Tendonitis usually goes away if the shoulder is given time to rest and heal. Later, activity can gradually be started again. Stretching exercises before and icing after any activity will help prevent tendonitis. For more severe or chronic cases, anti-inflammatory drugs or a cortisone injection may be needed.
In extreme cases, surgery may be recommended. This can be done using a small incision with specialized, minimally invasive surgical probe called an arthoscope (arthroscopic subacrominal decompression). During this surgery, the tears in the tendons are addressed.