Background: Patients undergoing arthroscopic surgery for rotator cuff tears with shoulder adhesion often experience significant postoperative pain and stiffness. This study investigates whether adding a long-acting local anesthetic (Liposomal Bupivacaine) to a standard anti-inflammatory steroid injection (Compound Betamethasone) during surgery can improve outcomes. Methods: This is a prospective, randomized, double-blind, controlled trial. Approximately 70 eligible adult patients will be randomly assigned to one of two groups: (1) the Combination Group, receiving an intra-articular injection of Liposomal Bupivacaine plus Compound Betamethasone after surgery, or (2) the Control Group, receiving Compound Betamethasone alone. Patients and outcome assessors will not know the group assignment. What participants will do: All participants will receive standard arthroscopic rotator cuff repair and adhesion release. They will be followed for 12 months after surgery, with assessments at multiple time points (from hours to months post-op) to measure pain levels, shoulder function, range of motion, and tendon healing via MRI. Main Goals: The primary goal is to compare the improvement in UCLA shoulder scores between the two groups at 12 months. Secondary goals include comparing pain scores, other functional scores (Constant-Murley), joint mobility, MRI findings, and safety (complication rates).
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Change in Constant-Murley Shoulder Score
Timeframe: Baseline, 3 months, and 12 months postoperatively.
Visual Analog Scale (VAS) Pain Score at Rest
Timeframe: Baseline, 3 months, and 12 months postoperatively.