Acta Orthopaedica et Traumatologica Turcica
Case Reports

Radial nerve entrapment after fracture of the supracondylar humerus: a rare case of a 6-year-old

1.

Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, Gyeonggi-do, Republic of Korea

2.

Department of Orthopaedic Surgery, Dongtan Sacred Heart Hospital, Hallym University, Hwaseong-si, Gyeonggi-do, Republic of Korea

AOTT 2022; 56: 350-353
DOI: 10.5152/j.aott.2022.22062
Read: 418 Downloads: 51 Published: 20 October 2022

Supracondylar fracture of the humerus is one of the most common fractures seen in children, and posteromedial displacement of the distal fragment in extension-type supracondylar humerus fractures can cause injury to the radial nerve. A 6-year old girl who presented with symptoms of radial nerve injury after a supracondylar fracture of the right humerus with complete posteromedial displacement of the distal fragment (Gartland type III) underwent surgery where closed reduction and percutaneous pinning was performed. The patient was routinely followed up and at 6 months postoperatively no neurological improvement was seen. Exploratory surgery revealed complete discontinuation of the radial nerve at the fracture site and entrapment of the nerve stumps in healed bone callus. A gap of 2 cm was observed between nerve stumps, and sural nerve cable grafting was performed with good results. If neurological symptoms do not improve over time, appropriate differential diagnosis and, if necessary, exploratory surgery should be considered. Despite limited reports and their conflicting outcomes, sural nerve cable grafting could be a useful option to bridge the gap of discontinued nerve injury.

Level of Evidence:  Level IV, Case Report

Cite this article as: Ha C, Han S, Sung Lee J, Hong I. Radial nerve entrapment after fracture of the supracondylar humerus: a rare case of a 6-year-old. Acta Orthop Traumatol Turc. 2022;56(5):350-353

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ISSN 1017-995X EISSN 2589-1294