Measurement and Analysis of Lower Limb Mechanics Related Parameters in Patients with Knee Osteoarthritis in Weight-Bearing Position
Objective:To measure the lower limb mechanics related parameters of patients with knee osteoarthritis(KOA)and observe its change rule,in order to provide reference for the implementation of traditional Chinese medicine(TCM)bone-setting manipulation.Methods:From March 2022 to November 2023,333 patients with KOA who underwent full-length X-ray examination of both lower limbs in weight-bearing position were enrolled.The hip-knee-ankle angle(HKA),lateral proximal femoral angle(LPFA),mechanical lateral distal femoral angle(mLDFA),mechanical medial proximal tib-ial angle(mMPTA),mechanical lateral distal tibial angle(mLDTA),tibial-femoral joint line convergence angle(JLCA),femoral anatomical mechanical axis angle(AMA)and mec-hanical axis deviation distance(MAD)were measured.For each patient,the side with severe pain was defined as the affected side,and the side with mild pain or no symptoms was defined as the contralateral side.The above parameters were compared between the affected side and the contralater-al side,and the parameters of both sides were compared with those of the healthy people to observe their changes.Results:In all KOA patients,there were statistically significant differ-ences in HKA between the affected and contralateral groups(P＜0.05).HKA and other aspects of the two groups devia-ted from the normal reference range(P＜0.05).In the subgroup analysis,there were significant differences in HKA between the affected side and the contralateral side in the varus group,the valgus group,and the neutral position group(P＜0.05).The HKA of the contralateral knee in the varus group deviated from the normal reference value(P＜0.05).Subgroup analysis showed that there was no significant difference in LPFA and mLDTA between the affected side and the contralateral side in the varus group(P＞0.05).Conclusion:The mechanical parameters of lower limbs in KOA patients deviate from the normal reference value,and the deviation of the affected side is often greater than that of the contralateral side.Knee varus and neutral position are the main manifestations.The anatomy of the lower limb alignment is different in the varus,valgus,and neutral positions of the knee.The analysis results suggest that the femur and tibia rotation of the affected limb often exist in KOA patients,suggesting that the key point of manual treatment can be focused on the reduc-tion of lower limb rotation.Fully understanding the lower limb mechanics of KOA patients is helpful for accurate and rea-sonable use of traditional Chinese medical tendon bone setting techniques.
万方数据
维普
