• Sung Il Wang and Seung Cheol Lee.
• Department of Orthopaedics Surgery, Jeonbuk National University Medical School, Research Institute for Endocrine Sciences and Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, 567 Baekje-ro, Dukjin-gu, Jeonju, Republic of Korea.
• Medicine (Baltimore). 2022 Feb 11; 101 (6): e28661e28661.

RationaleTraumatic radial head dislocation (RHD) can occur due to hyperpronation injury with sequential disruption of the annular ligament, quadrate ligament, and the interosseous membrane. Although studies have shown that traumatic RHD is generally associated with Monteggia fracture-dislocation, traumatic RHD occurring with ipsilateral radial shaft fractures has rarely been reported. Delayed RHD secondary to the malunion of isolated radial shaft fractures is extremely rare.Patient ConcernsWe report the case of a 12-year-old right-handed boy with progressive pain and limited range of motion in the right elbow.DiagnosisThe patient was diagnosed with delayed RHD associated with radial shaft fracture malunion.Interventions And OutcomesA corrective osteotomy was performed at the site of malunion with open reduction of the radial head using an extensile lateral approach. The annular ligament was disrupted. Forearm rotation causes radial head subluxation Therefore, the Bell Tawse procedure was additionally performed to reconstruct the annular ligament by turning down a strip of triceps tendon and anchoring it around the radial neck.LessonsMalunion of the radial shaft can cause delayed RHD with a limited elbow range of motion. Annular reconstruction using a strip of the triceps tendon and corrective osteotomy of the radial shaft with an extensile lateral approach may be useful for treating this rare entity or situation.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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