Painful Arc Syndrome – Causes, Symptoms, Diagnosis & Best Treatments : By Dr. Balaraju Naidu, Robotic Orthopedic Surgeon
What Is Painful Arc Syndrome?
Painful Arc Syndrome is a shoulder condition where pain occurs only within a specific range of arm elevation — typically between 60° and 120°. The pain appears during active movement and reduces when lowering the arm. This classic pattern helps differentiate it from other types of shoulder pain.
Why Does the Pain Occur?
The shoulder has a narrow space called the subacromial space. When you lift your arm, the rotator cuff tendons and the subacromial bursa pass through this space.
If these structures are inflamed, swollen, or irritated, they get pinched — leading to sharp pain in the mid-range of arm movement.
Common Causes
1. Rotator Cuff Tendinitis
Inflammation of the supraspinatus tendon is the most common cause.
2. Shoulder Impingement Syndrome
Repetitive overhead work or sports reduces subacromial space.
3. Subacromial Bursitis
The bursa becomes irritated, increasing friction during movement.
4. AC Joint Arthritis
Bone spurs reduce movement space.
5. Rotator Cuff Tears
Partial tears can cause painful arc patterns.
Symptoms of Painful Arc Syndrome
- Pain only in a specific arc (60–120 degrees)
- Pain while lifting the arm sideways or overhead
- Difficulty doing hair, dressing, or overhead tasks
- Weakness in shoulder
- Pain while sleeping on affected shoulder
How Is It Diagnosed?
✔ Clinical Tests
The doctor asks you to raise your arm sideways. If pain occurs only within the mid-range, the painful arc test is positive.
✔ Imaging
- X-ray – to identify bone spurs
- Ultrasound – tendon swelling or tears
- MRI – detailed rotator cuff evaluation
Treatment Options
⭐ 1. Rest & Activity Modification
Avoid overhead movements, heavy lifting, and repetitive activities.
⭐ 2. Medications
NSAIDs help reduce pain and inflammation.
⭐ 3. Ice Packs
Apply for 15–20 minutes, 2–3 times a day.
⭐ 4. Physiotherapy
Most effective and long-term solution:
- Rotator cuff strengthening
- Scapular stabilisation exercises
- Pendulum exercises
- Shoulder mobility work
⭐ 5. Corticosteroid Injection
Useful for severe inflammation or bursitis.
⭐ 6. Shockwave / Ultrasound Therapy
Helps reduce inflammation and improve healing.
⭐ 7. Surgery (rare cases)
Arthroscopic subacromial decompression is recommended if symptoms persist for more than 3–6 months despite physiotherapy.
Can It Be Prevented?
Yes!
- Warm up before workouts
- Strengthen rotator cuff muscles
- Maintain posture
- Avoid repetitive overhead tasks
- Take breaks during sports or work
When to See a Doctor?
Seek evaluation if:
✔ Pain persists for more than 2 weeks
✔ Pain disturbs sleep
✔ You feel weakness or stiffness
✔ Shoulder movements are restricted
Painful Arc Syndrome is one of the most common and treatable shoulder conditions. With early diagnosis, physiotherapy, and lifestyle modifications, most people recover without surgery. If you experience shoulder pain while lifting your arm, consult an orthopedic specialist at ONUS Robotic Hospitals for accurate diagnosis and advanced treatment.
📞 For Appointments:
ONUS Robotic Hospitals – Hyderabad
