Table 3.

Proportion of postoperative FMA, TMA, and HKA phenotypes matching the contralateral, unaffected leg

Phenotype	Same phenotype in KA TKA and contralateral leg (%)	KA TKA phenotype was 1 more varus than contralateral leg (%)	KA TKA phenotype was 1 more valgus than contralateral leg (%)
Femoral mechanical angle (FMA)	81	6	13
Tibial mechanical angle (TMA)	73	11	16
Hip–knee–ankle angle (HKA)*	70	9	19

*2% of calipered KA TKA had a HKA phenotype that was 2 more varus and 2 more valgus that contralateral leg