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Periarticular knee fractures present a significant challenge to minimize post-traumatic osteoarthritis. The purpose of this study is to compare the rates of conversion to total knee arthroplasty (TKA) for different periarticular knee fractures, investigate the rate of knee injections as a more rapid assessment of knee symptoms, and identify risk factors that lead to conversion to TKA following periarticular fractures.

A comprehensive retrospective review of the Humana administrative claims database was performed. A total of 2813 patients greater than 40 years of age with diagnosis code for tibial plateau fracture or distal femur fracture linked to a Current Procedural Terminology code of open reduction internal fixation between 2007 and 2011 were evaluated. The rates of TKA and knee injections within 5 years were compared. Cox proportional hazards model was used to evaluate risk factors for …