Annular Ligament Interposition Into Radiocapitellar Joint in an Adult Patient: A Case Report

This is an unusual case of annular ligament interposition into the radiocapitellar joint (ALIRJ) in an 18-year-old female volleyball player with hyperlaxity, who experienced acute elbow pain and restricted motion following stretching. Magnetic resonance imaging confirmed annular ligament interposition, and reduction was successfully achieved using repetitive pronation and supination with traction and flexion in hyperpronation. After 14 months, the patient was pain free, with full range of motion.

ALIRJ is a common pediatric condition but is rare in adults. This case highlights the need to consider ALIRJ in adult patients with hyperlaxity and demonstrates the effectiveness of tailored maneuvers to avoid misdiagnosis.