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  • Title: Application of distal radius-positioned hinged external fixator in complete open release for severe elbow stiffness.
    Author: Zhou Y, Cai JY, Chen S, Liu S, Wang W, Fan CY.
    Journal: J Shoulder Elbow Surg; 2017 Feb; 26(2):e44-e51. PubMed ID: 28104095.
    Abstract:
    BACKGROUND: Radical release for severe stiff elbows may lead to instability. Hinged external fixation is used to treat unstable elbows. We hypothesized that extensive open release combined with a distal radius-positioned hinged external fixator would have good performance and low complications rate in treating severe elbow stiffness. Thus, the efficacy and security of this technique were assessed in this study. METHODS: We retrospectively reviewed 38 post-traumatic elbows with severe stiffness that underwent arthrolysis between February 2011 and February 2014. All patients were assessed as having elbow instability after complete arthrolysis. Ligament repair was combined with implantation of a hinged external fixator (fixed to the humerus and distal radius) to maintain elbow stability. Flexion arc, forearm rotation, Mayo Elbow Performance Score, elbow stability, and radiographs were evaluated preoperatively and postoperatively, and complications were documented. RESULTS: Mean follow-up was 31 months. Significant improvement was noted in flexion-extension arc (from 27° to 126°), forearm rotation (from 148° to 153°), and mean Mayo Elbow Performance Score (from 68 points to 96 points). Mean pronation arc decreased from 66° preoperatively to 6° at 1.5 months of follow-up and showed a transient reduction during first 6 months postoperatively. Pin-related infection occurred in 2 patients, which was cured with conservative treatment. Two patients had moderate instability after removal of the fixator and regained stability at the 12-month follow-up. At the last follow-up, complications included ulnar nerve paralysis in 3, recurrence of heterotopic ossification in 1, and moderate pain in 1. CONCLUSIONS: Complete open release combined with a distal radius-positioned hinged external fixator is an effective treatment for severe stiff elbows. This technique had a low complication rate.
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