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This figure illustrates long-leg radiographs of a patient with constitutional bilateral valgus limbs. Regarding the right knee, LDFA is 11° valgus and MPTA 6° varus. Resultant HKA is not extreme, but the joint line orientation has a pronounced obliquity (‘Type 3’ knee). In this case, the surgeon felt uncomfortable to reproduce the patient’s anatomy and reduced the joint line obliquity.
Note. LDFA, lateral distal femoral angle; MPTA, medial proximal tibial angle; HKA, hip-knee-ankle.
