The Effects of Different Walking Inclinations on Knee Angle in the Frontal Plane of Patients with Varus Malalignment

purpose: given the high prevalence of varus malalignment of the knee and the consequencesof walking on different surfaces on this malalignment, the aim of the present study was toinvestigate the effect of walking inclination on knee angle in the frontal plane of patients withvarus malalignment. methods: 18 male subjects with varus malalignment classified at grade 3 bowleg, within theage range of 19-24 years, volunteered to participate in this study. the parameters of knee anglein the frontal plane at the moments of heel contact, midstance and toe off when walking on-7.5, zero, +5 and +10 percent of treadmill inclination were calculated using three-dimensionalmotion analysis system with six optoelectronic cameras. repeated measures of variance andnon-parametric friedman test were used for data analysis. results: the results of the present study showed that as walking inclination increases, kneeangle in the frontal plane decreases. the only significant differences were related to varus anglebetween +10 and zero percent inclinations at the moment of midstance (p<0.001) and between-7.5 and zero percent inclinations at the moment of toe off (p<0.001) and in case of otherparameters, no significant differences were observed. conclusion: according to the obtained results, walking on upslope surfaces, probably is asuitable solution to reduce the load exerted on the knee and prevent premature osteoarthritis inyoung individuals with varus malalignment.