Lateral collateral ligament reconstruction in atraumatic posterolateral rotatory instability.

Background: Chronic elbow pain has several causes. Instability pain is one of the differential diagnosis. Posterolateral rotatory instability (PLRI) of the elbow results from lateral collateral ligament (LCL) insufficiency. This instability has been recognized in association with trauma of the elbow. The standard treatment of LCL insufficiency is ligament reconstruction with a tendon graft. Treatment outcome of LCL reconstruction in atraumatic PLRI cases has been rarely reported. This study reports the results of LCL reconstruction in patients with chronic lateral elbow pain from atraumatic PLRI.

Materials and methods: Data were collected from 36 patients referred to our institution for surgery because of chronic lateral elbow pain between November 2011 and June 2015. Six patients with atraumatic PLRI underwent LCL reconstruction with tendon graft. Demographic data, number of steroid injections, postoperative clinical examination, Mayo Elbow Performance Index, 11-item version of the Disabilities of the Arm, Shoulder and Hand score, and complications were recorded with a mean follow-up of 24 months.

Results: Reconstruction resulted in significant improvement of pain. The mean postoperative Mayo Elbow Performance Index score was 97.5 (range, 95-100), and the score of the 11-item version of the Disabilities of the Arm, Shoulder, and Hand was 9 (range, 3.3-33). Postoperative instability test results were negative in all patients. Mean postoperative range of motion was 136° in flexion and 1° in extension. No complications were detected at the follow-up assessment.

Conclusions: We consider LCL reconstruction is one of the reference treatments for atraumatic PLRI because it provides effective and reliable results.