Epidemiology of Primary Anterior Shoulder Dislocation Requiring Closed Reduction in Ontario, Canada

Abstract

Young male patients have the highest incidence of primary anterior shoulder dislocation requiring CR and the greatest risk of repeat shoulder CR. Patient, provider, and injury factors all influence repeat shoulder CR risk. A comprehensive understanding of the epidemiology of primary anterior shoulder dislocation will aid management decisions and injury prevention initiatives.

Current concepts in the management of recurrent anterior gleno-humeral joint instability with bone loss

“…A recent population-based study by Leroux et al [8] reported a 20% incidence of recurrent instability following a first time anterior shoulder dislocation in all adult patients. The highest risk group was young (< 20 years), male patients with an incidence density ratio of 98 per 100000 person-years.…”

Assessment of coincidence and defect sizes in Bankart and Hill–Sachs lesions after anterior shoulder dislocation: a radiological study

“…Results: The co-occurrence of injuries was high [odds ratio (OR) 5 11.47; 95% confidence interval (CI) A shoulder dislocation is a traumatic event with an incidence of around 24 per 100 000 in North America. 1,2 Anterior shoulder dislocation is the most common direction, and most patients are male. [1][2][3][4] The highest incidence (48 per 100 000) was found between the ages of 20 and 29 years.…”

Predictors for surgery in shoulder instability: a retrospective cohort study using the FEDS system

“…They found medical comorbidities, dislocation associated with humeral tuberosity fracture, and reduction performed by an orthopaedic surgeon to be protective for recurrent instability. 8 History of prior injury was a risk factor for future instability in a review of a young military population by Cameron et al 2 Specifically, patients with a selfreported history of glenohumeral instability were noted to be 5 times more likely to experience another instability event during the study time period.…”

“…There is still debate regarding the precise role of surgical treatment in this condition. While previous authors have analyzed risk factors for recurrent instability 2,8,15 and failure after shoulder stabilization surgery in this population, 1 there has been a lack of investigation regarding which variables are associated with surgery for shoulder instability in the first place. This study is novel in that it seeks to address this question in the framework of the FEDS classification system.…”

“…Predicting which patients will require surgical intervention for their shoulder instability is difficult. Although reports have analyzed risk factors for recurrent instability 2,8,15 and failure after instability surgery, 1 there is a paucity of data about what factors are associated with initial surgery in this patient population.…”