Alargamiento óseo con clavo intramedular magnético experiencia preliminar y lecciones aprendidas / Bone lengthening with magnetic intramedullary nail preliminary experience and learned lessons

OBJETIVOS: Mostrar resultados, complicaciones y lecciones aprendidas utilizando el clavo intramedular magnético (IML, Intramedullary Magnetic Lengthener) en un grupo de pacientes sometidos a alargamiento óseo. PACIENTES Y MÉTODOS: Entre enero 2017 y diciembre 2019, 9 pacientes (15 segmentos), edad entre 15 y 39 años, fueron sometidos a alargamiento óseo con IML: 5 pacientes tuvieron alargamiento femoral bilateral por talla baja, 1 paciente se sometió a alargamiento de Piernas bilateral por Tibia vara y acortamiento mesomélico y 3 recibieron alargamientos femorales unilaterales por discrepancia de longitud de extremidades. Todos fueron operados por el mismo cirujano, con técnica standard. Se indicó kinesiterapia al menos 5 veces por semana durante la fase de distracción. RESULTADOS: En todos se logró el objetivo de alargamiento planteado. No hubo complicaciones intra ni postoperatorias graves (TVP, TEP, Embolia grasa), ni fallas del sistema distractor. Un paciente desarrolló contracturas articulares de ambas rodillas por no adhesión a Kinesiterapia. Ninguno requirió aporte de injerto óseo, sin embargo en 2 pacientes de alargamiento de Fémur bilateral, se presentó deformidad en varo, que hizo necesario recambio a clavo convencional y un paciente desarrolló una parálisis transitoria del Nervio Peroneo común. CONCLUSIONES: El advenimiento de los IML significó un gran avance en el campo de la osteogénesis por distracción, sin embargo, aún se trata de un procedimiento complejo, que debe ser planificado cuidadosamente para minimizar los riesgos y complicaciones. Una selección meticulosa del paciente y la evaluación física y psicológica previa, son fundamentales para el éxito del procedimiento. Los casos bilaterales requieren de un seguimiento cercano, por el riesgo de falla del implante.

objective: We show our results, complications and lessons learned using the Intramedullary Magnetic Lengthener (IML) in a group of patients who were subjected to bone lengthening. PATIENTS AND METHODS: Between January 2017 and December 2019, 9 patients (15 segments), aged between 15 and 39 years, underwent bone lengthening with IML: 5 patients had bilateral femoral lengthening due to short stature, 1 patient had bilateral leg lengthening due to Tibia vara and mesomelic shortening and 3 had unilateral femoral lengthening for limb length discrepancy. All were operated by the same surgeon, with standard technique. Physical therapy was indicated at least 5 times per week during the distraction phase. RESULTS: In every case, the proposed lengthening amount was achieved. There were no serious intraoperative or postoperative complications (DVT, Pulmonary Embolism, Fat Embolism), nor failures of the distractor system. One patient developed knee joint contracture due to non-adherence to Physical therapy. None required bone grafting, however, in 2 patients with bilateral Femur, a varus deformity appeared, which required nail exchange with a conventional trauma nail. One case developed a transit common Peroneal Nerve palsy. CONCLUSIONS: IMLs represent a great advance in the bone lengthening realm, however, it is still a complex procedure, which must be carefully planned to minimize risks and complications. Meticulous patient selection and prior physical and psychological evaluation are essential to the success of the procedure. Bilateral cases need a closer follow up, because implant failure is a potential risk.

Rescate de seudoartrosis asociada a falla de la osteosíntesis en fractura femoral por bifosfonatos. reporte de un caso y revisión bibliográfica / Nonunion rescue associated with osteosynthesis failure in femoral fracture due to bisphosphonates. case report and literature review

Las fracturas asociadas al consumo crónico de bifosfonatos son cuadros descritos recientemente en la literatura médica, que presentan altas tasas de seudoartrosis. Presentamos un caso de rescate de seudoartrosis de fractura femoral subtrocantérica atípica por bifosfonatos asociada a falla del material de osteosíntesis, tratada finalmente con clavo endomedular cervicodiafisario e injerto estructural de peroné. El tratamiento con clavo cervicodiafisario más injerto autólogo está indicado para la seudoartrosis en fracturas femorales asociadas a bifosfonatos. Nivel de Evidencia: IV.

Fractures associated with chronic use of bisphosphonates are recently described entities, with high rates of nonunion. We report a case of nonunion rescue of an atypical subtrochanteric bisphosphonate femoral fracture associated with osteosynthesis failure, which was finally treated using an intramedullary nail and structural fibular graft. Treatment with autologous graft and neck-nail is indicated for nonunion in femoral fractures associated with bisphosphonates. Level of Evidence: IV.

Fracturas intertrocantéricas inestables tratadas con clavos endomedulares cortos intertrocantéricos/subtrocantéricos. Valoración de la calidad de vida y de la recuperación funcional / Unstable intertrochanteric fractures treated with ITST short intramedullary nails. Quality of life and functional recovery assessment

Introducción: El objetivo de este estudio fue evaluar una serie de pacientes con fracturas intertrocantericas inestables tratados con clavos cortos intertrocantericos/subtrocantericos (ITSTR), con especial atencion en la calidad de vida y la recuperacion funcional. Materiales y Métodos: Se incluyeron 171 pacientes con fracturas AO 3.1 A2 y A3, un seguimiento minimo de 14 meses y una edad promedio de 79 anos. Se evaluaron la calidad de vida mediante la escala WOMAC reducida convertida a una escala del 1 al 100, la recuperacion funcional en funcion del tiempo en que se logro la bipedestacion, la necesidad de ortesis al final del seguimiento y el regreso a las actividades diarias utilizando la subescala de funcion de la Musculoskeletal Tumor Society. Resultados: A los 14 meses, el promedio de la escala WOMAC total fue 77. El 73% de la poblacion camino dentro de las 36 h de la cirugia. El 48% retorno a las actividades diarias con una restriccion minima, el resto tuvo restricciones recreativas y parciales. El 71% del grupo que no utilizaba ortesis conservo tal condicion al finalizar el seguimiento. La incidencia de complicaciones intraoperatorias y posoperatoria fue del 6,5% y 23%, respectivamente. La fractura distal al clavo y el cut-out se produjeron solo en el 1%. Conclusiones: La baja incidencia de cut-out y de fractura distal al clavo con la posibilidad de retorno temprano a las actividades, con una calidad de vida y funcion buenas, convierten al ITSTR en una alternativa de eleccion para tratar las fracturas intertrocantericas inestables de cadera. Nivel de evidencia: IV.

Introduction: The aim of this study was to evaluate a consecutive series of patients with unstable inter- or subtrochanteric fractures (AO 3.1 A2 and A3) treated with short nail fixation (ITSTR), focusing mainly on quality of life and functional recovery. Methods: We included 171 patients with intertrochanteric hip fractures (AO 3.1 A2 and A3), with a minimum follow-up of 14 months. The average age was 79 years. The following parameters were evaluated: quality of life using the WOMAC reduced scale converted to a 1 to 100 scale; functional recovery based on the time needed to achieve standing position, need for orthesis at the end of the follow-up, and return to daily activities using the American Musculoskeletal Tumor Society functional scale. Results: After 14 months the average WOMAC score was 77. The 73% of the group was walking within 36 hours after surgery, 48% of the patients were able to return to their daily activities with minimal restriction, and the rest only presented partial or recreational restrictions. Considering the group without orthesis before surgery, 71% were able to maintain this condition at the end of the follow-up. The incidence of complications was 6.5% during the procedure and 23% after it. The nail distal fracture and the "cut-out" were observed in only 1% of the cases. Conclusions: The low incidence of nail distal fracture and the "cut-out", together with the early return to the daily activities and the good quality of life and function make the short ITSTR nail fixation the treatment of choice for unstable intertrochanteric hip fractures. Level of evidence: IV.

Resultados clínicos y radiológicos de las fracturas de húmero proximal tratadas mediante enclavado intramedular, así como posibles factores de riesgo de un mal resultado / Clinical and radiological results of fractures of the proximal humerus treated with intramedullary nailing and possible risk factors of a poor outcome

Antecedentes: Evaluar los resultados clínicos y radiográficos de las fracturas de húmero proximal tratadas mediante fijación con clavo intramedular, así como los factores de riesgo asociados a un mal resultado. Métodos: Se han revisado retrospectivamente a pacientes con un seguimiento mínimo de un año. Se realizó una revisión clínica objetiva mediante la escala de Constant y subjetiva del grado de satisfacción, EVA y valoración de discapacidad mediante la escala de DASH. Radiológicamente, los enfermos fueron revisados mediante radiografías AP y axial en el plano escapular. Resultados: Se incluyeron 46 pacientes, 91.3% se presentó clínicamente satisfechos con el tratamiento. La movilidad media fue de 155º de flexión, 60º de rotación lateral y rotación medial. La puntuación media del Constant fue de 70 y del DASH de 15 puntos. Se encontraron diferencias significativas en cuanto al Constant en menores de 60 años, no siendo éstas significativas con el tipo de fractura o teniendo en cuenta el DASH. Radiográficamente, la tasa de consolidación fue de 95.7%, apreciándose dos casos de seudoartrosis. En 17 pacientes se observó una consolidación en varo (38.6%). Se encontraron diferencias funcionales comparando los pacientes con consolidación en varo y consolidación anatómica. Discusión: La fijación mediante clavo intramedular es un tratamiento efectivo para las fracturas de húmero proximal, sobre todo para fracturas en dos partes del cuello quirúrgico. La alta tasa de colapso en varo, sobre todo en fracturas con gran conminución, puede acarrear una disminución en la movilidad.

Background: To assess the clinical and radiological results of fractures of the proximal humerus treated with intramedullary nail fixation as well as the risk factors associated with a poor outcome. Methods: Patients were analyzed retrospectively with a minimum follow-up of one year. An objective clinical assessment was made using the Constant scale, the subjective satisfaction scale, VAS, and the DASH scale to measure disability. The radiological assessment included AP and axial X-rays in the scapular plane. Results: Forty-six patients were enrolled. The clinical assessment showed that 91.3% of them were satisfied with treatment. Mean mobility was 155º of flexion, 60º of lateral and medial rotation. The mean Constant score was 70 and the DASH score was 15. Significant differences were found in the Constant score in individuals under 60 years of age, but they were not significant considering the type of fracture or the DASH score. X-rays showed a healing rate of 95.7%, with two cases of pseudarthrosis. Varus healing was observed in 17 patients (38.6%). Functional differences were found when patients with varus healing were compared with those who had anatomical healing. Discussion: Fixation with intramedullary nailing is an effective treatment for fractures of the proximal humerus, particularly for two-segment fractures of the surgical neck. The high rate of varus collapse, particularly in very comminuted fractures, may lead to decreased mobility.

Estudo randomizado da osteossíntese das fraturas da extremidade proximal do úmero com placa ou haste intramedular / Randomized trial on the proximal humerus fracture osteosynthesis with plate or intramedullary nailing

INTRODUÇÃO: As fraturas da extremidade proximal do úmero são frequentes, com incidência crescente no idoso e com impacto na qualidade de vida e na função do ombro. Para os casos com desvio, a placa bloqueada é o método mais utilizado de osteossíntese. Bons resultados clínicos são obtidos tanto com a placa bloqueada como com a haste intramedular bloqueada. O objetivo do estudo foi a comparação desses métodos no tratamento das fraturas da extremidade proximal do úmero quanto aos resultados clínicos, radiográficos e à taxa de complicações. MÉTODOS: Nesse estudo clínico prospectivo e randomizado, 72 pacientes com fraturas desviadas da extremidade proximal do úmero, classificadas como em 2 ou 3 partes de Neer, foram alocados para receberem osteossíntese com placa bloqueada (36 pacientes - Grupo Placa) ou haste intramedular bloqueada (36 pacientes - Grupo Haste). Os desfechos clínicos foram avaliados aos 3, 6 e 12 meses e incluíram as escalas de Constant e Murley, Universidade da Califórnia em Los Angeles modificada (UCLA), escala visual analógica de dor (EVA) e o questionário "Disability of Arm, Shoulder and Hand"(DASH) e a amplitude de movimento passiva. Os desfechos radiográficos consistiram na avaliação da consolidação e do ângulo cabeça-diáfise. As complicações foram avaliadas até os 12 meses e incluíram a avaliação do manguito rotador pela ultrassonografia. O desfecho primário do estudo foi a avaliação pela escala de Constant e Murley, aos 12 meses de pós-operatório. RESULTADOS: Sessenta e cinco pacientes completaram 12 meses de seguimento, sendo 32 no Grupo Haste e 33 no Grupo Placa. A escala de Constant aos 12 meses foi de 70,3 pontos para o Grupo Haste e de 71,5 pontos para o Grupo Placa (p = 0,750). A escala de Constant Relativa Individual foi de 81% para o Grupo Haste e de 85% para o Grupo Placa (p = 0,400). Também não houve diferença entre os grupos aos 3 e 6 meses para a escala de Constant. A escala EVA e o questionário DASH também não...

INTRODUCTION: Fractures of the proximal humerus are common, with an increasing incidence in the elderly and with a high impact on quality of life and shoulder function. For displaced fractures, the locking plate is the most used method of osteosynthesis. Studies have shown good clinical results with the use of locking plates, but also with the fixation with locking intramedullary nail. The aim of this study was to compare the clinical outcomes, radiographic results and the complications between these two methods in patients with displaced proximal humerus fractures. METHODS: In this prospective, randomized clinical trial, 72 patients with displaced fractures of the proximal humerus, classified as Neer 2- or 3-part, were randomly assigned to receive osteosynthesis with either locking plate (36 patients - Plate Group) or locking intramedullary nail (36 patients - Nail Group). The clinical outcomes were evaluated at 3, 6 and 12 months and included the Constant and Murley, University of California at Los Angeles (UCLA) and Disability of Arm, Shoulder and Hand (DASH) scores, visual analog scale (VAS) and the passive range of motion. Radiographic findings (consolidation and head shaft angle) and complications, which included the evaluation of rotator cuff by ultrasound, were also evaluated. The primary outcome was the Constant and Murley score at 12 months. RESULTS: Sixty-five patients completed 12 months of follow-up, 32 in the Nail Group and 33 in the Plate Group. The mean Constant score at 12 months was 70.3 points for the Nail Group and 71.5 points for the Plate Group (p = 0.750) and the mean Relative Constant score was 81% for the Nail Group and 85% points for the Plate Group (p = 0.400). There was also no difference at 3 and 6 months for the Constant score. VAS, DASH and radiographic findings also did not differ at 3, 6 and 12 months. Range of motion showed a 2.1 points difference in favor of the Nail Group for medial rotation at 6...

Treatment of AO/OTA 31-A3 intertrochanteric femoral fractures with a percutaneous compression plate

OBJECTIVE: AO/OTA 31-A3 intertrochanteric femoral fractures have completely different fracture line directions and biomechanical characteristics compared with other types of intertrochanteric fractures. The choice of the fixation method has been a focus of dispute among orthopedic trauma surgeons. The purpose of this study was to review the outcomes of these fractures treated with a percutaneous compression plate at our institute. METHOD: Seventeen patients with AO/OTA 31-A3 intertrochanteric femoral fractures were treated with a percutaneous compression plate at our institute from January 2010 to December 2011. The clinical data and imaging results were retrospectively analyzed. RESULTS: The medical complication of popliteal vein thrombosis occurred in one patient. Sixteen patients were followed up for 12 to 21 months. Two patients had malunion and mild pain. Fracture collapse occurred in two patients, with one having head penetration. These two patients had moderate pain. There were no occurrences of nonunion or reoperation. The mean Harris hip score obtained during the last follow-up was 84.1 (61-97). Patients with a poor quality of reduction were more likely to have pain results (p = 0.001). A trend existed toward the presence of a poor quality of reduction (p = 0.05) in patients with a collapse of fracture. Patients with poor preoperative mobility were more likely to have a lower Harris hip score (p = 0.000). CONCLUSION: The percutaneous compression plate is an alternative device for the treatment of AO/OTA 31-A3 intertrochanteric femoral fractures. Good fracture reduction and an ideal placement position of the neck screw are important in the success of the device. .

Enclavado endomedular retrógrado en fracturas diafisarias de fémur: indicaciones, técnica y resultados / Retrograde nailing in femoral shaft fractures: indications, technique and outcomes

Introducción: El enclavado endomedular fresado anterógrado es el método de elección para el tratamiento de las fracturas diafisarias de fémur. Sin embargo, la técnica retrógrada surgió como alternativa para situaciones en las que la técnica anterógrada tiene ciertas desventajas. Materiales y Métodos: Entre marzo de 2001 y enero de 2011, se realizaron 110 enclavados retrógrados de fémur, 34 de ellos en pacientes con fracturas diafisarias de fémur. Los mecanismos de lesión fueron: colisión vehicular (15 casos), traumatismo de baja energía (18 casos) y proyectil de arma de fuego (1 caso). Once pacientes (31 %) tenían lesiones asociadas. Resultados: Treinta y tres pacientes consiguieron la consolidación ósea (97 %). El tiempo medio de consolidación fue de 84 días para los clavos fresados y de 112 días para los no fresados. Hubo un caso de retraso de la consolidación. El rango de movilidad de la rodilla promedio fue de 130º de flexión (mínimo 100º y máximo 150º). Seis pacientes (17,6 %) refirieron dolor de rodilla. Conclusiones: El clavo retrógrado para el tratamiento de fracturas diafisarias de fémur consigue resultados de consolidación similares a los del clavo anterógrado de fémur. Sus posibles ventajas son la técnica simple, un menor tiempo quirúrgico y la posibilidad de operar sin el uso de una mesa de tracción.

Background: The antegrade intramedullary reamed nailing is the method of choice for treating diaphyseal femoral fractures. nevertheless, the retrograde technique has emerged as an alternative for situations in which the antegrade one presents certain disadvantages. Methods: Between March 2001 and January 2011, 110 femoral retrograde nailings were performed. thirty-four were performed in patients with diaphyseal femoral fractures. Mechanisms of injury were vehicular collision (15 cases), low energy trauma (18 cases) and ballistic trauma (1 case). Eleven patients (31 %) presented associated injuries. Results: thirty-three patients achieved consolidation (97 %). Healing after procedure occurred at 84 days for the reamed group and 112 for the undreamed one. We had one case of consolidation delay that was resolved inserting a larger diameter reamed nail together with autologous graft. The average range of motion was 130º of flexion (minimum 100º, maximum 150º). Six patients (17.6 %) reported knee pain. Conclusions: the retrograde nailing for diaphyseal femoral fractures yields consolidation results similar to those of the antegrade nailing. the possible advantages are: simple technique, the avoidance of traction table use during surgery and shorter surgical time.

Flexible intramedullary nails with traction versus plaster cast for treating femoral shaft fractures in children: comparative retrospective study / Hastes intramedulares flexíveis com tração versus aparelho gessado para o tratamento de fraturas diafisárias do fêmur em crianças: estudo comparativo retrospectivo

Femoral fractures are common in children between 2 and 12 years of age, and 75% of the lesions affect the femoral shaft. Traction followed by a plaster cast is universally accepted as conservative treatment. However, in some situations, a surgical approach is recommended. The objective here was to compare treatments for femoral shaft fractures using intramedullary nails (titanium elastic nails, TEN) versus traction and plaster casts in children. The hypothesis was that TEN might provide better treatment, with good clinical results in comparison with plaster casts.

This retrospective comparative study was conducted in a public university hospital.

Sixty children with femoral fractures were evaluated; 30 of them underwent surgical treatment with TEN and 30 were treated conservatively using plaster casts. The patients' ages ranged from 5 to 13 years (mean of 9 years).

The mean duration of hospitalization was nine days for the surgical group and 20 days for the conservative group. The incidence of overgrowth in the patients treated with TEN was 60.0% and, for those treated conservatively, 13.3%. Partial weight-bearing was allowed after 3.5 weeks in the surgical group and after 9.6 weeks in the conservative group. New hospitalization was required for 90.0% in the surgical group and 16.7% in the conservative group. Patients treated with plaster casts presented higher incidence of complications, such as loss of reduction.

The surgical method presented better results for children. .

Fraturas femorais são comuns em crianças entre 2 e 12 anos de idade, e 75% das lesões acometem a diáfise. Tração seguida de aparelho gessado (“gesso”) é universalmente aceita como tratamento conservador. Entretanto, em algumas situações o tratamento cirúrgico é recomendado. O objetivo foi comparar o tratamento de fraturas diafisárias do fêmur com hastes intramedulares (titanium elastic nails, TEN) com tração e gesso em crianças. A hipótese era de que TEN pode ser melhor tratamento, com bons resultados clínicos em comparação com o gesso.

Este estudo retrospectivo e comparativo foi conduzido num hospital público universitário.

Sessenta crianças com fraturas de fêmur foram avaliadas, 30 delas foram submetidas a tratamento cirúrgico com TEN e 30 foram tratadas de forma conservadora usando gesso. A idade dos pacientes variou de 5 a 13 anos (média de 9 anos).

O tempo médio de internação foi de 9 dias para o grupo cirúrgico e 20 dias para o grupo conservador. A incidência de crescimento excessivo nos pacientes tratados com TEN foi de 60,0% e, para aqueles tratados de forma conservadora, 13,3%. Sustentação parcial de peso foi permitida após 3,5 semanas no grupo cirúrgico e após 9,6 semanas no grupo conservador. Houve 90,0% de novas internações no grupo cirúrgico e 16,7% no grupo conservador. Pacientes tratados com gesso apresentaram maior incidência de complicações, tais como perda de redução.

Outcomes of long bone fractures treated by open intramedullary nailing at the St Ann's bay hospital, Jamaica / Resultados clínicos de las fracturas de huesos largos tratadas mediante enclavijado intramedular abierto en el hospital de Saint Ann's bay, Jamaica

Between May 2001 to August 2004, 35 patients had open nailing of long bones. There were 40 fractures fixed. Of these 40 fractures, there were 25 femoral fractures, 11 were tibial fractures and 4 were humeral fractures. There were 33 (82.5%) closed fractures and 7 (17.5%) open fractures. In the group of patients with open fractures, there were two Grade I, two Grade II and three Grade IIIB. Seven (20%) patients were lost to follow-up; all of whom had closed fractures. The final analysis as it relates to complications was done using 28 patients with 32 fractures. The majority of fractures healed without significant complication. All the patients with closed fractures went on to bony union. There was one non-union and three delayed unions. There were two infections (osteomyelitis) and this was from the open fracture cohort. This represents an infection rate of 28.6% in this cohort. Two (7.0%) patients had persistent pain and one (3.6%) patient had early removal of the nail because of failure of fixation. The mean time from injury to surgery for the fractured femur was 15.5 (range 0-49) days; fractured tibia 24.4 (range 0-40), days and fractured humerus 41.5 (20-81) days. The mean hospital stay was 18.9 (range 9-37) days for patients with fractured femur; for fractured tibia, it was 20.5 (range 3-82) days and for fractured humerus, it was 22.7 (range 3-82) days. The mean postoperative stay was 4.1 (range 1-14) days for fractured femur, 4.5 (range 1-14) days for fractured tibia and 4.0 (range 1-10) days for fractured humerus. The mean time to healing (consolidation) as defined by X-rays was 5.0 (range 3-11) months for fractured femur, 5.2 ( range 3-11) months for tibia and 7.0 (range 6- 8) months for fractured humerus.

Desde mayo de 2001 hasta agosto de 2004, 35 pacientes recibieron reducción de fracturas de huesos largos mediante enclavijado a cielo abierto. Se produjeron 40 fijaciones de fracturas. De estas 40 fracturas, 25 fracturas fueron del fémur, 11 fueron de la tibia, y 4 del húmero. Hubo 33 (82.5%) fracturas cerradas y 7 (17.5%) fracturas abiertas. En el grupo de pacientes con fracturas abiertas, hubo dos fracturas de grado I, dos de grado II y tres de grado IIIB. El análisis final en cuanto a las complicaciones, se realizó con 28 pacientes con 32 fracturas. La mayoría de las fracturas se curaron sin complicaciones significativas. Todos los pacientes con fracturas cerradas lograron finalmente la unión ósea. Hubo uno que no logró la unión y tres uniones retardadas. Se produjeron dos infecciones (osteomielitis), provenientes de la cohorte de fractura abierta. Esto representa una tasa de infección del 28.6% en dicha cohorte. Dos (7.0%) pacientes presentaban dolores persistentes, y a un (3.6%) paciente le fue retirado el clavo tempranamente debido a que la fijación falló. El tiempo promedio desde la lesión hasta la cirugía, fue de 15.5 días (rango 0-49) para la fractura del fémur; 24.4 días (rango 0-40) para la fractura de la tibia, y 41.5 días (20-81) para la fractura del húmero. La estancia promedio en el hospital fue de 18.9 días (rango 9-37) para los pacientes con el fémur fracturado; para la fractura de la tibia fue de 20.5 días (rango 3-82), y para el húmero fracturado fue 22.7 días (rango 3-82). La estadía postoperatoria promedio fue 4.1 días (rango 1-14) para el fémur fracturado, 4.5 días (rango 1-14) para la tibia fracturada, y 4.0 días (rango 1-10) días para los casos de fractura del húmero. El tiempo promedio de sanación (consolidación) tal como lo definieron los rayos X fue 5.0 meses (rango 3-11) para el fémur fracturado, 5.2 meses (rango 3-11) para la tibia y 7.0 meses (rango 6-8) para el húmero fracturado.

Manejo de las fracturas inestables del femur proximal con el clavo PFN de la AO/ASIF. Evaluacion de una serie prospectiva de 100 casos / Management of unstable proximal femur fractures with the AO/ASIF PFN nail. Evaluation of a prospective 100-case series

Introducción: El clavo compresivo deslizante ha sido eltratamiento estándar en las dos últimas décadas, aunquese han informado altas tasas de complicaciones que lleganhasta el 23 por ciento, lo cual derivó en el desarrollo de sistemas endomedulares. En 1996, la Arbeitsgemeinschaft fur Osteosynthesefragen (AO/ASIF) creó un nuevo sistema endomedular en el intento de disminuir esas complicaciones. Este sistema se conoce en nuestro medio como clavo femoral proximal o PFN (proximal femoral nail). El propósito de este trabajo es evaluar los resultados radiológicos y clínicos. Materiales y métodos: Se evaluaron 100 fracturas laterales inestables de cadera en 98 pacientes. Se realizaron controles clínicos y radiológicos en el posoperatorio inmediato, al alta y durante el seguimiento. Se completó la ficha de protocolo realizada ad hoc, en la que se consignaron las complicaciones, los resultados radiológicos y el puntaje de Merle D'Aubigne Postel. Resultados: Se observó un índice de consolidación del 98,8 por ciento en un promedio de 4 meses. Se presentaron complicaciones en 6 casos. En dos de ellos se trató de una infección superficial; en un caso, de una seudoartrosis infectada; y en tres casos, de cut-out. Se requirió reoperación en 5 pacientes (5,6 por ciento). Conclusiones: De acuerdo con los resultados obtenidos, creemos que el clavo proximal para fémur surge como una opción válida para el tratamiento de las fracturas inestables del fémur proximal, debido a su simplicidad y mínima agresión y a la baja incidencia de complicaciones técnicas encontradas.

Tratamento das fraturas diafisárias do femur com a haste intramedular bloqueada desenvolvida na Faculdade de Medicina de Ribeirão Preto / Treatment of fractures of the shaft of the femur with locked intramedullary nail developed at Ribeiräo Preto Medical School

Relatam-se os resultados obtidos no tratamento de 50 pacientes com 51 fraturas da diáfise femoral, submetidos no Serviço de Ortopedia e Traumatologia do Hospital Universitário Antônio Pedro da Universidade Federal Fluminense à osteoss¡ntese intramedular bloqueada com a haste desenvolvida na Faculdade de Medicina de Ribeiräo Preto, entre dezembro de 1994 e dezembro de 1997. Trinta e cinco fraturas foram classificadas de acordo com Winquist e Hansen, nove eram segmentares, sete tinham traço obl¡quo longo e 11 eram expostas. Três pacientes faleceram antes da consolidaçäo das fraturas; duas näo consolidaram, pois houve quebra da haste. O tempo médio de consolidaçäo das 46 fraturas restantes foi de 13,76 semanas. Utilizando-se os critérios de Thorensen para avaliar os resultados, ficou demonstrado que, dos 46 pacientes cujas fraturas consolidaram, 42 tiveram resultado excelente ou bom; em dois, regular; e em dois o resultado foi mau