Abstract

Background: Radioulnar synostosis is a rare congenital condition characterized by abnormal fusion of the radius and ulna, leading to restricted forearm rotation and limitations in daily activities. Early diagnosis and appropriate surgical intervention are crucial for improving functional outcomes, yet the optimal treatment approach remains controversial due to limited evidence. This study aims to present a unilateral proximal radioulnar synostosis case in an 8-year-old patient, detailing the surgical management and postoperative results to contribute to the existing literature on effective treatment strategies. Case presentation: An 8-year-old patient presented with unilateral proximal radioulnar synostosis diagnosed at the age of two. The patient exhibited significant limitations in daily activities, scoring 6 points (poor) on the Failla functional scale and classified as grade III according to the Cleary and Omer radiological classification. Surgical resection of the synostosis via osteotomy was performed, followed by immobilization with a cast for six weeks. Rehabilitation commenced after cast removal, focusing on improving supination and overall limb function. The postoperative evaluation showed marked improvement, with the patient achieving 12 points (good) on the Failla scale and increased range of supination. Conclusion: This case highlights the importance of timely diagnosis and intervention in radioulnar synostosis. Adequate physical examination and imaging studies enable early treatment, which can significantly improve the functional prognosis in affected patients. The successful outcome in this patient suggests that surgical resection combined with rehabilitation is an effective treatment modality for this rare condition.

Keywords

radioulnar synostosis, cleary and omer classification, failla scale, surgical treatment, case report, unilateral, mexico