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.
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