Efficacy of Chemically Distinct Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) and Pain Phenotypes in Adhesive Capsulitis

Inclusion Criteria: 1. Being between 18-75 years of age 2. Having shoulder pain that has lasted for at least one month and being diagnosed with primary frozen shoulder 3. Having a VAS pain level ≥ 4/10 4. Having ≥30 degrees of range of motion restriction in at least two planes (flexion, abduction, or external rotation) 5. Not having any exclusion criteria and agreeing to participate in the study voluntarily Exclusion Criteria: 1. Patients with a history of shoulder trauma, those with musculoskeletal disorders characterized by pain and loss of function in the affected extremity (such as lateral epicondylitis, flexor tendon injury, de Quervein's tenosynovitis) 2. Presence of neurological involvement such as stroke, brachial plexus injury, Parkinson's disease, and cervical spine injury with or without radiculopathy 3. History of shoulder surgery, malignancy or tumor in the shoulder, those who have undergone shoulder manipulation 4. Presence of shoulder arthritis, rotator cuff tear or other shoulder injuries, thoracic outlet syndrome 5. Systemic disease affecting the shoulder region, severe degeneration or trauma (e.g., osteoarthritis, rheumatoid arthritis, history of labrum or articular cartilage injuries), inflammatory rheumatic diseases 6. Those who have received steroid injections into the affected extremity within the last 3 months, those using oral steroids or NSAIDs, those receiving any surgical or interventional treatment, or Planned individuals: 7. Those who are pregnant or lactating 8. Those with uncontrolled diabetes, heart failure, uncontrolled systemic disease (liver disease, chronic kidney failure, significant endocrine disorders, etc.) 9. Those with communication problems, severe psychiatric disorders 10. Those allergic to NSAIDs or with any contraindications 11. Those with bleeding, coagulation disorders, stomach ulcers, or symptomatic gastritis