Isolated distal radioulnar joint osteochondroma presented with carpal tunnel syndrome in an adult: A case report and review of the literature

Abstract

Osteochondromas are the most common benign bone tumors, usually developing in the distal femur, proximal tibia, and proximal humerus. Solitary osteochodromas around the wrist joint are extremely rare. Slowly growing lesions could cause pain, swelling, loss of hand grip, radiocarpal motion restriction, and median nerve neuropathy. Here we present a rare case of solitary osteochondroma which originated from the distal ulna and settled in the distal radioulnar joint. The lesion restricted the forearm rotation while compressing on the median nerve at the carpal tunnel. Surgical removal of the lesion resulted in symptom relief, restoration of the forearm rotation, and median nerve decompression. Precise physical examination of the wrist beside accurate paraclinical evaluations are mandatory in patients with secondary carpal tunnel symptoms.

Keywords

• Carpal tunnel syndrome
• Osteochondroma
• Wrist
• Distal radioulnar joint
• Median nerve neuropathy