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J Wrist Surg 2024; 13(04): 352-355
DOI: 10.1055/s-0043-1776139
Case Report

Avulsion Fracture of the Extensor Carpi Ulnaris: A Report of Two Cases

Evan Fang 
1   Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
,
Matthew Choi
2   Division of Plastic Surgery, McMaster University, Hamilton, Ontario, Canada
,
Michael J. Cooper
3   Division of Plastic Surgery, Queen's University, Kingston, Canada
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Abstract

Background Avulsion fracture of the extensor carpi ulnaris (ECU) bony insertion at fifth metacarpal base is a rare injury that may preclude recognition on radiographs.

Case Description We report two cases of ECU avulsion fracture, both of which were successfully treated surgically by open reduction and fixation (ORIF).

Literature Review Only two cases of ECU avulsion fracture have previously been reported in the literature. Forced motion of the wrist into a position of hyperflexion and/or radial deviation appears to be a common mechanism.

Clinical Relevance Clinicians should be aware that ECU avulsion fractures can occur in isolation or in association with other fractures of the hand or wrist. ORIF is warranted due to the prospect of impaired wrist range of motion as well as persistent pain caused by the avulsed fragment.

Keywords

wrist fracture - ECU tendon - open reduction and internal fixation - ECU avulsion - metacarpal base fracture


Publication History

Received: 20 June 2023

Accepted: 20 September 2023

Article published online:
07 November 2023

© 2023. Thieme. All rights reserved.

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