Background
Aim
UKA is intended to be load sharing
- correct to neutral or slight varus
HTO is a load-shifting / load-sparing procedure
- over correct into valgus
UKA v TKR
Advantages UKA
1. Rapid rehabilation
UKA is intended to be load sharing
- correct to neutral or slight varus
HTO is a load-shifting / load-sparing procedure
- over correct into valgus
Advantages UKA
1. Rapid rehabilation
Trauma
RA
Rickets / osteomalacia
Horizontal joint line important
- < 10° tilt acceptable
> 10o joint line tilt / due to femoral valgus
- continues to overload lateral compartment