Clinicoradiological Outcome in Midterm Follow-up After Subscapularis Repair Using Single Anterior Portal and Modified Mason Allen Stitch

Background: This study aims to evaluate the clinical and radiological outcomes following subscapularis tendon repair utilizing a single anterior portal and a modified Mason-Allen suture technique. Methods: A prospective observational study was performed on 28 shoulders from patients undergoing subscapularis repair using a modified Mason-Allen single-row technique. All surgeries, performed through a single anterior portal, were conducted by the lead author between June 2017 and June 2021. Functional outcomes were assessed using the ASES, Constant-Murley and UCLA scoring systems at 6 weeks, 3 months, 6 months, 1 year and 2 years postoperatively. Additionally, subgroup analysis was conducted based on Lafosse grading, while radiological outcomes were interpreted using the KIMS and Sugaya criteria. Results: Participants had a mean age of 56.74 years (±9.63), with equal representation of both sexes. Over half of the patients (57.1%) presented with Lafosse Grade 2 tears. All scoring systems (ASES, Constant-Murley and UCLA) demonstrated statistically significant improvements over time (Friedman test p < 0.001). Conclusion: Subscapularis repair via a single anterior portal using the modified Mason-Allen technique yields favorable functional outcomes and effective tendon healing on midterm follow-up.