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Article in Spanish | LILACS, BINACIS | ID: biblio-1444934

ABSTRACT

Introducción: Los objetivos de este estudio fueron determinar la incidencia de lesión iatrogénica intraquirúrgica del nervio radial durante la osteosíntesis de la diáfisis y el extremo distal del húmero, distinguir factores de riesgos asociados y reconocer elementos pronósticos que participan de su recuperación. Materiales y Métodos: Se evaluó, en forma retrospectiva, a 82 pacientes con osteosíntesis de húmero entre 2005 y 2021, sin parálisis radial preoperatoria. Se consideraron los sistemas de fijación utilizados, y se compararon las cirugías primarias con las reoperaciones y el tiempo transcurrido entre estas. El diagnóstico de parálisis radial posoperatorio fue clínico. Todos los pacientes fueron tratados con férula en extensión de muñeca, electroestimulación, kinesiología y vitaminas B1, B6, B12. La electromiografía se solicitó a los fines del pronóstico. Resultados: Nueve pacientes tuvieron déficit motor del nervio radial en el posoperatorio inmediato. El sistema de fijación era una placa (7 casos), sistema de cable-placa (1 caso) y clavo endomedular acerrojado anterógrado (1 caso). Siete ocurrieron en cirugías primarias y dos en reoperaciones. El 88% recuperó su función motora completamente antes de los 6 meses después de la parálisis. La electromiografía reveló un nervio radial no excitable en el 22% restante con parálisis definitiva. Conclusiones: El uso de placa de osteosíntesis, la disección intraoperatoria del nervio radial y las reoperaciones aumentan la incidencia de parálisis. Un nervio radial no excitable se relaciona con un peor pronóstico de recuperación espontánea. Nivel de Evidencia: IV


Introduction: The purpose of this study is to determine the incidence of intraoperative iatrogenic radial nerve injury after osteosynthesis of the diaphysis and distal end of the humerus, identify associated risk factors, and determine the prognostic factors involved in its recovery. Materials and Methods: We retrospectively assessed 82 humerus osteosynthesis cases between 2005 and 2021 who had normal radial nerve function before surgery. We evaluated the fixation systems used, the type of surgery (primary versus revision), and the intervals between surgeries. The diagnosis of postoperative radial palsy was made by clinical examination. All patients were treated with wrist extension splint, physiotherapy, and vitamins B1, B6, and B12. Results: After humerus fixation, 9 patients developed motor palsy. Seven cases were fixed with plates, one with a cable-plate system, and one with an anterograde locking intramedullary nail. Seven cases (22%) occurred after primary procedures, while two occurred during revisions. Within 6 months, 88% had regained full motor function. In the remaining 22% of patients with definite palsy, electromyography revealed no excitability of the radial nerve. Conclusions: The use of an osteosynthesis plate, as well as intraoperative dissection and neurolysis of the radial nerve, were identified as risk factors for the development of radial palsy. Reoperations on the humerus, on the other hand, are a risk factor that increases the likelihood of postoperative radial nerve palsy. A radial nerve with no excitability on the postoperative electromyogram has a poor prognosis of spontaneous radial nerve function recovery. Level of Evidence: IV


Subject(s)
Arm , Radial Nerve/injuries , Fracture Fixation, Internal , Humeral Fractures , Iatrogenic Disease , Intraoperative Complications
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