Surgical reconstruction for posterolateral rotatory instability of the elbow.

We reviewed the results of 10 patients (10 elbows) who underwent surgical reconstruction for clinically symptomatic posterolateral rotatory instability of the elbow. The symptoms resulted from previous dislocation or a hyperextension or varus stress injury of the elbow. Two elbows had underlying preexisting varus deformity. Surgical reconstruction was performed with a tendon graft in 6 elbows and reattachment of the lateral ulnar collateral ligament to the humerus in 4. Postoperatively, no patient had residual instability or a positive pivot shift test in the elbow. Results were graded as excellent or good in 8 and fair in 2. All patients with excellent results had surgical reconstruction with a tendon graft. Subjective assessment revealed that all 10 patients were satisfied with the outcome of the surgery. Accurate recognition of posterolateral rotatory instability of the elbow is important for appropriate management. Surgical ligament reconstruction or repair is the most favorable treatment option for restoration of normal elbow function. The choice of reconstruction with a tendon graft appeared to produce better results than the reattachment of the injured ligament by itself in achieving an excellent outcome.