Proximal tibia vara involves the medial shift of the tibial articular surface.
Makoto KawasakiRyuji NagamineWeijia ChenYuan MaAkinori SakaiToru SuguroPublished in: Journal of orthopaedic surgery (Hong Kong) (2020)
In varus knees, the proximal tibia has a medial shift of the TAS that may influence the value of the HKA angle.