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A-B Postoperative CT scan of a 57-year-old woman with osteoarthritis. (A) Measurement of axial rotation of the femoral component in relation to the transepicondylar axis (AA) and the posterior margin of the femoral component (BB). (B) Measurement of axial rotation of the tibial component in relation to the posterior margins of the medial and lateral tibial plateaus (AA) and one joining the posterior margins of the tibial component (BB).
