title: Prevalence of osteophytes associated with the acromion and acromioclavicular joint.
abstract: Osteophytes as a stigma for shoulder impingement syndrome and osteoarthritis of the acromioclavicular (AC) joint were studied on the acromions and AC joints in 346 skeletons (230 males; 116 females), ranging in age from 15-100 years. Osteophytes were found on 28.9% (200/692) of the acromions, mostly on the anteroinferior aspect (54%; 108/200). Of these 28.9%, 87% (174/200) were of the traction type and 13% (26/200) of the claw type. Regarding the clavicles, 11.6% (80/692) had osteophytes on the articular facets of their lateral ends; all were of the traction type. There were statistically more osteophytes on the right than on the left side of both acromion and clavicle (P < 0.05). The occurrence of osteophytes and increasing age were significantly correlated (r = 0.65, P < 0.001). No gender differences were noted in the frequency of osteophytes on acromions or clavicles. These data should prove beneficial to clinicians in planning a proper course of treatment for patients suffering from painful conditions of the shoulder.
authors.affiliation: Department of Anatomy, Faculty of Medicine, Chiangmai University, Chiangmai, Thailand. pmanhanka@mail.med.cmu.ac.th
authors.forename: Pasuk
authors.initials: P
authors.lastname: Mahakkanukrauh
authors.forename: Patcharin
authors.initials: P
authors.lastname: Surin
mesh_terms: D000173:Acromioclavicular Joint / Q000473:pathology*; D000174:Acromion / Q000473:pathology*; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*; D015995:Prevalence; D019534:Shoulder Impingement Syndrome / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*