The Changing Demographics of Knee Dislocation: A Retrospective Database Review

• DOI: 10.1007/s11999-013-3373-0
• Publication Date: 2013-11-08T12:49:08Z
• Authors: Gabriel A. Arom; Michael G. Yerano...; Frank A. Petrigliano; Rodney D. Terrell; David R. McAllister
• Keywords: Demographics; Knee Dislocation; Odds; Arthrofibrosis

Knee dislocations are uncommon but devastating orthopaedic injuries. Little is known about their frequency and the types of patients who affected.Using a large national insurance database, we determined (1) incidence knee dislocation in with injuries examined as function (2) year diagnosis, (3) type (open versus closed, direction), (4) patient demographic factors (sex, age).We searched PearlDiver database private records consisting 11 million diagnoses, using diagnosis (ICD-9-CM) codes for between years 2004 2009. The does not include Medicare, Medicaid, or uninsured patients. Patients were stratified by age, sex, diagnosis. Incidence was defined number events per 100 patient-years.We identified 8050 dislocations, representing an 0.072 patient-years Annual did increase during 6-year study period. Of 1333 (17%) open 6717 (83%) 0.060 closed 0.012 dislocations. most common direction unspecified other (65%), followed anterior (13%), lateral (11%), posterior (6%), medial (5%). sustaining 4172 (52%) female 3878 (48%) male. Males displayed increased risk compared to females (odds ratio = 1.09). mean age 35 years, inversely correlated (10-year odds 0.77).Our data suggest that might represent significantly larger burden among than previously thought. finding males have nearly equal enhances diagnosing physician's clinical suspicion this injury. Future prospective studies analyzing various causes could provide insight into changing demographics injury.Level IV, prognostic study. See Instructions Authors complete description levels evidence.