Rotator Cuff Tears to Shoulder Instability: The Relationship Between Acromial Morphology and Shoulder Pathology

The acromion is a well-studied region of the scapula that has demonstrated substantial relationships to various shoulder pathologies.Abnormal acromial morphology is associated with rotator cuff pathology, and our understanding of this risk factor inspired acromioplasty as an adjunctive treatment for rotator cuff tears.The acromion is linked closely to shoulder kinematics and biomechanics, as it serves as the origin for the deltoid muscle.In degenerative shoulder disease, eccentric glenohumeral osteoarthritis has been associated with a higher, flatter acromial roof.Increasing literature is emerging connecting morphology of the acromion with shoulder instability.