title: The comma sign: An arthroscopic guide to the torn subscapularis tendon.
abstract: Subscapularis tears are becoming increasingly recognized as a cause of shoulder pain and disability. However, identifying the subscapularis tendon stump is often difficult during repair of chronic, retracted subscapularis tears that are scarred to the deltoid fascia. The authors have found the "comma sign," an arc formed by a portion of the superior glenohumeral ligament/coracohumeral ligament complex, to be a useful marker of the superolateral corner of the torn subscapularis tendon.
authors.affiliation: San Antonio Orthopaedic Group, Department of Orthopaedic Surgery, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA.
authors.forename: Ian K Y
authors.initials: IK
authors.lastname: Lo
authors.forename: Stephen S
authors.initials: SS
authors.lastname: Burkhart
mesh_terms: D001182:Arthroscopy; D006801:Humans; D006811:Humerus / Q000473:pathology; D008023:Ligaments, Articular / Q000293:injuries / Q000473:pathology*; D017006:Rotator Cuff / Q000473:pathology / Q000601:surgery; D000070636:Rotator Cuff Injuries; D014947:Wounds and Injuries / Q000175:diagnosis