Ogawa H, et al. - Researchers evaluated the change in coronal tibiofemoral (CTF) subluxation after high tibial osteotomy and determined demographic variables associated with CTF subluxation. They presumed the change in CTF subluxation to be related to the magnitude of correction of lower limb alignment and medial proximal tibial angle (MPTA). Findings suggested that osteotomy reduced CTF subluxation and it was associated with MPTA change. During surgical planning, postoperative MPTA ought to be considered and to reduce CTF subluxation by obtaining normal CTF congruency a postoperative MPTA of approximately 93.5° could be an appropriate target.