Mapping of the anterior tibial profile to identify accurate reference points for sagittal alignment of tibial component in total knee arthroplasty

The orientation of sagittal tibial cut may be improved by aligning the extramedullary rod parallel to the ATP at definite points. Points placed at 50% of the tibial length and 5 mm proximal to the ankle joint may be preferred since they generate the longer axis parallel to the mechanical axis and are more easily identified at surgery.