title: Radiological evaluation of the acromioclavicular joint.
abstract: X-ray measurement of the acromioclavicular (AC) joint may cause difficulties because of different projections and the lack of a reproducible measurement. In order to find the ideal measurement to estimate the state of the AC joint, 28 healthy adult volunteers were X-rayed. The least vulnerable measurement for errors in projection was the distance between the coracoid process and the upper part of the clavicle. The effect of stress was evaluated; the range of normal AC joint laxity was determined as 3 mm.
authors.affiliation: Department of Surgery, Kuopio University Central Hospital, Finland.
authors.forename: U
authors.initials: U
authors.lastname: Väätäinen
authors.forename: A
authors.initials: A
authors.lastname: Pirinen
authors.forename: A
authors.initials: A
authors.lastname: Mäkelä
mesh_terms: D000173:Acromioclavicular Joint / Q000000981:diagnostic imaging* / Q000502:physiology; D000174:Acromion / Q000000981:diagnostic imaging; D000293:Adolescent; D000328:Adult; D000886:Anthropometry; D002968:Clavicle / Q000000981:diagnostic imaging; D006801:Humans; D007593:Joint Instability / Q000503:physiopathology; D008722:Methods; D008875:Middle Aged; D011859:Radiography; D012540:Scapula / Q000000981:diagnostic imaging; D013314:Stress, Mechanical