title: Arthroscopic excision of unstable os acromiale associated with impingement syndrome: a case report.
abstract: Os acromiale is a rare anatomical variant that is caused by failure of fusion of the acromial apophysis and is usually asymptomatic. We report a case of impingement syndrome of the left shoulder secondary to unstable os acromiale, which was initially overlooked and confirmed only during arthroscopic examination. Arthroscopic excision of the unstable fragment was successful without residual dysfunction of the deltoid muscle.
authors.affiliation: Department of Orthopedics, Tokushima University.
authors.forename: Shinji
authors.initials: S
authors.lastname: Kawaguchi
authors.forename: Shoji
authors.initials: S
authors.lastname: Fukuta
authors.forename: Takahiko
authors.initials: T
authors.lastname: Tsutsui
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Matsuura
authors.forename: Naoto
authors.initials: N
authors.lastname: Suzue
authors.forename: Daisuke
authors.initials: D
authors.lastname: Hamada
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Goto
authors.forename: Ryo
authors.initials: R
authors.lastname: Miyagi
authors.forename: Keizo
authors.initials: K
authors.lastname: Wada
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Kita
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Tamaki
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Matsumura
authors.forename: Akihiro
authors.initials: A
authors.lastname: Nagamachi
authors.forename: Koichi
authors.initials: K
authors.lastname: Sairyo
mesh_terms: D000174:Acromion / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D000368:Aged; D001182:Arthroscopy; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D019534:Shoulder Impingement Syndrome / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D014057:Tomography, X-Ray Computed