Malalignment of lower limb is a common feature in patients with osteoarthritis (OA). This, either cause or effect of OA, is known to alter the normal anatomy of knee and affects progression of wear and tear in mechanically stressed compartment. We investigated the relationship of mechanical axis to wear and tear in varus, neutral and valgus knees. A retrospective analysis of 136 consecutive patients, with OA, who underwent total knee replacement using computer navigation. The thickness of medial and lateral cuts of distal femur and proximal tibia were recorded. Pre-op coronal deformity was assessed using long leg radiographs and Femoral Tibial Mechanical Angle (FTMA) calculated. Patients were evaluated as one group and three subgroups based on preop varus, neutral or valgus lower limb alignment. Student t test and Pearson's correlation coefficient were used for statistical analysis.Introduction
Materials and Methods
