Abstract
When the lateral collateral ligament (LCL) complex fails to support the radiocapitellar and ulnohumeral joints in advanced stages of insufficiency, the patient experiences posterolateral rotatory instability (PLRI). Open lateral ulnar collateral ligament repair with a ligamentous graft has been the standard treatment for PLRI. Despite producing good clinical stability rates, this method is associated with significant lateral soft-tissue dissection and a lengthy recovery period. By fastening the LCL to its humeral insertion, arthroscopic imbrication of the LCL can increase stability. The senior author modified this technique. With the aid of a passer, the LCL complex, lateral capsule, and anconeus may be weaved with a single (doubled) suture, secured with a Nice knot. LCL complex imbrication may be used to restore stability and improve pain and function in patients with grade I and II PLRI.