Arthroscopic Subacromial Decompression vs. Physical Therapy for Stage II Shoulder Impingement Syndrome: A Comparative Review of Functional and Social Impact.

Shoulder impingement syndrome is a highly frequent shoulder pathology that accounts for a large majority of visits in the primary care and orthopedic setting. Stage II impingement syndrome, defined as a progression of stage I impingement that occurs once the rotator cuff tendons have undergone fibrosis and tendonitis, is a critical phase in shoulder joint pathology that requires intervention. Although various treatments exist, including arthroscopic subacromial decompression (ASD) and physical therapy (PT), comparative data on their effectiveness, specifically for stage II impingement syndrome, remains limited. This review evaluates and compares the long-term outcomes of ASD and structured PT in specifically managing stage II shoulder impingement syndrome, focusing on pain relief, functional recovery, and return to daily activities with improvement in overall quality of life. Uniquely, this review also analyzes the social determinants of improved functional outcomes and the role that shared decision-making (SDM) plays in patient functionality and satisfaction. A comprehensive literature search was conducted using PubMed and Google Scholar, including only English-language, full-length clinical trials and randomized controlled trials that specifically addressed stage II shoulder impingement syndrome. Studies were screened using predefined inclusion and exclusion criteria, resulting in a final set of six articles for analysis. Outcomes were synthesized in a comparative table across both interventions. After analyzing multiple studies, ASD demonstrated no statistically significant benefit over PT in pain reduction, disability, work capability, muscle integrity, or patient-reported functional outcomes over two- to five-year follow-ups. Current evidence does not support the routine use of arthroscopic subacromial decompression over structured physical therapy for the management of stage II shoulder impingement syndrome, as both approaches yield comparable outcomes in pain reduction, functional improvement, and return to daily activities. Literature also supports improved outcomes with greater SDM preoperatively. These findings highlight the importance of adopting a personalized, patient-centered treatment strategy. In developing an optimal care plan, it is important to consider a range of individual factors, including the patient's age, occupation, access to emotional and physical support, financial circumstances, and long-term recovery goals.