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  • Title: Surgical release for posttraumatic loss of elbow flexion.
    Author: Park MJ, Chang MJ, Lee YB, Kang HJ.
    Journal: J Bone Joint Surg Am; 2010 Nov 17; 92(16):2692-9. PubMed ID: 21084579.
    Abstract:
    BACKGROUND: Several surgical approaches have been suggested for the treatment of posttraumatic elbow stiffness; however, the optimal approach to elbows with considerable loss of flexion has not been well described. We investigated the pathologic lesions causing posttraumatic loss of elbow flexion and analyzed the results of surgical release. METHODS: Forty-two patients with <100° of elbow flexion due to an extrinsic contracture following trauma underwent surgical release at a median of ten months after injury. To achieve maximum flexion, release of the posterior band of the medial collateral ligament was mandatory in all patients, and only four patients required additional anterior procedures. The ulnar nerve was transposed anteriorly in forty patients, including three who had had a previous transposition. To evaluate the results, we compared preoperative and postoperative elbow motion, Mayo Elbow Performance Index (MEPI) scores, and radiographs. RESULTS: Intraoperatively, heterotopic ossification was observed in forty patients. It was located predominantly in the posteromedial aspect of the capsule. Heterotopic bone was more commonly found during surgery than it was identified preoperatively on radiographs. Mean flexion increased significantly from 89° preoperatively to 124° (range, 90° to 140°) at a mean of thirty-nine months postoperatively. The mean size of the flexion contracture decreased from 34° preoperatively to 9° (range, 0° to 30°) postoperatively. Overall, ≥120° of final flexion and a total arc of ≥100° were regained by 88% of the patients. The mean MEPI score improved significantly from 73 points preoperatively to 94 points (range, 72 to 100 points) postoperatively, with the result rated as excellent in thirty-two patients, good in eight, and fair in two. Two patients had clinical recurrence of heterotopic ossification associated with a failure to obtain an increase in flexion. CONCLUSIONS: This study demonstrates that posttraumatic heterotopic ossification, particularly in the posteromedial aspect of the capsule, is closely associated with loss of elbow flexion. Satisfactory restoration of elbow flexion can be obtained in the majority of patients by surgical release of the posterior band of the medial collateral ligament and excision of heterotopic bone.
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