Recurrence Rate, Complications and Revisions in Long-term Follow-up of Arthroscopic Posterior Bankart Repair Compared to Posterior Bone Block

BACKGROUND: The literature suggests that both arthroscopic posterior Bankart repair (APB) and posterior bone block (PBB) are effective procedures in the short to medium term, although recurrence and revision rates do not appear to be negligible. However, fewer studies, especially comparative ones, are available regarding the long-term outcomes of these procedures. PURPOSE/HYPOTHESIS: The purpose was to compare the long-term outcomes of APB and PBB procedures. It was hypothesized that at long-term follow-up, APB would have the same recurrence rate as PBB but lower complication and revision rates, with both techniques providing good or excellent functional outcomes and high satisfaction and return-to-sport (RTS) rates. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: From January 2007 to December 2024, 86 patients underwent surgery for posterior shoulder instability. Exclusion criteria included a single episode of posterior instability (Moroder types A1 and A2), nontraumatic instability, static instability (Moroder type C1s and C2), functional or voluntary and reproducible instability (Moroder type B1), multidirectional instability, posterior unstable painful shoulder, posterior Bankart lesion with paraglenoid cysts, and patients with