The Journal of Bone and Joint Surgery, Vol 58, Issue 7 952-960, Copyright © 1976 by Journal of Bone and Joint Surgery, Inc
Results of proximal tibial osteotomy. The effects of tibiofemoral angle, stance-phase flexion-extension, and medial-plateau force
DB Kettelkamp, DR Wenger, EY Chao and C Thompson
Forty-eight knees were evaluated after proximal tibial osteotomy, performed
for varus deformity to determine the desired amount of correction of the
deformity, the effect of osteotomy on knee motion during gait and one
medial-plateau force during standing, and the relationships between these
factors and the result. Correction of the tibiofemoral angle to 5 degrees
of genu valgum or more produced the best and most lasting results.
Stance-phase flexion-extension increased the rotation decreased in knees
with good results while the other gait parameters were not significantly
changed. Medial-plateau force was decreased by successful tibial osteotomy.
The knees with the best and most lasting results had 7 degrees of
stance-phase flexion-extension or more during walking and either a valgus
tibiofemoral angle of 5 degrees or more or a medial-plateau force of 50 per
cent of body weight or less.