Scott BL, et al. - This study was sought to correlate the rates of conversion to total knee arthroplasty (TKA) for different periarticular knee fractures, evaluate the rate of knee injections as a more rapid assessment of knee symptoms, and distinguish risk factors that lead to conversion to TKA following periarticular fractures. Researchers conducted a comprehensive retrospective review of the Humana administrative claims database. Between 2007 and 2011, researchers investigated a total of 2,813 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. Using Cox proportional hazards model, risk factors for conversion were evaluated. The data reveal that the rate of conversion to TKA for periarticular knee fractures overall was 3.3%, while the rate of knee injections within 5 years of surgery was 12.8%, implying a not insignificant minority of individuals need treatment for symptomatic knee pain.