años, si utilizaban asistencia para caminar y si tenían enfermedades previas (estadísticamente significativo). El 86% no tuvo dolor, el 91% estaba satisfecho y el 11% sufrió complicaciones. No hubo infecciones, ni cirugías de revisión. Conclusiones: Respetando las indicaciones y la técnica quirúrgica, las artroplastias totales de rodilla semiconstreñidas con constricción condilar varo-valgo logran buenos resultados a corto y mediano plazo, con una tasa baja de complicaciones, sin diferencias estadísticas en la función entre las cirugías primarias y de revisión. Nivel de Evidencia: III

Introduction: Semi-constrained implants in TKA are indicated in cases where knee stability is compromised, either in primary or revision surgeries. materials and methods:43 patients were evaluated at the same institution, treated by the same surgical team between 2015-2022, with Sigma TC3 (Johnson & JohnsonTM) implants. Results: the WOMAC, KSS function and Oxford functiona-lity scales had good/very good results. The scores were lower in patients over 75 years of age if they used gait assistance and if they had previous pathologies (statistically significant). 86% had no pain, 91% were satisfied, 11% had complications. There were no infections or revision surgeries. Conclusions: TKAs with Sigma TC3 present good outcomes in the short and medium term with a low rate of complications in this series, with no statistical differences in function between primary and revision surgeries. Level of Evidence: III

Factors Associated with the Development of Early Complications after Total Knee Arthroplasty / Fatores associados ao desenvolvimento de complicações precoces após artroplastia total do joelho

Abstract Objective To diagnose risk factors for the development of local or medical postoperative complications up to 30 days after surgery in patients undergoing total knee arthroplasty Methods The present analysis included all patients who underwent knee arthroplasty performed in this hospital during the study period, based on data from medical records of the patients, with the aim of investigating factors related to the occurrence of local or medical complications during hospitalization and up to 30 days after the procedure, if they needed any additional intervention. Results Out of the 157 patients included in the study, 17.1% had some complication. The most prevalent were arthrofibrosis (6.4%), deep infection (4.4%), and superficial infection (2.5%), among others. Older patients and a greater number of previous comorbidities were associated with a higher risk of postoperative complications. Conclusions Older patients and a greater number of comorbidities were related to an increased risk of postoperative complications. The American Society of Anesthesiologists (ASA) score proved to be insufficient to assess the occurrence of complications after knee arthroplasty and new tools should be used for this purpose.

Resumo Objetivo Identificar fatores de risco para o desenvolvimento de complicações pós-operatórias locais ou clínicas ocorridas até 30 dias após a cirurgia em pacientes submetidos a artroplastia total do joelho. Métodos Todos os pacientes submetidos a artroplastia de joelho realizada neste hospital no período do estudo foram incluídos na análise, baseada em dados dos prontuários dos pacientes, para investigar os fatores associados à ocorrência de complicações locais ou clínicas durante o internamento até 30 dias após o procedimento que necessitaram de alguma intervenção. Resultados Dos 157 pacientes incluídos no estudo, 17,1% cursaram com alguma complicação. As mais prevalentes foram artrofibrose (6,4%), infecção profunda (4,4%) e infecção superficial (2,5%), dentre outras. A maior idade e maior número de comorbidades prévias foram relacionadas com maior risco de complicações pós-operatórias. Conclusões A maior idade e maior número de comorbidades foram relacionados a um risco aumentado de complicações pós-operatórias. O escore Sociedade Americana de Anestesiologistas (ASA, na sigla em inglês) se mostrou insuficiente para avaliar a ocorrência de complicações pós artroplastia de joelho e novas ferramentas devem ser empregadas para este fim.

Prótesis unicompartimental de rodilla. Resultados clínico-radiográficos y análisis de la supervivencia del implante / Unicompartmental knee arthroplasty. Clinical-radiographic results and analysis of implant survival

Objetivo: Evaluar los resultados clínicos y radiográficos en pacientes sometidos a artroplastia unicompartimental de rodilla, así como la tasa de complicaciones y la supervivencia del implante. Materiales y Métodos: Estudio descriptivo retrospectivo de 68 pacientes consecutivos (70 rodillas) sometidos a artroplastia unicompartimental de rodilla entre 2013 y 2020, con un seguimiento medio de 57.7 meses (rango 24-105) y una media de la edad de 61 años (rango 34-79). El 46,5% eran hombres. El índice de masa corporal medio era de 29,9 (rango 20-39). El diagnóstico más frecuente fue la artrosis del compartimento femorotibial medial con un varo <7°. Los resultados se evaluaron con la escala analógica visual para dolor y el Knee Society Score (KSS). Se evaluó la incidencia de complicaciones y la tasa de supervivencia del implante. Resultados: La disminución media en la escala analógica visual para dolor fue de 4,4 ± 1,9. Las puntuaciones medias posoperatorias en las escalas funcional y clínica del KSS fueron de 77,4 ± 13,7 y 70,2 ± 17,7, respectivamente. La tasa de complicaciones posquirúrgicas fue del 7% (5 casos). La tasa de reintervención quirúrgica fue del 15,5% (11 pacientes): nueve casos por persistencia del dolor, uno por rigidez articular y otro por aflojamiento aséptico. Conclusiones: La artroplastia unicompartimental de rodilla es una opción terapéutica eficaz para pacientes con gonartrosis unicompartimental de rodilla; se logran buenos resultados clínicos con una aceptable tasa de complicaciones; sin embargo, la tasa de revisión del implante es considerable. Nivel de Evidencia: IV

Objective: To assess the clinical and radiological outcomes of patients who underwent a unicompartmental knee arthroplasty (UKA), as well as the complication rate and implant survival. Materials and Methods: We present a retrospective descriptive study of 68 consecutive patients (70 knees) who underwent UKA between 2013 and 2020, with an average follow-up of 57.7 mon-ths (range 24-105) and an average age of 61 years (range 34-79). 46.5% of the patients were male. The average BMI was 29.9 (range 20-39). The most frequent etiology was osteoarthritis of the medial femorotibial compartment with a varus <7°. To assess the outcomes, the visual analog scale (VAS) for pain and the Knee Society Score (KSS) were used. The complication and implant survival rates were evaluated. Results: The average decrease in the VAS pain scale was 4.4±1.9. The average score on the postoperative KSS functional and clinical scales were 77.4±13.7 and 70.2±17.7, respectively. The postoperative complication rate was 7% (5 cases). The surgical reoperation rate was 15.5% (11 patients): nine cases for persistent pain, one case for joint stiffness, and one case for aseptic loosening. Conclusions: UKA is an effective therapeutic option for patients with unicompartmental knee osteoarthritis, providing good clinical results with an acceptable rate of complications; however, it provides a considerable implant revision rate. Level of Evidence: IV

Resuperficialización de la rótula en el reemplazo primario total de rodilla: estudio comparativo a dos años de seguimiento / Patellar resurfacing in primary total knee replacement: A comparative study at two years of follow-up

Objetivo: Comparar los resultados funcionales del reemplazo total de rodilla con resuperficialización de rótula o sin resuperficialización, a los dos años de seguimiento. materiales y métodos: Estudio observacional retrospectivo de grupos comparativos de pacientes con osteoartritis sometidos a un reemplazo total de rodilla primario con resuperficialización de rótula o sin este procedimiento, entre enero de 2014 y diciembre de 2016, en dos centros de Colombia. A todos se les colocó una prótesis cementada Optetrak®. La función se evaluó antes de la cirugía y a los dos años mediante las escalas Knee Society Score (KSS), Hospital for Special Surgery (HSS) y Oxford Knee Score (OKS). Resultados:Se incluyeron 206 reemplazos totales de rodilla: 94 (grupo con resuperficialización) y 112 (grupo sin resuperficialización). La media de la edad en la cohorte de estudio era de 66.9 ± 9.7 años y el 76,7% (n = 155) eran mujeres. El tiempo quirúrgico fue más prolongado en el grupo con resuperficialización (mediana 100 min, RIC 90-110) que en el otro grupo (mediana 85 min, RIC 70-90; p <0,001). Aunque se observó una mejoría funcional antes del reemplazo total de rodilla y después, en ambos grupos, el cambio en el KSS clínico, el KSS funcional y el OKS fue mejor en el grupo con resuperficialización (p <0,05). Conclusiones: La resuperficialización de rótula durante el reemplazo total de rodilla se asoció a mejores resultados funcionales a los dos años. No obstante, los pacientes sin resuperficialización también refirieron una mejoría funcional después del reemplazo total de rodilla. Nivel de Evidencia: III

Objective: To compare the functional outcomes of total knee replacement (TKR) with and without patellar resurfacing at two years of follow-up. materials and methods: We carried out a retrospective observational study of patients with osteoarthritis who had undergone TKR with or without patellar resurfacing between January 2014 and December 2016 in two hospitals in Colombia. All patients received a cemented Exactech Optetrak prosthesis. Function was evaluated before surgery and after two years of follow-up with the Knee Society Score (KSS), Hospital for Special Surgery (HSS) and Oxford Knee Score (OKS). Results: A total of 206 TKRs were included, 94 in the group with resurfacing and 112 in the group without resurfacing. The mean age was 66.9 ± 9.7 years and 76.7% (n = 155) were female. Surgical time was longer in the group with resurfacing with a median of 100 minutes (Interquartile range-IQR: 90-110) compared to 85 minutes in the group without resurfacing (IQR: 70-90), p <0.001). Although functional improvement was observed before and after TKR in both groups, the change in clinical KSS, functional KSS, and OKS scores before and after TKR was better in the resurfacing group (p <0.05). Conclusion: Patellar resurfacing during TKR was associated with better functional outcomes at two years of follow-up. However, patients without resurfacing also reported functional improvement after TKR. Level of Evidence: III

Comparación de los espaciadores articulados vs. fijos en la revisión de la infección periprotésica de rodilla / Comparison between articulating vs. fixed spacers in revision for periprosthetic knee infection

Introducción: Los espaciadores de cemento con antibiótico pueden ser fijos o articulados y se logra un resultado similar con ambos para erradicar una infección. Nuestro objetivo fue comparar el rango de movilidad articular y los resultados funcionales después del reimplante. Materiales y Métodos: Estudio de cohorte retrospectiva de pacientes sometidos a una revisión de la prótesis de rodilla por infección, en dos tiempos quirúrgicos. Se analizó la funcionalidad según el Knee Society Score (KSS) al año de la cirugía y se registró el rango de movilidad a los 45 días. Se registraron el grado de defecto óseo, dolor, satisfacción, las complicaciones y la recidiva de la infección. Resultados:Se incluyeron 103 pacientes (40 con espaciador articulado, 63 con espaciador fijo). El grupo con espaciador articulado tuvo una mediana 2,5° mayor en la movilidad final (102,5; RIC 95-110 vs. 100; RIC 90-105, p 0,01). Según el KSS funcional y el KSS de rodilla, no hubo diferencias entre ambos grupos. No hubo diferencias en el grado de satisfacción, dolor y el tiempo hasta el reimplante. Las complicaciones fueron similares en ambos grupos, con una tasa de reinfección sin diferencias estadísticamente significativas. Conclusión: Los espaciadores articulados proporcionaron un beneficio en el rango de movilidad después del reimplante de la prótesis. Nivel de Evidencia: III

Introduction: Cement spacers with antibiotics can be fixed or articulating, with similar results in eradicating infection. Our objective was to compare joint range of motion (ROM) and functional outcomes after reimplantation. Materials and Methods: A retrospective cohort study of patients who had undergone a knee prosthetic revision due to infection in two surgical stages. Functionality was analyzed according to the Knee Society Score (KSS) one year after surgery and ROM was recorded 45 days after surgery. Bone defect, pain, satisfaction, complications, and recurrence of infection were recorded. Results:A total of 103 patients were included. 40 with articulating spacers and 63 with fixed spacers. The articulating spacer group presents a median of 2.5 degrees greater in final mobility (102.5 IQR 95-110 vs 100 IQR 90-105, p 0.01). The KSS functional scale and KSS of the knee did not show differences between two groups. There were no differences concerning satisfaction, pain, and time until reimplantation. Complications were similar in both groups, with a reinfection rate without statistically significant differences. Conclusion: Articulating spacers have shown a benefit in ROM after prosthetic reimplantation. Level of Evidence: III

Prótesis unicompartimental lateral de rodilla en el tratamiento del genu valgo artrósico. Resultados en 29 artroplastias con un seguimiento promedio de 6.2 años / Lateral unicompartmental knee arthroplasty for the treatment of lateral knee osteoarthritis. Results in 29 arthroplasties with an average follow-up of 6.2 years

Objetivo: Evaluar, de manera retrospectiva, los resultados funcionales y la supervivencia a mediano plazo de la prótesis unicompartimental lateral de rodilla para tratar el genu valgo artrósico. materiales y métodos: Estudio observacional retrospectivo. Se analizaron los casos operados con prótesis unicompartimental lateral de rodilla por genu valgo artrósico entre enero de 1999 y enero de 2019, seguimiento mínimo de un año. Se evaluaron los resultados clínicos y funcionales mediante el KSS 2011, el grado de artrosis en el compartimento externo y su progresión en el compartimento contralateral con la clasificación de Kellgren y Lawrence, y la condropatía femororrotuliana mediante la clasificación de Outerbridge modificada. Se determinaron la incidencia de complicaciones y la supervivencia de la prótesis. Resultados: Se evaluaron 29 prótesis unicompartimentales laterales de rodilla en 27 pacientes, con un seguimiento promedio de 6.2 años. El KSS clínico y funcional se incrementó de 56,5 ± 9,8 a 91,9 ± 5,3 y de 33,9 ± 13,7 a 91,4 ± 10,3, respectivamente, (p <0,001). La flexión máxima mejoró de 106,6º ± 6,7º a 124,2º ± 2,4º y la contractura en flexión, de 5,2º ± 3,2º a 1º ± 1,6º (p <0,001). El eje preoperatorio fue de 12,3º ± 4,1º de valgo, para un posoperatorio de 5,2º ± 3,1º de valgo (p <0,001). La supervivencia de la prótesis fue del 100%, con un caso de progresión artrósica en el compartimento medial (3,4%). Conclusión: La prótesis unicompartimental lateral de rodilla representa una alternativa válida y definitiva para tratar la patología artrósica femorotibial externa. Nivel de Evidencia: IV

Objective: The purpose of this article is to examine the medium-term functional outcomes and survivorship of lateral unicompartmental knee arthroplasty in the treatment of lateral knee osteoarthritis. Materials and Methods: Retrospective report. We selected and analyzed all patients who had undergone a lateral unicompartmental knee arthroplasty for the treatment of lateral knee osteoarthritis between January 1999 and January 2019, with a minimum follow-up of 1 year. The KSS score system 2011, the Kellgren-Lawrence osteoarthritis classification, the Outerbridge femoropatellar chondropathy classification and serial radiographs were used in the evaluation of each patient. The complication and prosthesis survivorship rates were assessed. Results: We identified 29 lateral unicompartmental knee arthroplasties in 27 patients with a follow-up of 6.2 years (1-19.5). The clinical and functional KSS improved from 56.5 ± 9.8 to 91.9 ± 5.3 and 33.9 ± 13.7 to 91.4 ± 10.3 respectively (p<0.001). Postoperative maximal flexion improved from 106º ± 6.7º to 124.2º ± 2.4º and flexion contracture improved from 5.2º ± 3.2º to 1º ± 1.6º (p<0.001). The average preoperative alignment was 12.3º ± 4.1º of valgus angulation, which was corrected to 5.2º ± 3.1º of valgus (p<0.001). The survivorship rate was 100% and only one patient showed osteoarthritic changes in the medial compartment (3.4%). Conclusion: Lateral unicompartmental knee arthroplasty provides excellent medium-term results. It represents a reliable and definitive option in the treatment of the isolated lateral knee osteoarthritis. Level of Evidence: IV

Un plan protocolizado de rehabilitación domiciliaria tuvo mejores resultados que el tratamiento habitual en pacientes operados de prótesis total de rodilla: cohorte prospectiva / A protocolized home rehabilitation program had better outcomes than the usual care following total knee replacement: a prospective cohort study

Objetivo: comparar los resultados funcionales y de calidad de vida, y algunos indicadores de calidad y satisfacción, entre dos estrategias de cuidados posoperatorios de prótesis total de rodilla: 1) Cuidados protocolizados brindados por la Unidad de Rehabilitación del Hospital Italiano (URED) para pacientes que residen en CABA; 2) Cuidados habituales brindados por el sistema tercerizado de rehabilitación kinésica. Materiales y métodos: cohorte prospectiva de pacientes que fueron sometidos a una cirugía de reemplazo articular de la rodilla en el Hospital Italiano. Fueron evaluados mediante cuestionarios de funcionalidad y calidad de vida percibida, y goniometría, a los 45 días, por kinesiólogos entrenados. Resultados: se incluyeron 81 pacientes en el grupo de cuidados protocolizados y 28 en el de cuidados habituales. Se observaron diferencias estadísticamente significativas en todas las variables evaluadas y destacamos la relevancia clínica de que solamente el 2,43% de los pacientes atendidos en la URED continuaban usando andador a los 45 días frente al 35,71% de los que habían sido atendidos con los cuidados habituales (p = 0,004), así como la menor proporción de pacientes con déficit de flexión (2,47% vs. 46%, respectivamente; p < 0,001) y de extensión (18,52 vs. 75%; p < 0,001) en el mismo lapso, requisitos que son importantes para lograr una marcha funcional. Conclusión: un programa de rehabilitación domiciliaria protocolizada y supervisada por kinesiólogos entrenados mostró ser eficaz para una progresión más rápida hacia una marcha independiente con un menor riesgo de déficit de flexión o de extensión a los 45 días. (AU)

Objective: to compare functionality and quality of life, and some indicators of patient satisfaction, between two postoperative rehabilitation care following total knee replacement: 1) Protocolized care provided by the Italian Hospital Rehabilitation Unit for patients who live in CABA; 2) Usual care provided by the outsourced rehabilitation system. Materials and methods: prospective cohort of patients who underwent total knee replacement at the Italian Hospital were evaluated using questionnaires of functionality and quality of life at 45 days. Results: 81 patients were included in the protocolized care group and 28 in the usual care group. Statistically significant differences were observed in all the variables evaluated, highlighting clinical relevance that only 2.43% of the patients treated by the URED continued using the walker at 45 days vs 35.71% of those who had been treated with the usual care (p = 0.004); as well as the lower proportion of patients with flexion deficit (2.47 vs. 46%, respectively; p < 0.001) and extension (18.52 vs. 75%; p < 0.001) at the same time. Conclusion: a home protocolarized rehabilitation program supervised by a physical therapist proved to be effective for a quicker progression to an independent walk with lower risks of flexion or extension deficits at 45 days. (AU)

Artroplastia total de rodilla en pacientes con secuela de fracturas articulares: Resultados del seguimiento a mediano plazo / Total knee arthroplasty in patients with joint fracture sequela: Mid-term follow-up outcomes

Introducción: Las fracturas articulares de rodilla son frecuentes y pueden evolucionar a gonartrosis postraumática. El tratamiento en su estadio final es el reemplazo total de rodilla (RTR). Cuando se indica, el especialista se enfrenta a situaciones que predisponen a resultados menos satisfactorios. El objetivo de este estudio fue evaluar los resultados del RTR en pacientes con secuela de fracturas articulares de rodilla, con un seguimiento mínimo de 4 años. Materiales y Métodos: Estudio retrospectivo observacional, entre mayo de 1999 y enero de 2013. Se evaluaron 25 RTR en 24 pacientes (edad promedio 67.1 años) con secuela de fractura articular de rodilla y un seguimiento promedio de 6.1 años. Tres (12%) tenían cirugías anteriores al RTR. Ocho se resolvieron en dos tiempos. Se empleó un implante constreñido en 4 pacientes (16%). Se determinaron el KSS, el KSSf y el rango de movilidad preoperatorios y del último control. Se documentó la supervivencia del implante. Resultados: El KSS se incrementó de 38,5 en el preoperatorio a 82,8 en promedio. El KSSf posoperatorio mejoró de 48 a 85. El rango de movilidad aumentó de un promedio de 7,5-76° a 1-102,4° en el posoperatorio. Cuatro casos fueron reoperados. La supervivencia de la prótesis fue del 92% a los 6.1 años. Conclusiones: El RTR es adecuado para la gonartrosis postraumática en su estadio final, con buenos resultados a mediano plazo. Si se logran una adecuada alineación posoperatoria y un correcto posicionamiento de los componentes, los resultados son satisfactorios y se asemejan a los del RTR por gonartrosis idiopática. Nivel de Evidencia: IV

Introduction: Knee joint fractures are common in Orthopedics, and may evolve to post-traumatic Osteoarthritis (PTOA). Total Knee Arthroplasty (TKA) is an effective treatment for the end-stage of this process. When indicated, orthopedic surgeons face many situations that may cause unsatisfactory results and affect prosthesis survival. The purpose of our study was to evaluate TKA outcomes on Osteoarthritis secondary to distal femoral and proximal tibial joint fractures, in cases with a minimum follow-up period of 4 years. Materials and Methods: We carried out an observational, retrospective study on TKA patients treated between May 1999 and January 2013. We evaluated 25 TKAs, performed on 24 patients, with knee fracture sequela, with an average follow-up of 6.1 years and an average age of 67.1 years. Three cases (12%) had required additional surgeries before TKA. Eight cases (32%) were 2-stage surgeries. Constrained implants were used in four cases (16%). The Knee Society Score (KSS), the Functional KSS (KSSf) and the Range of Motion (ROM) were evaluated preoperatively and at the last follow-up. Prosthesis survival evaluation was documented. Results: KSS increased from a preoperative average of 38.5 to a postoperative average of 82.8. Postoperative KSSf increased on average from 48 to 85. ROM increased on average from 7.5°-76° to 1°-102.4°. Four patients required a second surgical procedure. Prosthesis survival was 92% at a 6.1-year average follow-up. Conclusion: TKA is an appropriate treatment for advanced PTOA, with good mid-term outcomes. If adequate postoperative alignment and correct component positioning is achieved, expected outcomes are satisfactory and similar to those with TKA in primary osteoarthritis. Level of Evidence: IV

Resultados a mediano plazo de la prótesis abisagrada rotatoria en el reemplazo total de rodilla primario y de revisión / Mid-term outcomes using rotating-hinge prosthesis for primary and revision total knee arthroplasty

Objetivo: Comunicar los resultados clínicos y radiológicos a mediano plazo de 34 artroplastias totales de rodilla abisagradas rotatorias. Materiales y Métodos: Se evaluó a un grupo de 34 prótesis abisagradas de rodilla. Se indicó una bisagra a 10 pacientes (29,5%) sometidos a una cirugía primaria y a 24 (70,5%), a una cirugía de revisión. La edad promedio de la serie era de 78.5 años (rango 54-85). Resultados: El seguimiento promedio fue de 6.5 años (rango 2-12). El rango de movilidad conseguido fue 110° de flexión (rango 70-130°) y 5° de extensión (rango 0-20°). El puntaje promedio en el KSS mejoró de 38 antes de la cirugía a 82 en el posoperatorio. En la evaluación radiológica, se detectaron líneas radiolúcidas >2 mm alrededor del componente femoral o tibial, o alrededor de los vástagos, en 8 casos (23%). Cinco de 34 pacientes (14,7%) sufrieron complicaciones. En tres casos (8,9%), se trató de una infección profunda. Dos pacientes (5,9%) tuvieron complicaciones rotulofemorales. La supervivencia de la prótesis libre de revisión a los 6.5 años fue del 94%. Si consideramos el aflojamiento aséptico como causa de revisión, la supervivencia fue del 100%. Conclusiones: Las prótesis abisagradas rotatorias de rodilla modernas logran buenos resultados funcionales y de alivio del dolor. También se asocian a bajas tasas de aflojamiento aséptico a mediano plazo. Sin embargo, las complicaciones sépticas son frecuentes. Nivel de Evidencia: IV

Objective: To analyze the clinical and radiological mid-term outcomes of 34 rotating-hinge total knee arthroplasties. Materials and Methods: We studied 34 hinge knee prostheses. The arthroplasty indication was in the setting of primary surgery for 10 patients (29.5%) and in the setting of revision for 24 patients (70.5%). The overall average age was 78.5 years (range, 54-85 years). Results: The average follow-up was 6.5 months (range, 2-12). The achieved range of motion (ROM) was 110° of flexion (range, 70°-130°) and 5° of extension (range, 0°-20°). The average Knee Society Score (KSS) improved from 38 in the preoperative period to 82 in the postoperative period. Radiolucent lines (>2 mm) around the femoral or tibial components or around the stems were observed in 8 patients (23%). Five out of 34 patients (14.7%) developed complications. Three patients (8.9%) developed a deep infection. Two patients (5.9%) developed patellofemoral complications. Prosthesis survivorship without revision was 94% at 6.5 years. And, considering aseptic loosening as a revision cause, prosthesis survivorship was 100%. Conclusion: Modern rotatinghinge knee prostheses provide good outcomes in terms of function and pain relief. They also provide a low rate of aseptic loosening at mid-term follow-up. However, deep infection and septic loosening are common. Level of Evidence: IV

Medium-term Results Evaluation between Gender-Specific x Conventional Total Knee Arthroplasty Prostheses / Avaliação de resultados a médio prazo entre artroplastia total de joelho com prótese gênero-específica x prótese convencional

Abstract Objective To compare the postoperative functional result of total knee arthroplasty (TKA) with gender-specific prosthesis versus TKA with conventional prosthesis in a 5-year period. Methods Retrospective study with functional evaluation of 30 patients (15 patients from each group) using scores (Knee Injury and Osteoarthritis Outcome Score [KOOS], Western Ontario and McMaster Universities arthritis index [WOMAC], and The Knee Society Clinical Rating System [KSS]) and range of motion (ROM) as methods of assessment. Results The differences found between the score values and ROM were not statistically significant. Conclusion The gender-specific prosthesis presents functional results equal to those of conventional prosthesis after 5 years postoperatively.

Resumo Objetivo Comparar o resultado funcional pós-operatório das artroplastias totais de joelho (ATJs) com próteses gênero-específicas x convencionais no prazo de 5 anos. Métodos Estudo retrospectivo com avaliação funcional de 30 pacientes (15 pacientes de cada grupo) utilizando o preenchimento de escores (Knee Injury and Osteoarthritis Outcome Score [KOOS], Western Ontario and McMaster Universities arthritis index [WOMAC] e The Knee Society Clinical Rating System [KSS]) e amplitude de movimento (ADM). Resultados A diferença encontrada entre os valores de escores e ADM não foram estatisticamente significantes. Conclusão A prótese gênero-específica apresenta resultados funcionais iguais aos da prótese convencional no prazo de 5 anos de pós-operatorio.

Sobrevida y complicaciones del uso de prótesis abisagrada en artroplastia de revisión y primaria compleja de rodilla / Survival and complications of use of a hinged prosthesis in revision and complex primary knee arthroplasty

El propósito de este trabajo fue realizar una evaluación retrospectiva, clínica y radiológica, de una serie de pacientes intervenidos quirúrgicamente de una artroplastia total de rodilla con prótesis abisagrada, analizando las causas de falla y complicaciones en el corto y mediano plazo.Se evaluaron un total de veinticuatro prótesis abisagradas de rodilla en reconstrucciones no oncológicas. Trece fueron mujeres y once, hombres, con un promedio de setenta y dos años (cincuenta y tres a ochenta y siete años). El seguimiento promedio fue de cuarenta meses (rango de veinte a setenta meses). En once pacientes la cirugía realizada fue una artroplastia primaria compleja y en trece casos, una cirugía de revisión protésica. Se realizó un examen radiográfico y una evaluación clínica y funcional en el preoperatorio y en el último control mediante la utilización del score de la Knee Society (KSS).Siete pacientes (29%) presentaron complicaciones mayores dentro del primer año de seguimiento; tres pacientes evidenciaron una luxación patelofemoral y dos pacientes presentaron una luxación femorotibial de la prótesis por ruptura del componente abisagrado. El puntaje promedio de la evaluación clínica mediante el score del KSS fue de 36 en preoperatorio (rango 22 a 54 puntos) y de 78 puntos promedio en el último control (rango 56 a 95 puntos), lo que implica una mejora de 42 puntos. La sobrevida del implante fue de 92% a los cuarenta meses. No se observaron diferencias funcionales significativas al comparar los pacientes con artroplastias primarias con aquellos pacientes con artroplastias de revisión.La utilización de implantes abisagrados en artroplastias complejas de rodilla primarias, o de revisión, presentó resultados funcionales y radiológicos aceptables, con una sobrevida del implante del 92% en el mediano plazo, sin embargo, se observa un elevado índice de complicaciones.Tipo de estudio: Serie de casosNivel de evidencia: IV

The purpose of this study was to retrospectively evaluate a series of patients who underwent surgery for a total knee arthroplasty with a hinged prosthesis and determinate clinical and radiological outcomes, analyzing the causes of failure and complications in the short and medium term.A total of twenty-four hinged knee prostheses were evaluated in non-oncological reconstructions. Thirteen were women and eleven men, with an average age of seventy-two years (fifty-three to eighty-seven years). The average follow-up was forty months (range from twenty to seventy months). In eleven cases the patients underwent a complex primary arthroplasty and in thirteen cases a prosthetic revision surgery. Radiographic control and clinical and functional evaluation are performed preoperatively and in the last control using the Knee Society Score (KSS).Seven patients (29%) have a major complication in the first year of follow-up, three patients with an extensor mechanism dislocation and two patients with a prosthetic dislocation because a rupture of the hinged component. The average clinical evaluation KSS score was 36 in the preoperative (range 22 to 54 points) and 78 average points in the last control (range 56 to 95 points), which an improvement of 42 points. Implant survival was 92% at forty months. There are no differences between patients with primary arthroplasties with those with revision arthroplasties.The use of hinged implants in complex primary, or revision knee arthroplasties, provides acceptable functional and radiological results with an implant survival of 92% in the medium term, however we observed a high rate of complications.Type of study: Case series Level of evidence: IV

Cost and Safety Evaluation of Simultaneous Bilateral Total Knee Arthroplasty versus Unilateral Knee / Avaliação de custo e segurança da Artroplastia Total do Joelho Bilateral Simultânea versus Unilateral

Abstract Objective To measure the cost of simultaneous total knee arthroplasty, as well as the costs of total and intensive care unit (ICU) length of stay, perioperative complications and need for blood transfusion compared to the costs of unilateral procedure in a referral hospital, in Federal District, Brazil. Method The present article is a retrospective study analyzing the medical records of patients admitted for unilateral or bilateral total knee arthroplasty, performed between June 2011 and March 2017. Seventy-four medical records were included in the study for evaluation of data such as total cost of the procedure, comorbidities, complications, days of hospitalization, and need for blood transfusion. Results A significantly higher incidence of deep vein thrombosis (DVT) was found in unilateral procedures. Compared to the other data, no statistically significant differences were found in the relative costs or in the need for blood transfusion. Conclusion There was no increase in the cost or in complications when comparing the simultaneous bilateral knee joint replacement procedure with the unilateral procedure, which corroborates most of the literature.

Resumo Objetivo Medir o custo das artroplastias totais de joelho simultâneas, assim como o tempo de internação total e em unidade de tratamento intensivo (UTI), complicações perioperatórias e necessidade de hemotransfusão comparativamente ao procedimento unilateral, num hospital de referência, no Distrito Federal, Brasil. Método O presente artigo trata-se de um estudo retrospectivo de análise dos prontuários de pacientes admitidos para a realização de artroplastia total de joelho uni ou bilateral realizadas entre junho de 2011 e março de 2017. Foram incluídos para o estudo 74 prontuários de pacientes para avaliação de dados como custo total do procedimento, comorbidades, complicações, dias de internação e necessidade de hemotransfusão. Resultados Uma incidência significativamente maior de trombose venosa profunda (TVP) foi encontrada nos procedimentos unilaterais. Em relação aos outros dados não foram encontradas diferenças estatisticamente significantes nos custos relativos, nem na necessidade de hemotransfusão. Conclusão Não houve aumento nos custos nem nas complicações do procedimento de substituição articular bilateral do joelho num mesmo momento em relação ao procedimento unilateral, corroborando com a maioria da literatura.

Artroplastía total de rodilla con asistencia de brazo-robótico: resultados clínicos postoperatorios tempranos / Robotic arm-assisted total knee arthroplasty: early postoperative results

OBJETIVO: Describir los resultados clínicos postoperatorios tempranos de la primera serie de pacientes operados de artroplastía total de rodilla (ATR) con asistencia de brazo-robótico en Latinoamérica. MATERIALES Y MÉTODOS: Estudio prospectivo de 52 pacientes (53 rodillas) con gonartoris tricompartimental sintomática operados de ATR primaria con asistencia de brazo-robótico (RIO-MAKO) de manera consecutiva, con seguimiento a 2 meses postoperados. No se excluyeron pacientes. Se utilizó el mismo protocolo anestésico y de rehabilitación. Se realizó revisión de fichas clínicas para recolectar los siguientes resultados: tiempo de isquemia quirúrgica, estadía hospitalaria, tiempo a marcha, dolor postoperatorio diario [Escala visual análoga (EVA)], uso de opioides, rangos de movilidad articular (ROM), pérdida sanguínea, complicaciones y eje mecánico postoperatorio. RESULTADOS: Tiempos de Isquemia: 82 minutos (60­120). Estadía Hospitalaria: 4 días (2­12). Dolor postoperatorio: EVA el mismo día operatorio de 0 (0­10) y previa al alta de 0 (rango 0­4), con 0,3 purgas (0­6,5) de opioides por paciente. Tiempo a marcha (día logrado): 1 día (1­3), cuarenta y cinco pacientes (84,9%) iniciaron la marcha el primer día postoperatorio. ROM (Extensión-Flexión): Aumento progresivo durante el seguimiento. En el control ambulatorio de los dos primeros meses [23 días (13­50)], veintiún pacientes (40%) alcanzaron un ROM mayor o igual a 0­90° y once (20%) presentaron un ROM funcional máximo (0­120°). Pérdida sanguínea: Siete pacientes (13,2%) requirieron transfusión. Complicaciones: un paciente (1,89%) presentó una dehiscencia del cierre de la artrotomía. No hubo otras complicaciones. Eje mecánico postoperatorio: 179,1° (178,2­180). DISCUSIÓN: Los resultados concuerdan con la evidencia descrita en otras regiones, sugiriendo que la asistencia de brazo-robótico permite resultados postquirúrgicos reproducibles. CONCLUSIÓN: Los resultados clínicos postoperatorios tempranos de esta serie de pacientes operados de ATR con asistencia de brazo-robótico, muestran una baja percepción del dolor, con bajo consumo de opioides, una rápida recuperación funcional de la marcha y ROM, y excelentes resultados desde el punto de vista del eje mecánico postoperatorio. NIVEL DE EVIDENCIA: IV.

OBJECTIVE: Describe the early clinical postoperative outcomes, of the first series of patients operated on Robotic Arm-Assisted Total Knee Arthroplasty (TKA) in Latin America. MATERIAL AND METHOD: Retrospective study including 52 patients (53 knees) with advanced symptomatic knee osteoarthritis, consecutively operated on Robotic ArmAssisted TKA (RIO-MAKO) during October 2018 and May 2019 with two months of follow-up. No patients were excluded from the study. The same anesthetic and rehabilitation protocol was followed for all patients. Data were obtained from the clinical files for the following outcomes: Surgical tourniquet time, hospital stay, time to walk, postoperative daily pain [Visual Analog Scale (VAS)], opioid consumption, range of motion (ROM), blood loss, complications, and the attained postoperative mechanical axis. RESULTS: Tourniquet Time: 82 minutes (60­120). Hospital Stay: 4 days (2­12). Postoperative Pain: VAS of 0 (0­10) the same day of surgery, and 0 (0­4) before discharge. The opioid consumption was 0,3 purge (0­6,5) per patient. Time to Walk (Day achieved): 1st day (1­3), forty-five patients (84,9%) walked on their first postoperative day. ROM (Extension-Flexion): progressively increases during the follow up. On the first two-month visits [23 days (13­50)], twenty-one patients (40%) reached a ROM equal or superior to 0­90°, and eleven (20%) presented a maximal functional ROM (0­120°). Blood Loss: Seven patients (13.2%) required a blood transfusion. Complications: one patient (1.89%) presented dehiscence of the arthrotomy closure. No other complications were registered. Postoperative Mechanical Axis: 179.1° (178.2­180). DISCUSSION: The results coincide with the reported evidence from other regions. Robotic-arm assistance may generate reproducible postoperative results. CONCLUSIONS: The early postoperative clinical results of this series of patients operated on Robotic Arm-Assisted TKA show a low pain perception and opioid use, a rapid functional rehabilitation in terms of gait and ROM, and excellent postoperative mechanical alignment. LEVEL OF EVIDENCE: IV.

Pulmonary hypertension could be a risk for deep vein thrombosis in lower extremities after joint replacement surgery

SUMMARY A background of Pulmonary Hypertension (PH) indicates a progressive elevation of pulmonary vascular resistance, leading to overfilling, elevation of venous pressure, congestion in various organs, and edema in the venous system. This study aimed to investigate whether PH is a risk factor for deep vein thrombosis (DVT) of the lower extremities after hip and knee replacement surgery. METHODS A total of 238 patients who received joint replacement of lower extremities in our department of orthopedics from January 2009 to January 2012 were examined by echocardiography and Color Doppler flow imaging (CDFI) of the lower extremities. Based on pulmonary artery pressure (PAP), the patients were divided into a normal PAP group (n=214) and PH group (n=24). All the patients were re-examined by CDFI during post-operative care. RESULTS Among the 238 patients, 18 had DVT in the lower extremities after the operation. DVT total incidence rate was 7.56% (18/238). In the PH group, 11 patients had DVT (45.83%, 11/24), but in the normal PAP group, only 7 had DVT (3.27%, 7/214). The incidence of DVT was significantly lower in the normal PAP group than in the PH group (P<0.01). In addition, there was a positive correlation between PAP and the incidence of DVT. CONCLUSION PH could be a high-risk factor for the occurrence of DVT in patient's lower extremities after joint replacement surgeries.

RESUMO OBJETIVO A hipertensão pulmonar (HP) indica elevação progressiva da resistência vascular pulmonar, levando ao excesso de enchimento, elevação da pressão venosa, congestão em vários órgãos e edema no sistema venoso. Este estudo teve como objetivo investigar se a HP é um fator de risco para trombose venosa profunda (TVP) das extremidades inferiores após cirurgia de prótese de quadril e joelho. MÉTODOS Um total de 238 pacientes que receberam a substituição da articulação das extremidades inferiores em nosso departamento de ortopedia de janeiro de 2009 a junho de 2012 foi examinado por ecocardiograma e fluxo de imagem Doppler colorido (CDFI) dos membros inferiores. De acordo com a pressão arterial pulmonar (PAP), os pacientes foram divididos em grupo PAP normal (n=214) e grupo PH (n=24). Todos os pacientes foram reexaminados por CDFI durante os cuidados pós-operatórios. RESULTADOS Entre os 238 pacientes, 18 pacientes tiveram TVP nas extremidades inferiores após a operação. A taxa de incidência total de TVP foi de 7,56% (18/238). No grupo PH, 11 pacientes tiveram TVP (45,83%, 11/24), mas no grupo PAP normal, apenas sete pacientes tiveram TVP (3,27%, 7/214). A incidência de TVP foi significativamente menor no grupo PAP normal do que no grupo PH (P<0,01). Além disso, houve uma correlação positiva entre a PAP e a incidência de TVP. CONCLUSÃO A HP poderia ser um fator de alto risco para a ocorrência de TVP nas extremidades inferiores do paciente após cirurgias de substituição articular.

Ultrasound-guided adductor canal block using levobupivacaine versus periarticular levobupivacaine infiltration after totalknee arthroplasty: a randomized clinical trial

ABSTRACT BACKGROUND: Both postoperative pain control and range of motion are important in total knee arthroplasty (TKA). However, in the literature, there is little comparison of peripheral nerve blocks and periarticular infiltration techniques using levobupivacaine. The aim of our study was to measure pain with visual analogue scale (VAS) and knee range of motion (ROM) between in patients undergoing adductor canal block (ACB) for TKA using levobupivacaine compared to periarticular levobupivacaine infiltration (PAI-L). DESIGN AND SETTING: Prospective randomized clinical trial in a university hospital. METHODS: Patients aged 40-85 years who underwent unilateral TKA were included; 39 were treated withperiarticular infiltration using 40 ml (0.125 mg) of levobupivacaine (PAI-L group); and 40 were treated with ACB using 20 ml of 0.25% levobupivacaine (ACB-L group). Postoperative pain scores at rest and during active physical therapy were assessed using a VAS, along with knee ROM in flexion and extension. In addition, 100-foot walking time results, total morphine consumption and time of first analgesia requirement were recorded postoperatively. RESULTS: VAS scores at rest and during active physical therapy and the total amount of morphine consumed were lower in the ACB-L group than in the PAI-L group (P < 0.05). In contrast, knee ROM in flexion and extension and 100-foot walking times were greater in the PAI-L group than in the ACB-L group (P < 0.05). CONCLUSION: ACB-L was superior to PAI-L regarding pain treatment after TKA; however, PAI-L was superior to ACB-L regarding postoperative ROM and walking ability. CLINICAL TRIAL REGISTRY: ACTRN-12618000438257.

Balance and quality of life after total knee arthroplasty / Equilíbrio e qualidade de vida após artroplastia total de joelho

ABSTRACT Objective: To evaluate the change in balance and quality of life in patients undergoing total knee arthroplasty for primary gonarthrosis. Method: Patients aged 60 years or older were evaluated in relation to the balance and quality of life before total knee arthroplasty and six months after surgery. To assess balance, this study used the Motor Scale Test for the Elderly; quality of life was assessed using the Western Ontario and McMaster Universities Osteoarthritis Index questionnaire and the Short Form Health Survey. A control group consisting of healthy adults, age- and gender-paired, was used to compare the balance after surgery results. Results: Twenty-eight patients completed the study, of a total of 37 arthroplasties. The mean age was 70.18 ± 6.17 years. All variables were statistically significant (p ≤ 0.05) for improved balance and quality of life after arthroplasty. It was observed that, after knee arthroplasty, the level of balance does not reach that expected for healthy individuals (p ≤ 0.05). Conclusion: Total knee arthroplasty is effective at improving balance six months after surgery, as well as all domains of quality of life. However, it is not able to restore balance to a level comparable to that of healthy individuals.

RESUMO Objetivo: Avaliar o equilíbrio e a qualidade de vida em pacientes submetidos a artroplastia total do joelho por gonartrose primária. Método: Pacientes com 60 anos ou mais foram avaliados em relação ao equilíbrio e à qualidade de vida antes da artroplastia total de joelho e seis meses após a cirurgia. Para avaliar o equilíbrio, foi usado o teste da Escala Motora para a Terceira Idade; para avaliar a qualidade de vida, foram usados os questionários Western Ontario and McMaster Universities Osteoarthritis Index e Short Form Health Survey. Um grupo controle de indivíduos saudáveis, pareado por idade e gênero, foi usado para comparação dos níveis de equilíbrio do grupo em estudo após a cirurgia. Resultados: Completaram o estudo 28 pacientes, em 37 artroplastias. A média de idade foi de 70,18 ± 6,17 anos. Em todas as variáveis analisadas, observou-se significância estatística (p ≤ 0,05) para melhoria do equilíbrio e da qualidade de vida após a artroplastia. Observou-se que, após artroplastia do joelho, o nível de equilíbrio não alcança o nível esperado para indivíduos saudáveis (p ≤ 0,05). Conclusão: A artroplastia total de joelho é capaz de melhorar o equilíbrio seis meses após a cirurgia, bem como todos os domínios da qualidade de vida. No entanto, não é capaz de restaurar o equilíbrio comparável àquele dos indivíduos saudáveis.

Uso tópico de ácido tranexámico en el reemplazo total de rodilla primario / Topical administration of tranexamic acid in primary total knee replacement

Introducción: El reemplazo total de rodilla es un procedimiento que puede generar una gran perdida de sangre durante el periodo posoperatorio. El acido tranexamico es un agente sintetico antifbrinolitico que, en los ultimos anos, se ha administrado por via intravenosa, con buenos resultados, al reducir el sangrado asociado al reemplazo total de rodilla. Sin embargo, existe escasa experiencia con su uso topico. Materiales y Métodos: Se llevo a cabo un estudio comparativo retrospectivo de 117 reemplazos totales de rodilla primarios, para comparar los resultados obtenidos en 63 cirugias con el uso topico de acido tranexamico y en 54 reemplazos sin acido tranexamico. Se compararon la tasa de transfusion, las concentraciones de hemoglobina y hematocrito a las 24 y 48 h, las curaciones requeridas, las comorbilidades y las complicaciones. Resultados: En el grupo con acido tranexamico topico, se redujo un 43,9% la tasa de transfusiones cuando se lo comparo con el otro grupo. Ademas, se registro una disminucion de 0,2-1,3 g/dl en la caida de la hemoglobina a las 24 h de la cirugia. No se detectaron complicaciones. Conclusiones: El uso topico de acido tranexamico en reemplazos totales primarios de rodilla disminuye los requerimientos de transfusiones, sin incrementar el riesgo de complicaciones. Nivel de Evidencia: III

Introduction: Total knee replacement is associated with extensive postoperative blood loss. Tranexamic acid is a synthetic antifibrinolytic agent that, in the last few years, has been successfully used intravenously to reduce bleeding after total knee replacement. However, topical application of tranexamic acid in total knee replacement remains largely unexplored. Methods: A retrospective study of 117 primary total knee replacements was conducted: 63 surgeries with topical tranexamic acid and 54 replacements without tranexamic acid. A comparison analysis was made, capturing results of blood transfusion rates, postoperative hemoglobin levels (24 and 48 hours), number of changed bandages, comorbidities and complications. Results: Tranexamic acid reduced blood transfusion rate by 43.9% when compared with the group without tranexamic acid. A lower decline in postoperative hemoglobin levels (24 hours) by 0.2-1.3 g/dL was also observed in this same group. There were no complications in both groups. Conclusions: Topically applied tranexamic acid was effective in reducing the need for blood transfusion following total knee replacement, without additional adverse effects. Level of Evidence: III