UPPER LIMBMissed proximal radioulnar joint translocation with ulnar nerve entrapment an unusual injury in a childNajid, Hamzah; Abdul Rashid, Abdul Halim; Ibrahim, SharafAuthor Information Department of Orthopaedics and Traumatology, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia Correspondence to Hamzah Najid, MD, Department of Orthopaedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000 Kuala Lumpur, Malaysia Tel: +60 193 115 211; fax: +60 391 726 473; e-mail: email@example.com Journal of Pediatric Orthopaedics B: January 2019 - Volume 28 - Issue 1 - p 79–84 doi: 10.1097/BPB.0000000000000556 Buy Metrics Abstract Traumatic elbow dislocation in a child is rare, and it is usually associated with fractures. Simultaneous proximal radioulnar joint (PRUJ) translocation with ulnar nerve palsy is even rarer. We report an unusual case of a missed PRUJ translocation with ulnar nerve entrapment in a 10-year-old child. The key to diagnosing the translocation is the position of the proximal radius, which lies medial to the ulna. This was treated by open reduction and release of the entrapped nerve. The ulnar nerve palsy recovered fully at the 1-year follow-up. Although PRUJ translocation with ulnar nerve entrapment is a rare injury, a successful outcome is possible with timely open reduction and release of the ulnar nerve. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.