Abstract
We have experienced in 7 cases, 9 knees with total replacements after high tibial osteotomy. Deformity of the proximal tibia caused by the high tibial osteotomy seemed to have made the total knee arthroplasty procedure more difficult. Some of the wedge osteotomies might have reduced the bone stock of the proxial tibia, and the oblique rotation osteotomy made a rotational deformity of the lower leg. Furthermore, a central peg type tibial component may not be acceptable because of deformities of the proximal tibia caused by the anterior displacement of the tibial tuberosity.
The degree of deformity of the proxial tibia with arch osteotomies was surveyed in our series and biomechanically investigated with a rigid body spring model. As a result, the knee with overcorrected high tibial osteotomy was found to be unsuitable for future total knee replacement.
