Coronal tibiofemoral subluxation is not an independent risk factor for total knee arthroplasty in patients with moderate to severe varus-osteoarthritis: data from the "Osteoarthritis Initiative".

Purpose: Only few prognostic factors for progression of knee osteoarthritis are well established, including varus malalignment. The purpose of this study was to evaluate whether coronal tibiofemoral subluxation is a predictor for total knee arthroplasty.

Methods: Patients from the progression subcohort of the longitudinal database "Osteoarthritis Initiative" with moderate to severe osteoarthritis and varus malalignment of greater than 3 degrees were included.