Risk of total knee replacement after proximal tibia fracture: a register-based study of 7,841 patients.

Background and purpose - Post-traumatic knee osteoarthritis following proximal tibia fracture (PTF) is a common complication that may lead to total knee replacement as secondary treatment (TKRS). We determined the risk of TKRS following PTF, whether treated nonoperatively or operatively, and compared the results with a 38-fold control group without prior PTF. Patients and methods - We identified all patients over 18 years of age in Finland with PTF treated during the period 2009-2018 from the Finnish Hospital Discharge Register (FHDR) and Finnish Arthroplasty Register (FAR).