A 52-year-old male presents with 3 months of progressive right shoulder pain during overhead activities. Coronal MRI shows the structure marked **A** (supraspinatus tendon) with a full-thickness tear measuring 2.5 cm in anteroposterior dimension, with surrounding edema and mild acromion sclerosis. The patient is moderately active and willing to pursue conservative management initially. Which of the following is the MOST appropriate next step in management?

Explanation

## Why option 2 is correct The supraspinatus tendon marked **A** passes through the subacromial space and is the most commonly affected structure in rotator cuff pathology due to mechanical impingement and its watershed blood supply. According to Neer's classification, this patient presents with Stage III pathology (tendon tear with bone changes). However, the clinical anchor emphasizes that **shared decision-making** guides management: physical therapy with eccentric strengthening and scapular stabilization is effective for even small to medium full-thickness tears, particularly in moderately active patients willing to pursue conservative management first. Subacromial corticosteroid injection provides short-term pain relief during the inflammatory phase, facilitating rehabilitation. This approach is supported by current evidence showing that many full-thickness tears (especially < 3 cm) can be managed non-operatively with good functional outcomes in appropriately selected patients. ## Why each distractor is wrong - **Option 1 (Immediate arthroscopic repair)**: While arthroscopic repair is indicated for full-thickness tears in highly active patients < 65 years or after failure of conservative management, this patient is moderately active and has not yet exhausted conservative options. Immediate surgery is not the most appropriate first step given the patient's willingness to try physical therapy. - **Option 3 (Reverse total shoulder arthroplasty)**: Reverse arthroplasty is reserved for **irreparable** rotator cuff tears combined with arthritis ("rotator cuff arthropathy") in older patients. This patient has a repairable tear (2.5 cm is medium-sized) with only mild acromion sclerosis—not yet rotator cuff arthropathy—and is not a candidate for reverse arthroplasty at this stage. - **Option 4 (Observation alone)**: This is incorrect because it ignores the evidence-based management pathway. Patients with full-thickness tears benefit from active rehabilitation and pain control strategies; passive observation without intervention is not standard care and may lead to further deterioration. **High-Yield:** Supraspinatus tendon tears (marked **A**) follow Neer's Stage III; shared decision-making favors conservative management (PT + injection) for medium-sized tears in moderately active patients before considering surgery. [cite: Gray's Anatomy 42e Ch 49; Apley 10e; Neer's Classification of Subacromial Impingement]