Análisis de las características demográficas de 94 pacientes con fracturas articulares de calcáneo / Analysis of demographic characteristics in a series of 94 patients with articular calcaneal fractures

Objetivo: Analizar las características demográficas de los pacientes con fracturas articulares de calcáneo en relación con el mecanismo del trauma y los patrones fracturarios según las clasificaciones de Sanders y Essex-Lopresti. materiales y métodos: Se evaluó retrospectivamente a 94 pacientes (111 fracturas articulares de calcáneo). Se analizaron las siguientes variables: edad, sexo, lado fracturado, mecanismo del trauma y lesiones asociadas. Al ingresar, se tomaron radiografías de pie, de frente y perfil, y se realizó una tomografía computarizada con reconstrucción multiplanar. Se analizaron los datos demográficos combinándolos con los tipos de fracturas. Resultados: Se evaluó a 94 pacientes (78 hombres y 16 mujeres) que tenían 105 fracturas intrarticulares de calcáneo (11,7% bilaterales). La edad promedio era de 40.1 ± 12.5 años. El 79,8% de las fracturas se había producido por caída de altura y el 20,1%, por accidente de tránsito. El 9,5% tenía lesiones asociadas. Los pacientes con fracturas bilaterales tenían más lesiones asociadas (p = 0,0123) y el mismo patrón fracturario y tipo de Sanders en ambos pies. No hubo relación entre la clasificación de Sanders y los patrones de Essex-Lopresti con la edad, el sexo y el mecanismo del trauma. Conclusiones: Las fracturas de calcáneo son más frecuentes en hombres y en pacientes jóvenes, y el mecanismo del trauma más común es una caída de altura. Los pacientes con fracturas bilaterales tienen una tasa más alta de lesiones asociadas y el mismo tipo de fractura según la clasificación de Sanders y el patrón fracturario de Essex-Lopresti en ambos pies. Nivel de Evidencia: IV

Objective: To analyze the demographic characteristics of patients with articular calcaneal fractures in connection with trauma mechanisms and fracture patterns, according to the Sanders and Essex-Lopresti classifications. materials and methods: 94 patients and 111 articular calcaneal fractures were evaluated retrospectively, analyzing the following variables: age, gender, fractured side, mechanism of trauma, and associated injuries. The patients were initially evaluated through foot radiographs (anteroposterior and lateral) and axial computerized tomography with multiplanar reconstruction. Demographic data were analyzed combined with the types of fracture. Results: 94 patients (78 men and 16 women) who presented 105 intra-articular calcaneal fractures (11.7% were bilateral) were evaluated. The average age was 40.1±12.5 years. 9.8% of the fractures were caused by high-level falls and 20.1% by traffic accidents. 9.5% had associated injuries. The patients with bilateral fractures presented more associated injuries (p = 0.0123) and the same fracture pattern and Sanders type in both feet. The Sanders classification and Essex Lopresti patterns were unrelated to age, gender, and trauma mechanism. Conclusion: Calcaneal fractures are more frequent in male and young patients, and the most common trauma mechanism is a high-level fall. Patients with bilateral fractures present a higher rate of associated injuries and the same Sanders type fracture and Essex-Lopresti pattern in both feet. Level of Evidence: IV

Isolated open tibial shaft fracture: a seven-hospital, prospective observational study in two Latin America countries.

INTRODUCTION: open tibial fractures are challenging due to the frequent severe bone injury associated with poor soft tissue conditions. This is relevant in low- and middle-income countries, mainly related to delayed definitive fixation and lack of adequate training in soft tissue coverage procedures. Due to these factors, open tibial fracture is an important source of disability for Latin American countries. Herein we sought to provide an epidemiological overview of isolated open tibial shaft fracture across seven hospitals in southern cone of Latin America. The secondary goal was to assess the impact on quality of life based on return-to-work rate (RWR). METHODS: patients with an isolated open tibial shaft fracture treated in seven different hospitals from Brazil and Argentina from November 2017 to March 2020 were included in the study. Clinical and radiographic results were evaluated throughout the 120-day follow-up period. Final evaluation compared RWR with the SF-12 questionnaire, bone healing, and gait status. RESULTS: Seventy-two patients were treated, 57 followed for 120 days and 48 completed the SF-12 questionnaire. After 120 days, 70.6% had returned to work, 61.4% had experienced bone healing. Age, antibiotic therapy, type of definitive treatment, and infection significantly influenced the RWR. Gait status exhibited strong correlations with RWR and SF-12 physical component score. CONCLUSIONS: Isolated open tibial shaft fractures are potentially harmful to the patient's quality of life after 120 days of the initial management. RWR is significantly higher for younger patients, no history of infection, and those who could run in the gait status assessment.

Resección de osteoma osteoide vertebral asistida por planificación 3D. Presentación de un caso / Resection of spinal osteoid osteoma assisted by 3D planning. Case report

La localización vertebral de una lesión compatible con un osteoma osteoide requiere, muchas veces, su resección en bloque mar-ginal mediante cirugía. El objetivo de este artículo es informar sobre el uso de la tecnología en impresión 3D para desarrollar guías de corte y así lograr una resección segura y completa de un osteoma osteoide de L1. Presentamos a un varón de 13 años, operado de un osteoma osteoide de L1 y detallamos la planificación preoperatoria con asistencia de la tecnología 3D, la técnica quirúrgica mediante guías de corte impresas y un modelo real de la columna lumbar y el control posoperatorio. Conclusiones: Ante la indicación de cirugía para una lesión compatible con osteoma osteoide en la columna debe decidirse entre la posibilidad de resección intralesional abierta o percutánea y la resección marginal en bloque. Para localizar la lesión durante la cirugía, se utilizan diferentes métodos. En nuestro Servicio, estamos utilizando la tecnología 3D para la planificación preoperatoria de múltiples enfermedades traumatológicas agudas y las secuelas. Esto nos permite una mayor precisión y seguridad en la identificación de los márgenes de resección intraoperatoria, reduciendo, al mínimo, la extracción de tejidos sanos y evitando la inestabilidad posoperatoria. Nivel de Evidencia: IV

The vertebral location of a lesion compatible with an osteoid osteoma often requires a marginal en bloc resection. Our objective is to present the use of 3D printing technology for the development of specific cutting guides that achieve a safe and complete resection of an L1 osteoid osteoma. We present the case of a 13-year-old male who underwent surgery for an L1 osteoid osteoma, de-tailing the preoperative planning assisted by 3D technology, the surgical technique using 3D printed cutting guides, a real model of the lumbar spine, and the postoperative control. Conclusion: Before the surgical indication of a lesion compatible with an osteoid osteoma in the spine, we must decide between the possibility of an open intralesional resection or percutaneous and marginal en bloc resection. Different methods can be used for the intraoperative location of the lesion. In our department, we use 3D technology for preoperative planning of multiple acute and post-traumatic pathologies. This allows us to be precise and safe in the identification of intraoperative resection margins, minimizing the removal of healthy tissues and avoiding postoperative instability. Level of Evidence: IV

Isolated open tibial shaft fracture: a seven-hospital, prospective observational study in two Latin America countries / Fraturas expostas isoladas da diáfise da tíbia: estudo prospectivo observacional em sete hospitais de dois países da América Latina

ABSTRACT Introduction: open tibial fractures are challenging due to the frequent severe bone injury associated with poor soft tissue conditions. This is relevant in low- and middle-income countries, mainly related to delayed definitive fixation and lack of adequate training in soft tissue coverage procedures. Due to these factors, open tibial fracture is an important source of disability for Latin American countries. Herein we sought to provide an epidemiological overview of isolated open tibial shaft fracture across seven hospitals in southern cone of Latin America. The secondary goal was to assess the impact on quality of life based on return-to-work rate (RWR). Methods: patients with an isolated open tibial shaft fracture treated in seven different hospitals from Brazil and Argentina from November 2017 to March 2020 were included in the study. Clinical and radiographic results were evaluated throughout the 120-day follow-up period. Final evaluation compared RWR with the SF-12 questionnaire, bone healing, and gait status. Results: Seventy-two patients were treated, 57 followed for 120 days and 48 completed the SF-12 questionnaire. After 120 days, 70.6% had returned to work, 61.4% had experienced bone healing. Age, antibiotic therapy, type of definitive treatment, and infection significantly influenced the RWR. Gait status exhibited strong correlations with RWR and SF-12 physical component score. Conclusions: Isolated open tibial shaft fractures are potentially harmful to the patient's quality of life after 120 days of the initial management. RWR is significantly higher for younger patients, no history of infection, and those who could run in the gait status assessment.

RESUMO Introdução: o tratamento de fraturas expostas isoladas da diáfise da tíbia (FEIDT) apresenta desafios por frequentemente associar severa lesão óssea com condições ruins de tecido mole, fatores relevantes em países de média e baixa renda, especialmente devido a atrasos na implementação da fixação definitiva e falta de treinamento adequado no manejo de tecidos moles. Consequentemente, FEIDTs representam importante fonte de incapacitação na América Latina. Este estudo objetivou apresentar uma visão geral das FEIDTs em sete hospitais do cone sul da América Latina. O objetivo secundário foi avaliar o seu impacto na qualidade de vida baseado na taxa de retorno ao trabalho (TRT). Métodos: foram incluídos no estudo pacientes com FEIDT tratados em sete hospitais de Brasil e Argentina entre novembro de 2017 e março de 2020. Resultados clínicos e radiográficos foram analisados num período de 120 dias. Avaliação final comparou TRT com o questionário SF-12, consolidação óssea e condições de marcha. Resultados: setenta e dois pacientes foram tratados, 57 seguidos por 120 dias e 48 completaram o questionário SF-12. Após 120 dias, 70,6% havia retornado ao trabalho, 61,4% tinha fratura consolidada. Idade, antibioticoterapia, tipo de tratamento definitivo e infecção influenciaram significativamente na TRT. A condição de marcha apresentou forte correlação com TRT e o componente físico do SF-12. Conclusão: FEIDTs são potencialmente deletérias à qualidade de vida dos pacientes 120 dias após o tratamento inicial. TRT é significativamente maior para pacientes mais jovens, sem história de infecção e que conseguem correr na avaliação da condição de marcha..

Luxofracturas radiocarpianas: evaluación retrospectiva de una serie de casos / Radiocarpal fracture-dislocation. Retrospective evaluation of a case series

Introducción: Las luxofracturas radiocarpianas consisten en la pérdida total de contacto entre las superficies articulares de la primera fila del carpo y del radio. Se producen por traumatismos de alta energía. El objetivo de este estudio fue evaluar retrospectivamente una serie de casos para comparar la incidencia de estas lesiones, el manejo terapéutico y los resultados funcionales con la bibliografía publicada por centros de referencia en esta enfermedad. Materiales y métodos: Entre febrero de 2018 y junio de 2020, se evaluó, en forma retrospectiva, a pacientes con luxofractura radiocarpiana, clasificada en tipos I y II según Dumontier. Criterios de inclusión: hombres y mujeres >18 años con luxofractura radiocarpiana cerrada o abierta y un seguimiento mínimo de 3 meses. Se llevó a cabo un seguimiento clínico/por imágenes mediante radiografías, el cuestionario DASH, la escala de muñeca modificada de la Clínica Mayo, la escala analógica visual para dolor y el PSQ-18. Resultados: Se evaluó a 8 pacientes con 9 lesiones, y un seguimiento promedio de 8 meses. Las luxaciones eran 4 tipo I y 5 tipo II. Todos fueron operados. Según valores finales, hubo 2 resultados excelentes, 6 buenos/aceptables y uno pobre. Conclusión: El mejor método para el tratamiento definitivo es quirúrgico. La correcta clasificación y el estudio de la enfermedad tienen un rol fundamental en la toma de decisiones terapéuticas. Nivel de Evidencia: IV

Introduction: Radiocarpal fracture-dislocations consist of the total loss of contact between the articular surfaces of the first row of the carpus and the radius. They are caused by high-energy trauma. The purpose of the work is to retrospectively evaluate a series of cases to compare the incidence of these lesions, their therapeutic management and functional outcomes with the literature published by reference centers in this pathology. Materials and methods: Between February 2018 and June 2020 we retrospectively evaluated patients with radiocarpal fracture-dislocations, which were classified into groups I and II according to Dumontier. Inclusion criteria: males and females over 18 years of age with closed or open radiocarpal fracture-dislocations with a minimum follow-up of 3 months. A clinical/imaging follow-up was carried out using radiographs, the DASH questionnaire (Disabilities of the Arm, Shoulder and Hand), Modified Mayo Wrist Score, visual analog scale (VAS) and Patient Satisfaction Questionnaire Short Form (PSQ-18). Results: Eight patients with nine lesions with an average follow-up of 8 months were evaluated. Lesions were grouped into type I (4) and type II (5). All were surgically operated. According to the final values, outcomes were excellent in two cases, good/acceptable in six, and poor in one. Conclusion: We believe that the best method for definitive treatment is surgical. The correct classification and study of the pathology will play a fundamental role in making therapeutic decisions. Level of Evidence: IV

Evaluación de la estabilización de fracturas expuestas de pierna grados I y II de Gustillo en la etapa aguda / Analysis of the stabilization of Gustillo grade I and II open tibia fractures in the acute stage

Introducción: La fijación interna de las fracturas de pierna expuestas en la etapa aguda, es decir, dentro de las 24 h del trauma es un tema controvertido. El objetivo de este estudio fue evaluar las infecciones asociadas a la colocación de clavos endomedulares en la etapa aguda y a la colocación diferida, en la fijación de fracturas expuestas de pierna grados I y II de Gustilo. materiales y métodos: Se realizó un estudio de cohorte retrospectivo sobre el tratamiento en la etapa aguda de los pacientes que ingresaron en el hospital con fracturas expuestas de pierna entre 2015 y 2018. Se analizó la tasa de infecciones durante los primeros 6 meses después de la cirugía y se comparó la fijación en la etapa aguda con la fijación diferida. Resultados: La fijación interna con clavos endomedulares en la etapa aguda, en pacientes con fracturas expuestas de pierna no aumentó, sino que disminuyó la tasa de infecciones en el control posoperatorio. Conclusión: El estudio avala la colocación de clavos endomedulares en la etapa aguda, en pacientes con fractura de tibia expuestas. Nivel de Evidencia: II

Introduction: The internal fixation of leg fractures exposed in acute, that is, within 24 hours of trauma is quite controversial. The objective of this work is to assess infections associated with acute intramedullary nailing fixation ­versus deferred fixation­ of Gustilo type I and II open fractures. Patients and Methods: A retrospective cohort study was conducted of the acute treatment of patients with open leg fractures admitted to the hospital between 2015 and 2018. The infection rate was analyzed during the first 6 postoperative months after intramedullary nailing, and acute fixation patients were compared against deferred fixation patients. Results: Acute internal fixation with intramedullary nail in patients with open leg fractures does not increase, but decreases, the infection rate in the postoperative control. Conclusion: The study supports acute intramedullary nailing in patients with open tibial fractures. Level of Evidence: II

Astragalectomía. Evaluaciones funcional y radiográfica / Talectomy. Functional and radiological evaluation

Analizar las indicaciones de la astragalectomía y evaluar sus resultados radiográficos y funcionales en cuatro pacientes. Materiales y Métodos: Se evaluaron los resultados funcionales (puntaje de la AOFAS) y radiológicos de cinco astragalectomías en cuatro pacientes con diferentes etiologías: Casos 1 y 4, osteonecrosis infectada secundaria a fracturas expuestas de astrágalo; Caso 2, osteonecrosis asociada a equino varo y retropié rígido, secuela de fractura expuesta grave de tibia; y Caso 3, equino varo y retropié rígido neurológico bilateral. Todos los pacientes eran hombres, con una edad promedio de 32.5 años (rango 19-56). Se utilizaron los siguientes procedimientos: abordaje anteroexterno en pie y tobillo, astragalectomía y fijación en posición de corrección con dos clavos de Steinmann de 3 mm, tenotomía del Aquiles u otros, según necesidad. Resultados: Seguimiento de 38 meses (rango 15-84), sin signos de osteoartrosis, o signos leves y sin dolor. Puntaje de la AOFAS 81,4 (puntaje prequirúrgico 17), una discrepancia de longitud del miembro <2 cm y un rango de flexo-extensión de 18° en promedio (variancia entre 10° y 45°). Dos varos leves del retropié y tres alineaciones neutras asintomáticos. Conclusiones: Se observa una buena correlación entre la sintomatología de los pacientes, la alineación adecuada y los escasos signos por imágenes de artrosis tibiocalcánea o en el resto del pie. Si es imposible realizar la técnica de artrodesis o artroplastia de tobillo, la astragalectomía es un método de rescate para pacientes con deformidades muy graves o déficit de stock óseo e infecciones recalcitrantes de la articulación del tobillo. Nivel de Evidencia: IV...

Objectives: To analyze the indications for talectomy and evaluate the radiographic and functional results in four patients. Methods: Functional (AOFAS score) and radiological (X-rays and MR) of five talectomies in four patients with different etiologies: Cases 1 and 4, septic osteonecrosis secondary to open fractures of the talus; Case 2, osteonecrosis associated with rigid equinovarus hindfoot, sequelae of severe open tibia fracture, and Case 3, neurological rigid equinovarus hindfoot, bilateral. All patients were men, with an average age of 32.5 years (range 19-56). We performed the following procedures as needed: anterolateral approach for the foot and ankle, talectomy and fixation in corrected position with two 3 mm Steinmann’s pins, Achilles tenotomy or others.Results: At 38-month follow-up (range 15-84) there were no signs of osteoarthritis, or mild signs and absence of pain. AOFAS score of 81.4 points (preoperative score 17), a length discrepancy of lower limb <2 cm, and a range of flexion and extension of 18° on average (variance between 10° and 45°). Two mild varus hindfoot and three asymptomatic and neutral alignments. Conclusions: There is a good correlation among the patient’s symptoms, proper alignment and few imaging signs of osteoarthritis in the ankle or other joints in the foot. If treatmet with an arthrodesis or an ankle replacement is not possible, the talectomy is an acceptable salvage procedure for patients with severe deformities, bone stock deficiency and recalcitrant infections in the ankle. Level of Evidence: IV...

Efficacy of a tool combining guide-wire and stylet for the left ventricular lead positioning.

AIMS: The left ventricular (LV) lead for cardiac resynchronization therapy (CRT) is usually positioned in the coronary sinus via a stylet-guided or an 'over-the-wire' approach. Recently, a new tool has been developed, the Medtronic Attain Hybrid, that combines guide-wire and stylet features. We assessed its safety and efficacy in comparison with standard tools currently used in clinical practice. METHODS AND RESULTS: Patients undergoing standard CRT device implantation were enrolled in seven Italian centres. In the preliminary phase of the study (Phase I), data were collected during implantation procedures performed with standard tools (three patients per centre). Subsequently, the Attain Hybrid was made available in the centres and data were collected for all consecutive patients undergoing implantation during the following year. A learning phase was considered (Phase II), and the last three patients per centre (Phase III) were used for comparison with Phase I. One hundred and seventeen patients were enrolled: 21 patients in Phase I, 75 in Phase II, and 21 in Phase III. Rates of successful implantation were similar in Phases I and III (95 vs. 100%, P=1.000). The pre-defined target vein was reached in 15 (71%) patients in Phase I and in 21 (100%) patients in Phase III (P=0.021). In 10 (48%) procedures during Phase I, LV lead positioning necessitated switching from guide-wire to stylet; this proportion decreased during Phase III (14%, P=0.043). Mean LV positioning time was 16±7 min in Phase I and 11±6 min in Phase III (P=0.040). No adverse events or lead-related complications were detected on implantation or during a follow-up of 6±4 months. CONCLUSION: The Attain Hybrid is safe and effective. It significantly improves target vein accessibility and reduces procedural time in comparison with conventional tools.

A simplified biventricular defibrillator with fixed long detection intervals reduces implantable cardioverter defibrillator (ICD) interventions and heart failure hospitalizations in patients with non-ischaemic cardiomyopathy implanted for primary prevention: the RELEVANT [Role of long dEtection window programming in patients with LEft VentriculAr dysfunction, Non-ischemic eTiology in primary prevention treated with a biventricular ICD] study.

AIMS: To investigate the efficacy and safety of a cardiac resynchronization therapy with cardioverter-defibrillator (CRT-D) device with simplified ventricular tachycardia management in patients with non-ischaemic heart failure (HF) and primary prevention implantable cardioverter defibrillator (ICD) indication. METHODS AND RESULTS: Prospective, controlled, parallel, multicentre, non-randomized study enrolling 324 primary prevention non-ischaemic HF patients implanted with CRT-D devices from 2004 to 2007: Protect group, 164 patients implanted with a Medtronic Insync III Protect device and Control group, 160 patients utilizing other Medtronic CRT-D devices. Efficacy was assessed by computing appropriate and inappropriate detections and therapies during follow-up; safety compared hospitalizations and syncopal events between groups. Ninety per cent of both ventricular and supraventricular tachyarrhythmias terminated within the 13-29 beat detection interval with the Protect algorithm. The Protect group showed a significantly better event-free survival to first delivered therapy for total (P = 0.0001), appropriately treated (P = 0.002), and inappropriately treated episodes (P = 0.017). The total number of delivered shocks was significantly lower in the Protect group (22 vs. 59, P < 0.0001). In the Protect group, a significantly reduced HF hospitalization (hazard ratio 0.38, 95% CI 0.15-0.98, P = 0.044) was observed without any increase of syncope or death. CONCLUSION: A simplified CRT-D device with fixed long detection reduced overall ICD therapy burden and HF hospitalizations without entailing any additional adverse events in primary prevention non-ischaemic HF patients.

Results of the SCART study: selection of candidates for cardiac resynchronisation therapy.

OBJECTIVE: To prospectively determine whether prespecified electrocardiographic, echocardiographic and tissue Doppler imaging (TDI) selection criteria may predict a positive response to cardiac resynchronisation therapy (CRT). METHODS: In this multicentre, prospective, non-randomised study, 96 heart failure patients with New York Heart Association class III-IV symptoms, an ejection fraction of < or =35%, and at least one marker of ventricular dyssynchrony according to prespecified electrocardiographic, echocardiographic or TDI criteria were enrolled. The primary endpoint was an improvement in the clinical composite score at 6 months. RESULTS: At enrolment, 70 patients fulfilled the electrocardiographic criterion (QRS duration > or =150 ms), 77 patients showed echocardiographic signs of dyssynchrony, and 37 patients met the TDI dyssynchrony criteria. The overall responder rate was 78/96 (81%). In particular, the primary endpoint was reached in 68 patients who fulfilled the echocardiographic criteria as compared with 10 patients who did not (88 vs. 53%, P = 0.001). The patients who met the echocardiographic criteria showed a significant greater reduction in left ventricular end-systolic diameter (P = 0.029) and a higher improvement in quality of life (P = 0.017) than patients who did not. Neither electrocardiographic nor TDI criteria seemed to predict a positive response to CRT. CONCLUSIONS: In our patient population, mechanical indexes of dyssynchrony as assessed by echocardiography appeared to identify CRT responders. Although TDI is useful for evaluating ventricular dyssynchrony after CRT, the prespecified TDI inclusion criteria adopted in this investigation did not increase the number of CRT responders.

Seudoartrosis con perdida osea de femur y de tibia / Femoral and tibial pseudarthrosis with bone loss

Introduccion: El objetivo del siguiente trabajo es evaluar los resultados anatomicos y funcionales de las técnicas de osteogenesis por distraccion para la reconstruccion de defectos oseos segmentarios de femur y de tibia. Materiales y metodos: Se evaluaron retrospectivamente 24 pacientes con seudoartrosis con perdida osea de femur y tibia. Las causas fueron la perdida de fragmentos durante la lesión aguda en el 34 por ciento de los casos y la reseccion de hueso osteomielítico o necrótico en el 66 por ciento. Los pacientes se encuadraron de acuerdo con el tipo B de la clasificacion de Paley y cols. En las seudoartrosis con defecto y sin acortamiento (B1) se realizo transporte oseo, en las que tenian acortamiento (B2) se elongo a nivel metafisario y en las lesiones con defecto y acortamiento (B3) se transporto un fragmento oseo y al llegar al sitio del docking se continuo elongando hasta corregir la dismetria. Resultados: La curacion se logro en un tiempo promedio de 13 meses con resultados satisfactorios en el 83 por ciento de los casos. Se produjeron cinco complicaciones mayores: una dismetria de 2,5 cm, dos deformidades angulares mayores de 10º, una seudoartrosis del docking y una rigidez de rodilla. El resto fueron complicaciones menores que no influyeron en el resultado final. Conclusiones: Se concluye que la osteogenesis en distraccion genera resultados satisfactorios tanto oseos como funcio

Seudoartrosis con perdida osea de femur y de tibia / Femoral and tibial pseudarthrosis with bone loss

Introduccion: El objetivo del siguiente trabajo es evaluar los resultados anatomicos y funcionales de las técnicas de osteogenesis por distraccion para la reconstruccion de defectos oseos segmentarios de femur y de tibia. Materiales y metodos: Se evaluaron retrospectivamente 24 pacientes con seudoartrosis con perdida osea de femur y tibia. Las causas fueron la perdida de fragmentos durante la lesión aguda en el 34 por ciento de los casos y la reseccion de hueso osteomielítico o necrótico en el 66 por ciento. Los pacientes se encuadraron de acuerdo con el tipo B de la clasificacion de Paley y cols. En las seudoartrosis con defecto y sin acortamiento (B1) se realizo transporte oseo, en las que tenian acortamiento (B2) se elongo a nivel metafisario y en las lesiones con defecto y acortamiento (B3) se transporto un fragmento oseo y al llegar al sitio del docking se continuo elongando hasta corregir la dismetria. Resultados: La curacion se logro en un tiempo promedio de 13 meses con resultados satisfactorios en el 83 por ciento de los casos. Se produjeron cinco complicaciones mayores: una dismetria de 2,5 cm, dos deformidades angulares mayores de 10º, una seudoartrosis del docking y una rigidez de rodilla. El resto fueron complicaciones menores que no influyeron en el resultado final. Conclusiones: Se concluye que la osteogenesis en distraccion genera resultados satisfactorios tanto oseos como funcionales en seudoartrosis de femur y tibia con perdida osea

Estudio de la asociacion de condromalacia patelar en las lesiones meniscales y del ligamento cruzado anterior / Patellar chondromalacia associated with meniscal and LCA injuries

Entre junio de 1997 y marzo de 2000 se estudiaron en conjunto con el servicio de diagnostico medico Rosario, 1084 pacientes que presentaban rodillas dolorosas agrupadas en patologias inflamatorias, degenerativas, traumaticas, tumorales, ligamentarias. Los pacientes fueron evaluados siempre por el mismo cuerpo medico de radiologos y protocolos de RMI. Se estudio prevalencia segun edad y sexo. Confeccionamos una planilla de estudio con 4 campos a evaluar (menisco interno, menisco externo, ligamento cruzado anterior y un ultimo campo de lo denominamos observaciones, incluyendo en este, diversos hallazgos patologicos. De los diversos hallazgos patologicos, comprobamos que existia un predominio de condromalacia patelar en pacientes mayores de 55 años, con sobrepeso corporal, alteracin del angulo Q y altura de la patela. Otras lesiones secundarias que encontramos de jerarquia fueron: contusiones femorotibiales, displasia femoropatelar, quistes de Baker, sinovitis de Hoffa, osteocondritis, fracturas ocultas de platillo tibial, plicas sinoviales, gangliones, osteonecrosis, encondromas, edema de partes blandas periarticulares

Estudio de la asociacion de condromalacia patelar en las lesiones meniscales y del ligamento cruzado anterior / Patellar chondromalacia associated with meniscal and LCA injuries

Entre junio de 1997 y marzo de 2000 se estudiaron en conjunto con el servicio de diagnostico medico Rosario, 1084 pacientes que presentaban rodillas dolorosas agrupadas en patologias inflamatorias, degenerativas, traumaticas, tumorales, ligamentarias. Los pacientes fueron evaluados siempre por el mismo cuerpo medico de radiologos y protocolos de RMI. Se estudio prevalencia segun edad y sexo. Confeccionamos una planilla de estudio con 4 campos a evaluar (menisco interno, menisco externo, ligamento cruzado anterior y un ultimo campo de lo denominamos observaciones, incluyendo en este, diversos hallazgos patologicos. De los diversos hallazgos patologicos, comprobamos que existia un predominio de condromalacia patelar en pacientes mayores de 55 años, con sobrepeso corporal, alteracin del angulo Q y altura de la patela. Otras lesiones secundarias que encontramos de jerarquia fueron: contusiones femorotibiales, displasia femoropatelar, quistes de Baker, sinovitis de Hoffa, osteocondritis, fracturas ocultas de platillo tibial, plicas sinoviales, gangliones, osteonecrosis, encondromas, edema de partes blandas periarticulares