Biomechanical and radiological considerations for correction of varus deformity in primary osteoarthritis during total knee arthroplasty

Abstract

Background: Total knee arthroplasty (TKA) has proven to be a reliable method of treatment for osteoarthritis (OA). Restoration of lower limb alignment after TKA within ± 3° of neutral ensures equal load distribution on the medial and lateral compartments which is essential for implant longevity. This study describes biomechanical and radiological considerations for correction of varus deformity in primary osteoarthritis during TKA.Methods: This is a retrospective study from January 2017 to January 2019 done in Department of Orthopaedics, Grant Medical Foundation- Ruby Hall Clinic, Pune. A radiological study of 20 patients suffering from primary osteoarthritis of knee joint with varus deformity more than 15° who underwent Total Knee Arthroplasty was done. Xrays/Scanograms were evaluated pre operatively and immediate post replacement.