Objective: The purpose of this study was to evaluate the results of a new reconstruction with anconeus interposition arthroplasty in acute multiligamentous elbow injuries with irreparable radial head fractures.Methods: Five patients (3 males, 2 females) with a mean age of 42.6 years who underwent reconstruction with anconeus arhtroplasty were evaluated. With lateral approach, lateral capsuloligamentous structures were repaired, the radial head was excised, and anconeus interposition arthroplasty was performed. With medial intervention, the medial collateral ligament was repaired, and the ulnar nerve was transposed anteriorly. Clinical and radiological evaluation was performed the end of a mean follow-up period of 63 months.Results: Mean Mayo Elbow Performance, Oxford Elbow, and Disabilities of the Arm, Shoulder and Hand (DASH) scores were 91, 41.4, and 13.76, respectively. Average elbow extension loss was 10.2° and average forearm supination loss was 5.2°. Dynamic elbow instability tests were within normal limits. On elbow radiographs, the average increase in cubitus valgus angle was 5.4°. No patient reported limitation in daily activities. There was no heterotopic ossification in any patient. Mean radial shortening was 1.39 mm, and no patient suffered from wrist pain at final follow-up. Average Mayo wrist score was 91 points.Conclusion: The combination of repair of the medial and lateral structures, radial head resection, and anconeus interposition arthroplasty may be a good alternative in the treatment of acute multiligamentous elbow injuries with irreparable radial head fracture.
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