Najd Mazhar F, Hasan A, Sadeghzadeh M, Mahmoudinasab O. Irreducible Radial Head Dislocation in Pediatric Patients With Monteggia Fracture: A Series of Nine Patients. JROS 2023; 10 (4) :245-250
URL:
http://jros.iums.ac.ir/article-1-2250-en.html
1- Department of Orthopedics,Bone and Joint Reconstruction Research Center, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Abstract: (179 Views)
Background: In pediatrics with Monteggia fractures, anatomical reduction of the ulna results in spontaneous radial head reduction. However, spontaneous reduction of the radial head does not occur in some patients for various reasons. The characteristic features of this condition, particularly in the pediatric population, have rarely been reported.
Objectives: This study aims to report characteristic features in nine pediatric patients with irreducible radial heads in the context of Monteggia fracture.
Methods: Medical profiles of nine skeletally immature patients with Monteggia fractures who underwent surgery for treating irreducible radial head dislocation between 2007 and 2024 were retrospectively reviewed. Eight patients presented with an initial injury, and one patient had re-dislocation following initial management at another center. The main finding of interest was the cause of radial head irreducibility.
Results: The study population included seven men (77.8%) and two women (22.2%) with a mean age of 5.9±4.1 years. The mechanism of injury decreased in all patients. Four patients (44.4%) had associated injuries. The most frequent site of ulnar fracture was proximal ulna (n=5, 55.5%). The oblique fracture was the most common type of ulnar fracture (n=7, 77.8%). The radial head was dislocated anteriorly in all patients. The cause of irreducibility was interposed annular ligament in seven patients (77.8%) and interposed posterior interosseous nerve in two patients (22.2%). No postoperative complications, including radial head re-dislocation or subluxation, were found until the last follow-up visit.
Conclusion: Spontaneous reduction of the radial head in the context of Monteggia fracture may not occur in a subset of pediatric patients, requiring an open reduction to adequately address the cause of irreducibility. The interposed annular ligament seems to be the most frequent cause of irreducibility in this population.
Type of Study:
Research Article |
Subject:
Hand surgery / Elbow Received: 2023/07/4 | Accepted: 2023/10/7 | Published: 2023/11/1