Avulsion Fracture of the Sublime Tubercle: A Case Report

Abstract

Fractures of the ulnar sublime tubercle are a rarely reported site of ulnar collateral ligament injury. Presented here is a case report of a displaced avulsion fracture of the sublime tubercle of the ulnar coronoid process in a 58-year-old lady. An open reduction and internal fixation of the fractured sublime tubercle, with two 3 mm cannulated screws, through the medial approach was carried out. Post-operative recovery was complicated by ulnar nerve paraesthesia, which resolved completely. Functional recovery was satisfactory with a return to her normal activities. Traumatic avulsion fracture of the sublime tubercle of the ulnar coronoid process is an underreported injury. Avulsion fracture of the sublime tubercle of the ulnar coronoid process is a rare cause for medial elbow pain and instability. Clinicians should have a high index of suspicion in patients presenting with elbow pain after minimal trauma.