Inconsistencies in Controlling for Risk Factors for Recurrent Shoulder Instability After Primary Arthroscopic Bankart...

Area of Science:

• Orthopaedic Surgery
• Sports Medicine
• Biomechanical Engineering

Background:

• Arthroscopic shoulder stabilization failure rates exhibit significant variability in current literature.
• Identifying predictive factors for failure is crucial for optimizing patient selection, surgical techniques, and the role of bony procedures.
• Heterogeneity in risk factor analysis complicates evidence-based management decisions.

Approach:

• This systematic review critically assessed reported risk factors for recurrent instability following arthroscopic Bankart repair.
• It identified studies with comprehensive confounding factor analysis and recommended consistent reporting for future clinical research.
• The review adhered to PRISMA guidelines, analyzing 29 full-text articles meeting inclusion criteria.

Key Points:

• Off-track lesions, glenoid bone loss, and Instability Severity Index Score were the most consistently significant risk factors in multivariate analyses.
• Advanced imaging improved the statistical significance of glenoid bone loss detection, with critical thresholds of 10-15%.
• Lower Instability Severity Index Score thresholds (2-4) were found to be predictive.

Conclusions:

• Many studies on arthroscopic Bankart repair failure lack control for confounding variables.
• Future research should standardize reporting, utilize advanced imaging for glenoid bone loss, and consider lower Instability Severity Index Score thresholds.
• Consistent reporting of factors like off-track lesions, glenoid bone loss, and Instability Severity Index Score is recommended.