Acromial Apophysiolysis: Superior Shoulder Pain and Acromial Nonfusion in the Young Throwing Athlete

Abstract

Acromial apophysiolysis is characterized by incomplete fusion and edema at the acromial apophyses. It is associated with superior shoulder pain in young patients (< 25 years old), and pitching is a risk factor. It predisposes the patient to the development of an os acromiale and rotator cuff tears after age 25 years.