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1.
World J Methodol ; 13(4): 359-365, 2023 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-37771874

RESUMO

BACKGROUND: The anteromedial meniscofemoral ligament (AMMFL) is a very rare entity, commonly unrecognized and underreported. Although it was not proved to be a cause of anterior knee pain, concerns have been raised on the relationship between the presence of this structure and medial meniscus injury secondary to its abnormal motion. Regarding histologic examination, some studies have shown meniscus-like fibrocartilage, while others have identified it as ligament-like collagenous fibrous connective tissue. CASE SUMMARY: We report the case of a 34-year-old ballerina with an AMMFL associated with a torn medial meniscus of both knees. Surgery was performed to treat the meniscal injury and two biopsies of each AMMFL were taken in different locations to define the histopathological composition. Histologic examination revealed fibrocartilaginous tissue compatible with meniscus. Follow-up evaluation one year after surgery evidenced full remission of symptoms and the patient had resumed her athletic activities. CONCLUSION: Clinical, magnetic resonance imaging, arthroscopic, and histological features have been carefully described to better characterize the AMMFL.

2.
J ISAKOS ; 8(6): 451-455, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37619961

RESUMO

BACKGROUND: There is controversy regarding various aspects of simultaneous bilateral total knee replacement (SBTKR). We found disparity in the postoperative outcomes and complications associated with the procedure in the literature linked with the topic. OBJECTIVE: To retrospectively analyze the need for blood transfusion after surgery and complications associated with total knee replacement according to the type of procedure (SBTKR or unilateral). METHODS: Retrospective cohort analytical study. We included 251 patients with severe knee osteoarthritis that were divided into two groups. 124 (49%) who underwent SBTKR and 127 upon whom unilateral total knee replacement (UTKR) was performed. Demographic data, days of hospitalization, complications within the first 90 days after surgery (thromboembolic events, superficial and deep infection, stiffness, death); and percentages of patients transfused with blood products during hospitalization were evaluated. RESULTS: There were no statistical differences in the analysis of postoperative complications in the first 90 days after surgery. In the SBTKR group, 8 patients (6.5%) presented some thromboembolic complication during the postoperative period, while this event was observed in only 2 patients (1.5%) from the other group. The analysis showed a statistically significant drop in postoperative hemoglobin, on average that of 0.8 â€‹g/dl, in the SBTKR patient group compared to the UTKR group (95% CI 0.44-1.13; p â€‹< â€‹0.001). A higher proportion of patients who required transfusion were observed in the SBTKR group (40%) (OR â€‹= â€‹7.12; 95% CI 3.3-16; p â€‹< â€‹0.001). We analyzed the cause of postoperative transfusion in the patients who required transfusion taking into account two parameters: hemoglobin less than 8 â€‹g/dl and the clinical needs of the patients (symptoms of hypotension, decay, difficulty to rehabilitate without pain, dyspnea). 59 patients received transfusion (50 in the SBTKR group and 9 in the other group). Of these, 19 patients (32.2%) did not meet any transfusion criteria. CONCLUSION: We consider SBTKR a safe procedure, which does not increase postoperative complications compared to UTKR. Although there is an increase in blood loss in SBTKR, it does not generate clinical symptoms of relevance. LEVEL OF EVIDENCE: Level III.


Assuntos
Artroplastia do Joelho , Tromboembolia , Humanos , Estudos Retrospectivos , Artroplastia do Joelho/efeitos adversos , Transfusão de Sangue , Complicações Pós-Operatórias/epidemiologia , Hemoglobinas , Tromboembolia/complicações
3.
Rev Fac Cien Med Univ Nac Cordoba ; 79(3): 267-271, 2022 09 16.
Artigo em Espanhol | MEDLINE | ID: mdl-36149068

RESUMO

Introduction: Lower limb discrepancy after total knee arthroplasty (TKA) is common. The main objective of this study is to evaluate the incidence of lower limb discrepancy after TKA. Materials and methods: this is an observational analytical retrospective cohort study. We have included all the patients who underwent unilateral TKA with the same type of implant. The limb length was measured with a panoramic lower limb x-ray. The cut-off point to consider the discrepancy was > 10 mm. The type of deformity and the functional outcomes were evaluated. Results: In a total of 60 patients, 18 (30%) showed a lower limb discrepancy. Out of the patients who presented discrepancy, the most frequent deformity was valgus deformity with a 55,6% followed by varus deformity with 38.89% and 5.56% with neutral axis. The functional outcomes according to the KSS score and the postoperative knee KSS score demonstrated no difference in long term follow up between both groups. Conclusions: the incidence of lower limb discrepancy after TKA was 30%. None of the patients required surgery as a consequence of the discrepancy. The functional outcomes and pain in a long term follow up did not demonstrate differences between both groups.


Introducción: La discrepancia de longitud en miembros inferiores en pacientes con reemplazo total de rodilla (RTR) es una situación frecuente. El objetivo principal fue evaluar la incidencia de discrepancia de longitud en pacientes operados de RTR. Materiales y métodos: Estudio observacional, analitico de cohorte retrospectiva. Se incluyeron todos los pacientes operados de RTR unilateral, que hayan sido operados con un mismo implante. La medición de longitud del miembro inferior fue realizada mediante una radiografía panorámica de miembros inferiores. Se consideró la discrepancia con un punto de corte > 10 mm. Se evaluó el tipo de deformidad o deseje preoperatorio y los resultados funcionales alejados. Resultados: Se incluyeron un total de 60 pacientes, de los cuales 18 presentaron una discrepancia de longitud en los miembros inferiores (30%). De los pacientes que presentaron discrepancia la deformidad más frecuente fue el deseje en valgo en un 55,56% seguido por el varo 38,89% y 5,56% un normoeje. Los resultados según la escala KSS funcional y KSS de la rodilla posoperatorio al seguimiento alejado no demostró diferencias entre ambos grupos. Conclusiones: La incidencia de discrepancia de longitud de miembro inferior tras el RTR fue del 30%. No se requirió  intervención como consecuencia de dicha discrepancia. Los resultados funcionales y dolor al seguimiento alejado no demostraron diferencias entre ambos grupos.


Assuntos
Artroplastia do Joelho , Osteoartrite do Joelho , Artroplastia do Joelho/efeitos adversos , Humanos , Articulação do Joelho/cirurgia , Extremidade Inferior/cirurgia , Osteoartrite do Joelho/cirurgia , Estudos Retrospectivos
4.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1399051

RESUMO

Introducción: El ácido tranexámico reduce la pérdida sanguínea y los requerimientos de transfusiones luego de un reemplazo total de rodilla. Una de sus contraindicaciones relativas son los antecedentes de colocación de prótesis intravasculares coronarias, por un supuesto aumento de eventos tromboembólicos. materiales y métodos:Análisis retrospectivo de pacientes sometidos a un reemplazo total de rodilla primario y de revisión que recibieron ácido tranexámico y tenían antecedente de colocación de prótesis intravascular coronaria. Se los comparó con un grupo sin estas prótesis. Se analizó la presencia de cualquier cambio clínico o electrocardiográfico de oclusión coronaria aguda, eventos tromboembólicos, el requerimiento de transfusión sanguínea y el nivel de hemoglobina pre y posoperatorio. Resultados: 57 pacientes (59 cirugías, 56 reemplazos primarios y 3 revisiones) con colocación de prótesis intravascular coronaria, al menos, un año antes de la artroplastia. Un paciente tuvo síntomas de síndrome coronario agudo y cambios en el electrocardiograma. No hubo diferencias en la cantidad de eventos tromboembólicos. Solo un paciente del grupo de control recibió una transfusión de glóbulos rojos. El sangrado relativo fue menor en el grupo coronario independientemente del uso crónico de aspirina y clopidogrel antes de la cirugía (2,09 vs. 3,06 grupo de control; p = 0,01). En pacientes del alto riesgo, el ácido tranexámico no se asoció con más eventos tromboembólicos. Conclusiones: El ácido tranexámico impresionó ser seguro y efectivo en nuestro grupo de pacientes con prótesis intravasculares coronarias; sin embargo, se necesita un estudio prospectivo con más casos para confirmar estos resultados. Nivel de Evidencia: IV


Introduction: Tranexamic acid (TXA) reduces blood loss and need for a transfusion after total knee arthroplasty (TKA). However, patients with a history of coronary artery (CA) stent placement might be at increased risk for thromboembolic complications. Materials and methods: We performed a retrospective analysis of patients with a history of coronary stenting who had undergone primary and revision TKA and received preoperative TXA. A comparison was made with a group of patients without coronary stenting. The presence of any clinical or electrocardiographic changes of acute coronary occlusion, thromboembolic events (TEE), blood transfusion, and pre- and postoperative hemoglobin levels were analyzed. Results: 57 patients underwent 59 TKA surgeries (56 primary and 3 revisions) with a history of coronary stenting at least 1 year before arthroplasty. One patient presented symptoms of acute coronary syndrome and electrocardiogram (ECG) changes. There were no differences in the number of thromboembolic events. Only 1 patient received red blood cell transfusion in the control group. Relative bleeding was lower in the coronary group regardless of chronic use of aspirin and clopidogrel before surgery (2.09 vs 3.06 in the control group; p=0.01). In high-risk patients, TXA was not associated with higher TEEs. Conclusions: Although TXA seemed safe and effective in this database review of patients with previous placement of CAS; a larger prospective trial is warranted to confirm these results. Level of Evidence: IV


Assuntos
Idoso , Ácido Tranexâmico/uso terapêutico , Estudos Retrospectivos , Doença das Coronárias , Artroplastia do Joelho
5.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1358108

RESUMO

La trombosis arterial luego de una artroplastia total de rodilla es una complicación poco frecuente; sin embargo, puede tener consecuencias devastadoras. Describimos un caso de una oclusión arterial después de una artroplastia total de rodilla en una mujer de 85 años. Inicialmente, la presentación clínica nos hizo pensar en una manifestación de la enfermedad de Raynaud (la paciente tenía antecedente de síndrome de CREST). Entre los diagnósticos diferenciales también se planteó un síndrome de dolor regional complejo, que retrasó el diagnóstico durante dos semanas. Finalmente, el diagnóstico y el tratamiento se realizaron mediante angiografía. La recuperación funcional fue completa. La baja frecuencia de esta lesión puede determinar que el diagnóstico sea un desafío para el cirujano. En este caso, la oclusión parcial de las arterias evitó complicaciones más graves. Nivel de Evidencia: IV


Arterial thrombosis after total knee replacement (TKR) is a rare complication; however, it can lead to disastrous consequences. We describe a case of an arterial occlusion after TKR in an 85-year-old female patient. Initially, the clinical presentation made us con-sider Raynaud (she had a history of CREST) and complex regional pain syndrome, which delayed the diagnosis for 2 weeks. Diagnosis and treatment were accomplished with angiography and the patient achieved a full recovery. The low frequency of this injury may make diagnosis a challenge for the surgeon. In this case, partial occlusion of the arteries avoided more serious complications. Level of evidence: IV


Assuntos
Idoso de 80 Anos ou mais , Distrofia Simpática Reflexa , Artroplastia do Joelho , Trombose Venosa , Diagnóstico Tardio
6.
Rev. Asoc. Argent. Ortop. Traumatol ; 86(4) (Nro Esp - ACARO Asociación Argentina para el Estudio de la Cadera y Rodilla): 483-492, 2021.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1353949

RESUMO

Introducción: Las alternativas reconstructivas para defectos óseos severos en la cirugía de revisión de prótesis son las camisas metafisarias, los conos de metal trabecular y el injerto óseo impactado o estructural. El objetivo del estudio fue analizar la tasa de osteointegración de los conos de metal trabecular en pacientes con cirugía de revisión de prótesis total de rodilla. El objetivo secundario fue analizar los resultados funcionales, las tasas de complicaciones y reoperaciones. Materiales y Métodos: Cohorte retrospectiva de pacientes con conos de metal trabecular colocados en la cirugía de revisión de prótesis y un seguimiento mínimo de 2 años. Se evaluaron las causas de la revisión, cirugías previas, tipo de defecto óseo, cantidad y tipo de conos utilizados, y los diseños de las prótesis. Se realizó una evaluación clínico-radiográfica, se registraron las complicaciones y las revisiones ulteriores. Resultados: Se evaluó a 35 pacientes (49 conos de metal trabecular) en forma retrospectiva, con un seguimiento promedio de 32.1 meses. La mayoría de los defectos eran tibiales AORI 3, seguidos de los femorales tipo 3. La tasa de osteointegración de los conos fue del 94%; la de complicaciones, del 20% y la de reoperaciones, del 8,5%. El KSS objetivo promedio aumentó de 39 en el preoperatorio a 71 en el último control y el puntaje de la EAV promedio fue 8 y 2,5, respectivamente. Conclusión: La excelente tasa de osteointegración (94%) y los buenos resultados clínicos posicionan a los conos de metal trabecular como una alternativa para los defectos óseos severos. Nivel de Evidencia: IV


Introduction: Major bone defects represent a challenge during revision total knee arthroplasty (TKA) and there is still considerable debate about the best therapeutic option. The purpose of this study was to retrospectively assess the osseointegration rate of trabecular metal cones in revision TKA with severe bone defects. The secondary purpose was to evaluate the functional outcomes and complication and reoperation rates. Materials and Methods: A single-center, retrospective cohort including all consecutive cases of revision TKA using trabecular metal cones. All patients with a minimum 2-year follow-up were included in the study. Reasons for revision, number of previous surgeries, type of bone defect, and number and type of trabecular cones used were evaluated. Clinical and radiological outcomes were also analyzed as well as complications rates. Results: 35 patients (49 cones) were evaluated with a mean follow-up of 32.1 months (24-62). Most defects were localized in the tibia and were classified as AORI type 3. The rate of osseointegration of the cones was 94%; the complication rate, 20%; and the reoperation rate, 8.5%. The mean KSS increased from 39 preoperatively to 71 at the last follow-up, and the mean VAS from 8 to 2.5. Conclusion: The excellent osseointegration rate (94%), added to the good clinical outcomes, position the trabecular metal cones as an alternative to treat severe bone defects. Level of Evidence: IV


Assuntos
Reoperação , Tantálio , Reabsorção Óssea , Seguimentos , Osseointegração , Resultado do Tratamento , Artroplastia do Joelho
7.
Rev. Asoc. Argent. Ortop. Traumatol ; 86(4) (Nro Esp - ACARO Asociación Argentina para el Estudio de la Cadera y Rodilla): 493-500, 2021.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1353950

RESUMO

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


Assuntos
Pessoa de Meia-Idade , Idoso , Reoperação , Resultado do Tratamento , Infecções Relacionadas à Prótese , Artroplastia do Joelho
8.
Rev. Asoc. Argent. Ortop. Traumatol ; 86(4) (Nro Esp - ACARO Asociación Argentina para el Estudio de la Cadera y Rodilla): 519-528, 2021.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1353953

RESUMO

Introducción: El reemplazo total de rodilla en pacientes con anquilosis representa un desafío para el cirujano, tanto por la alta demanda técnica de la cirugía como por la elevada tasa de complicaciones comunicada. El objetivo de este artículo es presentar tres pacientes con anquilosis tratados con un reemplazo total de rodilla y una revisión bibliográfica actualizada. materiales y métodos: Se evaluaron las distintas etiologías, la movilidad preoperatoria, la técnica quirúrgica y el tipo de implante utilizado en cada caso. En el seguimiento, se evaluaron la tasa de complicaciones, el rango de movilidad y la supervivencia del implante. Por último, se realizó una revisión actualizada de la bibliografía. Resultados: Dos pacientes tenían artritis reumatoide juvenil y uno, una secuela de osteomielitis crónica de rodilla. Los pacientes no tenían movilidad articular y sufrían un severo compromiso para realizar las actividades de la vida cotidiana. En los tres pacientes, se efectuó un abordaje pararrotuliano medial seguido de una amplia liberación de partes blandas. En dos casos, se utilizaron prótesis primarias con vástagos y, en el restante, una prótesis de bisagra rotacional. El rango de movilidad alcanzado fue de 90° en promedio y los pacientes refirieron una tasa alta de satisfacción. No se registraron complicaciones. Conclusiones: El reemplazo total de rodilla en pacientes con anquilosis es una opción terapéutica por considerar, y tiene un impacto beneficioso en la calidad de vida. Por la complejidad que representa debe afrontarse como una cirugía de revisión, con una detenida planificación preoperatoria. Nivel de Evidencia: IV


Introduction: Performing a Total Knee Replacement (TKR) in patients with ankylosed knees is technically demanding and associated with considerable complications. The purpose of this study is to report three cases of patients with ankylosed knees treated with TKR and present an updated literature review. Materials and methods: We evaluated etiologies, preoperative range of motion, surgical technique and type of implant utilized in each case. Complications and postoperative range of motion were also analyzed. Radiographs were used to evaluate loosening or osteolysis. Lastly, we performed an updated literature review. Results: The etiologies were juvenile rheumatoid arthritis in two cases and chronic osteomyelitis in one. The patients did not have range of motion at all and the ability to perform daily life activities was severely affected. A medial parapatellar approach was used in all cases followed by an extensive soft tissue release. A primary posterior-stabilized design was used in two cases and a rotating-hinge in one case. The mean postoperative range of motion was 90° and all three patients reported a high satisfaction rate. No complications were reported. Conclusions: TKR in patients with ankylosed knees has substantially improved the clinical outcome and the arc of movement. Due to its complexity, it must be approached as a revision surgery, with careful preoperative planning. Level of Evidence: IV


Assuntos
Adolescente , Adulto , Pessoa de Meia-Idade , Amplitude de Movimento Articular , Resultado do Tratamento , Artroplastia do Joelho , Articulação do Joelho/cirurgia , Anquilose
9.
J Arthroplasty ; 35(6S): S168-S172, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32253065

RESUMO

BACKGROUND: Numerous strategies exist for pain management after total knee arthroplasty (TKA), with a fast recovery and early ambulation required for full function. Currently, there is no universal standard of care to facilitate this management. We assessed pain management safety and efficacy after TKA, using intra-articular infiltration associated with peripheral saphenous nerve block (SNB) vs intra-articular infiltration alone. METHODS: We performed a controlled, double-blinded, and randomized trial to evaluate postoperative pain in TKA. One group was treated with intra-articular analgesia associated with SNB, whereas a second group received the same intra-articular cocktail, associated with placebo. Efficacy was evaluated according to average pain, pain-free time, and morphine rescue indices. Safety was assessed by intervention complications and surgery. RESULTS: About 70 patients were recruited. At time 0 (immediately postoperative), 51.43% of the intra-articular analgesia + placebo group presented pain <3, whereas in the intra-articular analgesia + SNB group, 8.82% (P = .001) presented with pain. This difference was maintained at 6, 12, and 24 hours, postoperatively. After 24 hours, the placebo group received an average 0.66 morphine rescues (standard deviation, 0.86), when compared with the SNB group that received 0.14 rescues (standard deviation, 0.43), (P = .002). We recorded a paresis of the external popliteal sciatic nerve, with spontaneous recovery without other complications. CONCLUSION: Complementary SNB to intra-articular analgesia was more effective in reducing average pain and the amount of pain-free time in the first 24 hours after TKA, with fewer requests for morphine rescue analgesia.


Assuntos
Analgesia , Artroplastia do Joelho , Bloqueio Nervoso , Anestésicos Locais , Artroplastia do Joelho/efeitos adversos , Humanos , Morfina , Manejo da Dor , Dor Pós-Operatória/prevenção & controle , Estudos Prospectivos
10.
Arthroplast Today ; 5(3): 296-300, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31516969

RESUMO

Septic arthritis due to Listeria monocytogenes (LM) is extremely rare and most infections due to this organism are seen in immunocompromised patients. We describe a patient without immunological compromise, with a late total knee arthroplasty infection caused by LM treated with one-stage revision surgery. She had an elevated erythrocyte sedimentation rate (79 mm/h) and C-reactive protein (13 mg/dL). Aspiration of the knee joint yielded purulent fluid; cultures showed LM. The patient was given 6 weeks of intravenous ampicillin, followed by trimethoprim/sulfamethoxazole, and finally amoxicillin orally for 7 months. Two years after revision surgery, radiographs showed no evidence of implant loosening. This is a single case and although one-stage approach seemed to have worked, it should not be recommended on the basis of a single report.

15.
J Orthop Res ; 34(2): 314-9, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26177609

RESUMO

Femoral neck fractures in the elderly are a common problem in orthopedics. Augmentation of screw fixation with bone cement can provide better stability of implants and lower the risk of secondary displacement. This study aimed to investigate whether cement augmentation of three cannulated screws in non-displaced femoral neck fractures could increase implant fixation. A femoral neck fracture was simulated in six paired human cadaveric femora and stabilized with three 7.3 mm cannulated screws. Pairs were divided into two groups: conventional instrumentation versus additional cement augmentation of screw tips with 2 ml TraumacemV+ each. Biomechanical testing was performed by applying cyclic axial load until failure. Failure cycles, axial head displacement, screw angle changes, telescoping and screw cut-out were evaluated. Failure (15 mm actuator displacement) occurred in the augmented group at 12,500 cycles (± 2,480) compared to 15,625 cycles (± 4,215) in the non-augmented group (p = 0.041). When comparing 3 mm vertical displacement of the head no significant difference (p = 0.72) was detected between the survival curves of the two groups. At 8,500 load-cycles (early onset failure) the augmented group demonstrated a change in screw angle of 2.85° (± 0.84) compared to 1.15° (± 0.93) in the non-augmented group (p = 0.013). The results showed no biomechanical advantage with respect to secondary displacement following augmentation of three cannulated screws in a non-displaced femoral neck fracture. Consequently, the indication for cement augmentation to enhance implant anchorage in osteoporotic bone has to be considered carefully taking into account fracture type, implant selection and biomechanical surrounding.


Assuntos
Cimentos Ósseos/uso terapêutico , Fraturas do Colo Femoral/cirurgia , Fixação Interna de Fraturas/métodos , Idoso , Idoso de 80 Anos ou mais , Parafusos Ósseos , Feminino , Fixação Interna de Fraturas/instrumentação , Humanos , Masculino
16.
Artrosc. (B. Aires) ; 23(4): 136-140, 2016.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-834287

RESUMO

Introducción: Se han descripto numerosas clasificaciones de rupturas del manguito rotador. Ninguna de ellas ha logrado unificar conceptos acerca del tipo de lesión, pronóstico y tratamiento. El objetivo del siguiente trabajo es validar la reproductibilidad y fiabilidad de la clasificación propuesta por Davidson y Burkhart. Materiales y métodos: Corte transversal retrospectivo de la fiabilidad y reproductibilidad de la clasificación geométrica de rupturas del manguito rotador. Un total de 76 pacientes fueron analizados. Se incluyeron ruptura de espesor completo con rmn realizada en hospital italiano de buenos aires. Tres observadores con diferentes niveles de experiencia (residente, fellow y medico de planta) independientemente clasificaron los estudios en dos oportunidades con un intervalo de 4 semanas. Resultados: El acuerdo total inter-observador para los tres observadores fue 85.1% Con un valor de kappa de 0.951 (95% Ic: 0.94-0.97). El valor mas alto de fiabilidad fue alcanzado por el fellow con un valor de kappa de 0.875 (Ds ±0.047) Mientras que el score más bajo fue registrado por el residente con una puntuación de 0.815 (Sd ±0.56). De acuerdo a la guía de fleiss o de landis y koch todos los observadores alcanzaron excelente/casi perfecto acuerdo. Conclusión: La clasificación geométrica es comprensible y de fácil aplicación más allá del nivel de experiencia de los evaluadores. Se trata de una herramienta útil para comunicarse con excelentes resultados de fiabilidad y reproductibilidad intra e inter-observador.


Purpose: In 2010, James Davidson and Stephen Burkhart proposed the geometric classification of rotator cuff tears: a system linking tear pattern to treatment and prognosis. The objective of this study is to validate by measuring the intra-examiner and interexaminer reproducibility and reliability of the geometrical classification. Methods: This is a retrospective cross-sectional assessment of the reproducibility and reliability of a new rotator cuff tears classification. A total of 76 patients with full thickness rotator cuff tears on preoperative mri were analyzed. Three observers independently evaluated the mri according to the geometrical classification. The observers had different levels of experience and were represented by one resident, one medical fellow and one consultant of the arthroscopy and arthroplasty shoulder section. The mri’s were review by the observers in two occasions with 4 weeks interval to evaluate the intra-observer reliability. Results: The overall inter-observer agreement was 85.1% Representing a kappa value of 0.951 (95% Ci: 0.94-0.97). The highest inter-observer agreement was found between the resident and the consultant with 88.2% Producing a kappa value of 0.954 (95% Ci: 0.92-0.97). The highest average intra-observer reliability was achieved by the fellow with a kappa value of 0.875 (Sd ±0.047). The resident, fellow and consultant reached an excellent/almost perfect agreement. Conclusion: The geometrical classification is comprehensive and easy applicable despite the level of experience of the raters. It is suspect as a very useful tool to communicate among orthopedic surgeons with excellent inter and intra-observer reproducibility.


Assuntos
Humanos , Adulto , Articulação do Ombro/lesões , Manguito Rotador/lesões , Reprodutibilidade dos Testes , Ruptura/classificação , Estudos Retrospectivos , Variações Dependentes do Observador
17.
Rev. Asoc. Argent. Ortop. Traumatol ; 80(1): 20-29, mar. 2015.
Artigo em Espanhol | LILACS | ID: lil-754755

RESUMO

Introducción: El tratamiento quirúrgico de las fracturas toracolumbares es controvertido. La vía de abordaje y la cantidad de niveles de instrumentación son motivo de debate. El objetivo de este estudio fue analizar los resultados radiológicos y clínicos de pacientes con fracturas toracolumbares por estallido y flexión/distracción. Materiales y Métodos: Estudio retrospectivo de una serie consecutiva de pacientes tratados quirúrgicamente entre 2004 y 2008, con seguimiento >12 meses. Se incluyeron pacientes con instrumentación y artrodesis corta de los niveles adyacentes a la lesión, abordados por vía posterior. Se tomaron en cuenta fracturas de tipo A3 y B de la clasificación AO. Se llevaron a cabo evaluaciones clínica, neurológica y radiológica. Resultados: Se registraron 25 pacientes, 3 se perdieron en el seguimiento y 22 fueron analizados. El promedio de edad fue de 37 años. La causa más frecuente fue caída de altura, seguida de accidente vehicular. El nivel más afectado fue L1. El promedio de cifosis preoperatoria fue de 14° y de 4º en el posoperatorio alejado. En la evaluación clínica, 10 pacientes tuvieron un excelente resultado; 10, bueno y 2, regular. No hubo compromiso neurológico en 21 pacientes. Conclusiones: La instrumentación corta proporciona muy buenos resultados en la mayoría de los pacientes tanto a nivel radiológico como funcional. La selección de los pacientes debe ser estricta, se debe excluir a aquellos con cifosis grave, conminución importante u otro factor que haga pensar en la necesidad de un abordaje anterior. En el seguimiento alejado, no se observa una pérdida significativa de la reducción en la cifosis. Nivel de Evidencia: IV. Serie de Casos.


Background: Surgical treatment of thoracolumbar fractures is controversial. The approach and number of levels of instrumentation are debated. The aim of this study is to assess the clinical and radiological outcomes of burst fractures. Methods: Retrospective study. Consecutive series of patients treated with short instrumentation and posterior fusion between 2004 and 2008, with a minimum follow-up of 12 months. Type A3 and B fractures of AO classification were included. Clinical, neurological and radiological outcomes were analyzed. Results: Twenty-five patients were included and 22 completed the follow-up. The average of age was 37 years. The most common cause was fall from high, followed by road accident and the most affected region was L1. The average of kyphosis was 14° before surgery and 4° in the remote follow-up. Clinical evaluation was excellent in 10 patients, good in 10 and regular in 2. Twenty-one patients had no neurological compromise. Conclusions: Short instrumentation and posterior arthrodesis offer very good clinical and functional result in most patients. Patient selection must be strict, excluding those with severe kyphosis, significant comminution or other factor that would suggest the need for an anterior approach. Long-term follow-up did not show significant loose of kyphosis. Level of Evidence: IV. Case series.


Assuntos
Adulto , Fraturas da Coluna Vertebral/cirurgia , Fraturas da Coluna Vertebral , Fusão Vertebral/métodos , Vértebras Lombares/cirurgia , Vértebras Lombares/lesões , Vértebras Lombares , Vértebras Torácicas/cirurgia , Vértebras Torácicas/lesões , Vértebras Torácicas , Seguimentos , Estudos Retrospectivos
18.
Rev. Asoc. Argent. Ortop. Traumatol ; 80(1): 20-29, mar. 2015. ilus, graf, tab
Artigo em Espanhol | BINACIS | ID: bin-134061

RESUMO

Introducción: El tratamiento quirúrgico de las fracturas toracolumbares es controvertido. La vía de abordaje y la cantidad de niveles de instrumentación son motivo de debate. El objetivo de este estudio fue analizar los resultados radiológicos y clínicos de pacientes con fracturas toracolumbares por estallido y flexión/distracción. Materiales y Métodos: Estudio retrospectivo de una serie consecutiva de pacientes tratados quirúrgicamente entre 2004 y 2008, con seguimiento >12 meses. Se incluyeron pacientes con instrumentación y artrodesis corta de los niveles adyacentes a la lesión, abordados por vía posterior. Se tomaron en cuenta fracturas de tipo A3 y B de la clasificación AO. Se llevaron a cabo evaluaciones clínica, neurológica y radiológica. Resultados: Se registraron 25 pacientes, 3 se perdieron en el seguimiento y 22 fueron analizados. El promedio de edad fue de 37 años. La causa más frecuente fue caída de altura, seguida de accidente vehicular. El nivel más afectado fue L1. El promedio de cifosis preoperatoria fue de 14° y de 4º en el posoperatorio alejado. En la evaluación clínica, 10 pacientes tuvieron un excelente resultado; 10, bueno y 2, regular. No hubo compromiso neurológico en 21 pacientes. Conclusiones: La instrumentación corta proporciona muy buenos resultados en la mayoría de los pacientes tanto a nivel radiológico como funcional. La selección de los pacientes debe ser estricta, se debe excluir a aquellos con cifosis grave, conminución importante u otro factor que haga pensar en la necesidad de un abordaje anterior. En el seguimiento alejado, no se observa una pérdida significativa de la reducción en la cifosis.(AU)


Background: Surgical treatment of thoracolumbar fractures is controversial. The approach and number of levels of instrumentation are debated. The aim of this study is to assess the clinical and radiological outcomes of burst fractures. Methods: Retrospective study. Consecutive series of patients treated with short instrumentation and posterior fusion between 2004 and 2008, with a minimum follow-up of 12 months. Type A3 and B fractures of AO classification were included. Clinical, neurological and radiological outcomes were analyzed. Results: Twenty-five patients were included and 22 completed the follow-up. The average of age was 37 years. The most common cause was fall from high, followed by road accident and the most affected region was L1. The average of kyphosis was 14° before surgery and 4° in the remote follow-up. Clinical evaluation was excellent in 10 patients, good in 10 and regular in 2. Twenty-one patients had no neurological compromise. Conclusions: Short instrumentation and posterior arthrodesis offer very good clinical and functional result in most patients. Patient selection must be strict, excluding those with severe kyphosis, significant comminution or other factor that would suggest the need for an anterior approach. Long-term follow-up did not show significant loose of kyphosis.(AU)

19.
Artigo em Espanhol | BINACIS | ID: bin-134042

RESUMO

Introducción: El tratamiento quirúrgico de las fracturas toracolumbares es controvertido. La vía de abordaje y la cantidad de niveles de instrumentación son motivo de debate. El objetivo de este estudio fue analizar los resultados radiológicos y clínicos de pacientes con fracturas toracolumbares por estallido y flexión/distracción. Materiales y Métodos: Estudio retrospectivo de una serie consecutiva de pacientes tratados quirúrgicamente entre 2004 y 2008, con seguimiento >12 meses. Se incluyeron pacientes con instrumentación y artrodesis corta de los niveles adyacentes a la lesión, abordados por vía posterior. Se tomaron en cuenta fracturas de tipo A3 y B de la clasificación AO. Se llevaron a cabo evaluaciones clínica, neurológica y radiológica. Resultados: Se registraron 25 pacientes, 3 se perdieron en el seguimiento y 22 fueron analizados. El promedio de edad fue de 37 años. La causa más frecuente fue caída de altura, seguida de accidente vehicular. El nivel más afectado fue L1. El promedio de cifosis preoperatoria fue de 14° y de 4º en el posoperatorio alejado. En la evaluación clínica, 10 pacientes tuvieron un excelente resultado; 10, bueno y 2, regular. No hubo compromiso neurológico en 21 pacientes. Conclusiones: La instrumentación corta proporciona muy buenos resultados en la mayoría de los pacientes tanto a nivel radiológico como funcional. La selección de los pacientes debe ser estricta, se debe excluir a aquellos con cifosis grave, conminución importante u otro factor que haga pensar en la necesidad de un abordaje anterior. En el seguimiento alejado, no se observa una pérdida significativa de la reducción en la cifosis. Nivel de Evidencia: IV. Serie de Casos.(AU)


Background: Surgical treatment of thoracolumbar fractures is controversial. The approach and number of levels of instrumentation are debated. The aim of this study is to assess the clinical and radiological outcomes of burst fractures. Methods: Retrospective study. Consecutive series of patients treated with short instrumentation and posterior fusion between 2004 and 2008, with a minimum follow-up of 12 months. Type A3 and B fractures of AO classification were included. Clinical, neurological and radiological outcomes were analyzed. Results: Twenty-five patients were included and 22 completed the follow-up. The average of age was 37 years. The most common cause was fall from high, followed by road accident and the most affected region was L1. The average of kyphosis was 14° before surgery and 4° in the remote follow-up. Clinical evaluation was excellent in 10 patients, good in 10 and regular in 2. Twenty-one patients had no neurological compromise. Conclusions: Short instrumentation and posterior arthrodesis offer very good clinical and functional result in most patients. Patient selection must be strict, excluding those with severe kyphosis, significant comminution or other factor that would suggest the need for an anterior approach. Long-term follow-up did not show significant loose of kyphosis. Level of Evidence: IV. Case series.(AU)


Assuntos
Adulto , Fraturas da Coluna Vertebral/cirurgia , Fraturas da Coluna Vertebral/diagnóstico por imagem , Vértebras Lombares/cirurgia , Vértebras Lombares/lesões , Vértebras Lombares/diagnóstico por imagem , Vértebras Torácicas/cirurgia , Vértebras Torácicas/lesões , Vértebras Torácicas/diagnóstico por imagem , Fusão Vertebral/métodos , Estudos Retrospectivos , Seguimentos
20.
J Orthop Trauma ; 28(5): 294-9, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24296600

RESUMO

OBJECTIVES: The incidence of osteoporotic proximal tibial fractures has increased during the last 2 decades. A promising approach in osteoporotic fracture fixation is polymethylmethacrylate-based cement augmentation of implants to gain better implant purchase in the bone. This study investigates the biomechanical benefits of screw augmentation in less invasive stabilization system-proximal lateral tibial (LISS-PLT) plates in cadaveric extraarticular comminuted proximal tibial fractures (OTA-41-A3.3). METHODS: Standardized extraarticular proximal tibial fractures were stabilized with the LISS-PLT plate in 6 paired osteoporotic cadaveric tibiae. Bone mineral density was measured with high-resolution, quantitative computed tomography scans to identify bone quality. In the augmented group, the 5 proximal screws of the LISS-PLT plate were augmented with 1 mL of bone cement each, whereas the contralateral tibia was instrumented conventionally as the control. Cyclic axial loading was applied to each specimen with a starting load of 150 N, using a ramp of 0.05 N per cycle to 10-mm axial displacement. Varus displacement was identified from anterior-posterior radiographs. RESULTS: Bone mineral density showed no significant difference between the 2 groups (P = 0.47). The nonaugmented group reached 9417 load cycles (SD 753) until failure, compared with 14,792 load cycles (SD 2088) in the augmented group (P = 0.002). In the early-onset failure (deformation at 8250 load cycles), varus displacement was significantly smaller in the augmented group (0.46 degrees, SD 0.6) than in the nonaugmented group (3.23 degrees, SD 1.7) (P = 0.01). CONCLUSIONS: This biomechanical study showed that cement augmentation of the LISS-PLT plate screws in osteoporotic proximal extraarticular tibial fractures significantly lowers the propensity toward screw migration and secondary varus displacement.


Assuntos
Cimentos Ósseos/uso terapêutico , Fraturas por Osteoporose/cirurgia , Polimetil Metacrilato/uso terapêutico , Fraturas da Tíbia/cirurgia , Idoso , Idoso de 80 Anos ou mais , Fenômenos Biomecânicos , Mau Alinhamento Ósseo/prevenção & controle , Placas Ósseas , Parafusos Ósseos/efeitos adversos , Cadáver , Fixação de Fratura/métodos , Humanos , Fraturas por Osteoporose/fisiopatologia , Falha de Prótese , Fraturas da Tíbia/fisiopatologia , Resultado do Tratamento
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