Abstract
1. The supraspinatus group of lesions constitutes one of the two common causes of the painful shoulder.
2. Most, but not all, of these lesions resolve either spontaneously or after conservative treatment.
3. When conservative treatment fails symptoms can be relieved by excision of the acromion process, provided that sufficient bone is removed to relieve all pressure on the tendon throughout a full range of shoulder movement.
4. Excision of the acromion is contra-indicated if there is doubt as to the diagnosis or if there is true limitation of shoulder movement.