Age, glenoid bone fragment, and glenoid bone loss increase recurrence risk after arthroscopic bony Bankart repair

Patients without recurrence were generally older, had shorter delay from the initial instability event, fewer preoperative instability events, and larger GBF for incorporation in the repair. In younger patients, smaller GBF and greater GBL were strongly associated with recurrence. These findings indicate that the longer the elapsed time, the greater the reabsorption of the glenoid bone fragment and, consequently, the greater the glenoid bone loss. Therefore, strategies aimed at preserving fragment size, potentially through timely surgical intervention, may help reduce recurrence. In patients aged over 40 years, GBL and GBF did not confer the same recurrence risk. Further studies are needed to clarify the thresholds for elapsed time and number of instability events that significantly affect recurrence after ABBR.