Knee Instability Before and After High Tibial Osteotomy

Abstract

Knee joints were examined by three-point measurement (Edholm et al. 1976(Edholm et al. , 1977. The instability in arthrotic joints did not differ significantly from that in normal knees, but the varus/valgus deviation as measured by the three-point technique differed significantly from that in normal knees. After high tibial osteotomy for varus malalignment the instability increased significantly. An increase of more than 2' was associated with significantly poorer subjective results of operation. The findings indicate that shortening of the lateral stabilizing structures of the knee joint should be carried out in connection with high tibial osteotomy for varus malalignment. No upper limit of preoperative instability consistent with a good result of operation was established.

Proximal osteotomy of the tibia in the treatment of osteoarthritis of the knee

“…However, other views have also been put forward (Myrnerts 1980b). In the present series the operative results in 5 knees preoperatively considered instable did not differ from the results in the whole series.…”

Optimal Correction in High Tibial Osteotomy for Varus Deformity

“…As an increase in the instability in connection with the operation has proved to be detrimental to the end result (Mymerts 1980b) it is recommended that a lateral capsule reconstruction should be performed at the same time as the tibial osteotomy.…”