Loose Body Formation in the Subacromial Bursa following Rotator Cuff Repair with a REGENETEN® Bioinductive Implant: A Case Report

Although REGENETEN® has been proven safe and effective, rare complications such as implant detachment and foreign body reactions should be considered. Unlike rice body formation, which is associated with systemic inflammatory conditions and necessitates evaluation for underlying rheumatologic disease, the present case represents an implant-derived loose body that was definitively treated by surgical excision. To the best of our knowledge, this is a rare case of loose body formation within the subacromial bursa due to migration of a REGENETEN® implant staple. Awareness of this complication is clinically important in patients with persistent post-operative mechanical symptoms following rotator cuff repair with REGENETEN®.