title: Ultrasonographic Diagnosis of Non-displaced Avulsion Fracture of the Acromion: A Case Report.
abstract: Avulsion fracture of the acromion is rare. It is difficult to diagnosis because there is little displacement and it occurs even without direct trauma. We experienced a case without direct trauma that was diagnosed with ultrasonography. A 55-year-old male patient visited our outpatient clinic with shoulder pain resulting from a significant stress at the trapezius muscle during lifting of a steel reinforcement. Simple radiography revealed a calcific deposit over the acromion rather than a fracture. Avulsion fracture was identified with ultrasonography. This is the first report demonstrating that ultrasonography has an advantage over radiographs in the diagnosis of an avulsion fracture of the acromion of the scapula.
authors.affiliation: Department of Rehabilitation Medicine, Maryknoll Medical Center, Busan, Korea.
authors.forename: Chang Han
authors.initials: CH
authors.lastname: Lee
authors.affiliation: Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Young-Ah
authors.initials: YA
authors.lastname: Choi
authors.affiliation: Department of Rehabilitation Medicine, Seoul National University Boramae Medical Center, Seoul, Korea.
authors.forename: Shi-Uk
authors.initials: SU
authors.lastname: Lee
keywords: Acromion; Bone fractures; Ultrasonography