Painful arc syndrome

Painful Arc Syndrome is a condition characterized by shoulder pain that occurs when lifting the arm between 60 and 120 degrees. It is often associated with shoulder impingement syndrome, where the tendons of the rotator cuff muscles become irritated and inflamed as they pass through the subacromial space, the passage beneath the acromion. This condition is also linked to subacromial bursitis, which involves inflammation of the bursa, a small fluid-filled sac that acts as a cushion between bones and tendons or muscles around a joint.

Causes

Painful Arc Syndrome is primarily caused by the impingement of the rotator cuff tendons in the shoulder. This impingement can result from various factors, including anatomical variations, overuse injuries, or degenerative changes in the shoulder joint. Activities that require repetitive overhead motion, such as painting, swimming, or lifting, can increase the risk of developing this syndrome.

Symptoms

The hallmark symptom of Painful Arc Syndrome is a sharp, stabbing pain in the shoulder when the arm is lifted sideways between 60 and 120 degrees. Other symptoms may include:

• Pain that worsens at night, especially when lying on the affected shoulder
• Weakness in the shoulder when lifting or rotating the arm
• A decrease in the range of motion of the shoulder
• A feeling of the shoulder giving way

Diagnosis

Diagnosis of Painful Arc Syndrome typically involves a physical examination and the patient's medical history. During the examination, the healthcare provider may perform specific tests to assess pain and range of motion in the shoulder. Imaging tests, such as X-rays or MRI, may also be used to rule out other conditions and to get a detailed view of the shoulder structure.

Treatment

Treatment for Painful Arc Syndrome focuses on relieving pain and restoring function to the shoulder. Initial treatment often includes:

• Rest and avoidance of activities that exacerbate pain
• Application of ice to reduce inflammation
• Nonsteroidal anti-inflammatory drugs (NSAIDs) to manage pain
• Physical therapy exercises to strengthen the shoulder muscles and improve flexibility

In cases where conservative treatments do not provide relief, corticosteroid injections or surgery may be considered. Surgery is typically reserved for severe cases and may involve procedures to remove inflamed tissue or repair torn tendons.

Prevention

Preventive measures for Painful Arc Syndrome include:

• Regularly performing exercises to strengthen the shoulder muscles
• Avoiding repetitive overhead activities
• Maintaining good posture to reduce strain on the shoulder
• Warming up properly before engaging in physical activity

See Also

• Rotator Cuff Tear
• Shoulder Impingement Syndrome
• Subacromial Bursitis
• Adhesive Capsulitis

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