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Common Conditions

Painful Arc Impingement Syndrome

25/09/2020

Supraspinatus Tendinitis also known as Painful Arc Impingement Syndrome is a common cause of shoulder pain. It is also known as impingement syndrome or Swimmer’s Shoulder since it is so common in swimmers.

Painful Arc Impingement Syndrime occurs when there is impingement of tendons or bursa in the shoulder from bones of the shoulder. The rotator cuff is a group of muscles and tendons that attach the upper arm bone to the shoulder. They help lift and rotate the arm. The rotator cuff sits under the top of the shoulder, which is called the acromion. When having shoulder impingement, the rotator cuff catches or rubs against the acromion. When lifting the arm, the space (bursa) between the rotator cuff and acromion narrows which increases pressure. The increased pressure irritates the rotator cuff leading to impingement. Many cases of shoulder impingement are caused by overuse. Repeated use of the shoulder can make the tendons in the shoulder swell, leading them to “catch” on the upper shoulder bone.

The typical symptoms of impingement syndrome include difficulty reaching up behind the back, pain with overhead use of the arm and weakness of shoulder muscles. If tendons are injured for a long period of time, the tendon can actually tear in two, resulting in a rotator cuff tear. This causes significant weakness and may make it difficult for the person to elevate his or her arm. Some people can have rupture of their biceps muscle as part of this continuing impingement process.

It is important to get proper treatment for shoulder impingement as soon as it occurs. Secondary conditions can result from the impingement of the tissues in the shoulder, including irritation of the bursa and rotator-cuff tendinitis or tears. Physical therapy can be very successful in treating painful arc shoulder impingement syndrome. When treating painful arc, your therapist will help identify painful movements and correct abnormal postures to reduce impingement compression. Manual therapy, ice therapy and therapeutic modalities will be incorporated during treatment to reduce pain. Strengthening exercises and shoulder stretches will be prescribed to get the shoulder moving properly so that the tendons and bursa will avoid impingement. As symptoms improve, you will be taught how to correctly perform a range of motions using proper shoulder mechanics to allow pain-free function of the shoulder. If in doubt, seek professional advice.