Ulnar osteotomy and monolateral external fixator for the treatment of chronic Monteggia fractures in children: comparison between gradual and acute radial head reduction

Author:

Liu Yanhan1,Shi Weizhe1,Li Yiqiang1,Hong Kai1,Li Jingchun1,Xun Fuxin1,Canavese Federico12,Xu Hongwen1

Affiliation:

1. Department of Pediatric Orthopedics, GuangZhou Women and Children’s Medical Center, Guangzhou, China

2. Department of Pediatric Orthopedic Surgery, Lille University Hospital and Faculty of Medicine Av. Eugene Avinée, Lille, France

Abstract

This study evaluated the outcomes of chronic Monteggia fractures (CMFs) treated by ulnar osteotomy and monolateral external fixator (MEF), and compare the outcome of gradual versus acute radial head reduction. Two groups of patients were identified. Group 1: gradual reduction of the radial head (n = 13); group 2: acute reduction (n = 6). Clinical outcome was evaluated by Kim Elbow Score, whereas radiographic outcome was assessed on plain radiographs. The effect of age, side, time from initial trauma to surgery, rate of unplanned surgery, amount of angulation and lengthening, and final outcome were evaluated. Univariate analysis was performed to identify factors associated with good radiographic outcome. Thirteen patients underwent gradual correction of the ulna. The mean duration of correction was 43.4 days (range, 21–82); the mean angulation and lengthening of the ulna were 22.8° (range, 0°–35°) and 22.2 mm (range, 12.2–40.9), respectively. Six patients underwent acute reduction intraoperatively, the mean angulation and lengthening of the ulna were 17.2° (range, 4°–33.9°) and 5.2 mm (range, 2.5–12.2), respectively. CMF treated by ulnar osteotomy and gradual distraction had better radiological outcome (Group 1; 92.3% 12/13) than those treated by acute reduction of the radial head (Group 2; 3/6, 50%) (P = 0.071). Reoperation rate was found to be significantly correlated with a fair or poor radiographic results (P = 0.016). Good clinical and radiological outcomes should be expected in CMF patients treated by gradual lengthening and angulation of the ulna with a MEF.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Orthopedics and Sports Medicine,Pediatrics, Perinatology and Child Health

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