Good short term results have led to increased use of synthetic ligaments for acute and chronic acromioclavicular joint (ACJ) disruption. They have proved quite safe in the short term but we present two cases of osteolysis following ACJ reconstruction using a synthetic ligament, reminding surgeons of potential complications with artificial ligaments. A high index of suspicion is needed to diagnose such complications early before irretrievable bone loss to osteolysis.
INTRODUCTIONThe Nottingham Surgilig™ (Surgicraft, Redditch, UK) was introduced in 2001 as a means of addressing failed acromioclavicular joint (ACJ) surgery [1]. The ligament comprises a braided synthetic polyester ligament with loops on both ends to reconstruct the disrupted coracoclavicular ligaments. The technique involves looping the ligament around the coracoid and securing to the distal clavicle with a screw, thus providing strong fixation. Its use has increased over last 5 years and, although originally intended for failed ACJ reconstructions, it is increasingly being used as primary method of stabilization [2,3] in Rockwood type III-V injuries [4].Potential complications reported so far include coracoid fracture [1] and skin irritation from the retaining screw, necessitating removal [2]. A recent case report [5] described distal clavicle osteolysis following primary fixation of a Rockwood type III injury using Surgilig. This mode of failure presents challenge for the salvage as a result of the bone loss involved, and can be particularly difficult if it leads to significant erosion of the coracoid process. We report two cases of osteolysis in our practice, one of which involved the coracoid process, following fixation with Surgilig.