Impingement syndrome is a common condition affecting the rotator cuff tendons, causing shoulder pain. This problem can develop in people who participate in activities that require repetitive overhead arm movements, such as swimming, tennis, throwing, and weight lifting. Such movements can cause the rotator cuff to contact the outer end of the shoulder blade where the collarbone attaches called the acromion. When this occurs, the rotator cuff becomes inflamed and swollen, a condition called tendonitis. The swollen rotator cuff can then rub against the acromion, causing pain. The bursa, a fluid- filled sac between the bone and tendon, also becomes inflamed, a condition known as bursitis.

Symptoms of impingement syndrome generally involve pain from the top of the shoulder into the upper arm. Pain is generally worse at night, especially when lying on the involved side. Over time, if untreated, weakness and loss of motion may occur. Eventually, the rotator cuff may tear.

Treatment begins with rest, ice, and anti-inflammatory medications. Physical therapy is generally beneficial. Cortico-steriod injections may also be very helpful to reduce swelling and pain. Arthroscopic surgical treatment may be necessary if symptoms do not improve.

Seek consultation with an orthopaedic physician if shoulder pain persists. Most patients will respond to non-operative methods followed by a regimen of stretching and strengthening.