title: Epidemiology of isolated acromioclavicular joint dislocation.
abstract: Background. Acromioclavicular (AC) joint dislocation is a common shoulder problem. However, information about the basic epidemiological features of this condition is scarce. The aim of this study is to analyze the epidemiology of isolated AC dislocation in an urban population. Materials and Methods. A retrospective database search was performed to identify all patients with an AC dislocation over a 5-year period. Gender, age, affected side and traumatic mechanism were taken into account. X-rays were reviewed by two of the authors and dislocations were classified according to the Rockwood's criteria. Results. A total of 108 patients, with a mean age of 37.5 years were diagnosed with AC dislocation. 105 (97.2%) had an isolated AC dislocation, and 3 (2.8%) were associated with a clavicle fracture. The estimated incidence was 1.8 per 10000 inhabitants per year and the male-female ratio was 8.5 : 1. 50.5% of all dislocations occurred in individuals between the ages of 20 and 39 years. The most common traumatic mechanism was sport injury and the most common type of dislocation was Rockwood type III. Conclusions. Age between 20 and 39 years and male sex represent significant demographic risk factors for AC dislocation.
authors: Department of Orthopaedics and Traumatology, Istituto Chirurgico Ortopedico Traumatologico (I.C.O.T.), Via Faggiana 1668, 04100 Latina, Italy.
authors: Claudio
authors: C
authors: Chillemi
authors: Vincenzo
authors: V
authors: Franceschini
authors: Luca
authors: L
authors: Dei Giudici
authors: Ambra
authors: A
authors: Alibardi
authors: Francesco
authors: F
authors: Salate Santone
authors: Luis J
authors: LJ
authors: Ramos Alday
authors: Marcello
authors: M
authors: Osimani