The epidemiology of shoulder dislocations in Oslo

S Liavaag,J I Brox,A H Pripp,S Svenningsen,M Enger,O Reikerås,T Fjalestad

doi:10.1111/j.1600-0838.2011.01300.x

Abstract

There are few previous studies on the incidence of shoulder dislocation in the general population. The aim of the study was to report the incidence of acute shoulder dislocations in the capital of Norway (Oslo) in 2009. Patients of all ages living in Oslo, sustaining a dislocation of the glenohumeral joint, were identified using electronic diagnosis registers, patient protocols, radiological registers of the hospitals, and the Norwegian Patient Register (NPR). The overall incidence rate was 56.3 [95% confidence interval (CI) 50.2–62.4] per 100 000 person-years, with rates of 82.2 (95% CI 71.7–92.8) and 30.9 (95% CI 24.5–37.3) in men and women, respectively. The incidence of primary dislocations was 26.2 (95% CI 22.1–30.4). The overall incidence of shoulder dislocations in Oslo was higher than previously reported incidences. The incidence of primary dislocations was also higher than that in previously reported studies for the general population but it was close to the incidence reported in Malmø, Sweden.

Highlights

62.4] per 100 000 person-years, with rates of 82.2 and 30.9 in men and women, respectively
Limited to the first annual occurrence for each patient, 324 patients living in Oslo were recorded with an acute shoulder dislocation in 2009; 279 of the patients (86.1%) were treated at the largest outpatient clinic (OLV)
The overall incidence in the present study was 56.3, and the incidence of confirmed primary dislocations was 26.2

Summary

Introduction

62.4] per 100 000 person-years, with rates of 82.2 (95% CI 71.7–92.8) and 30.9 (95% CI 24.5–37.3) in men and women, respectively. The few previous studies on the incidence of shoulder dislocation in the general population report incidences ranging from 11.2 to 23.9 per 100 000 person-years (Simonet et al, 1984; Kroner et al, 1989; Nordqvist & Petersson, 1995; Zacchilli & Owens, 2010). In Malmø, Sweden, the incidence of primary dislocations was reported to be 23.9 per 100 000 person-years, which is equal to the estimated overall incidence rate of shoulder dislocation in the United States reported in 2010 (Nordqvist & Petersson, 1995; Zacchilli & Owens, 2010). E334 able from a public medical electronic database to see whether the results are consistent or not

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Conclusion