| Knee osteoarthritis(KOA)is a common degenerative,deformable,disabling joint disease in the elderly.Dynamic knee valgus and decreased knee stability are the main causes of pain and dysfunction.Weight-bearing activities are more common in daily life,but their effects on dynamic knee valgus angle and lower limb stability in KOA patients are not clear.Objective: To investigate the effects of different degrees of weight on the dynamic knee valgus angle and lower limb stability of healthy knee and KOA patients during squatting.Provide theoretical basis for the rehabilitation of KOA and provide guiding suggestions for improving the quality of daily life of KOA patients.Research methods: 19 patients with KOA were enrolled in the experimental group,and 15 healthy elderly patients were in the control group.All subjects underwent a dynamic knee valgus angle test and a Y-test test at a load of 0% BW,a load of 5% BW,and a load of 15% BW,respectively.The dynamic knee valgus angle and the Y-test test comprehensive score under three different load-bearing states were collected and analyzed.Results:(1)Dynamic knee valgus angle: The dynamic knee valgus angle was the smallest under the load of 0% BW load in the control group;the dynamic knee valgus angle was 0% BW load compared to the load under 5% BW load.The state change was not obvious;under the load of 15% BW load,the dynamic knee valgus angle increased but there was no significant difference(p>0.05)from the load weight 0% BW load state.In the experimental group,under the load of 5% BW load,the dynamic knee valgus angle of the experimental group decreased,compared with the load of 0% BW load(p<0.05);under the load of 15% BW,the experimental group The dynamic knee valgus angle increased,and there was a significant difference(p<0.05)under the relative load of 0% BW.In the experimental group,there was a significant difference(p<0.05)between the load of 0% BW load,the load of 5% BW load and the load of 15% BW compared with the control group under the same load condition.(2)Y-test test comprehensive score: the average comprehensive score of the experimental group with the load of 5% BW load was the highest(78.5±6.5),and the score was significantly different from the load of 0% BW load(p<0.05);The composite score under the load state of %BW was the lowest(66.9±7.2),and the score was significantly different from the load of 0%(p<0.05).In the Y-test test,the comprehensive score of the load under0% BW load was lower than that of the control group,and there was a significantdifference(p<0.05).The comprehensive score was the highest under the load of 5% BW load.(93.9±5.0),and the score was significantly different from the weight-bearing 0%BW load state(p<0.05),which was lower than the control group load 5% BW load state,and there was significant difference(p<0.05),load weight 15 The %BW load status had the lowest comprehensive score(83.5±5.1),and the score was significantly different from the load of 0% BW load,which was lower than that of the control group with 15%BW load,and there was significant difference(p<0.05).).Analysis conclusion:1.During the single-leg squat,the dynamic knee valgus angle increased with the increase of negative weight in the healthy group,and the negative weight had no significant effect on the degree of dynamic knee valgus.As the negative weight increased,the stability of the lower limbs in the healthy group changed from strong to weak.2.During the single-leg squat,KOA patients had a greater dynamic knee valgus angle and poorer lower limb stability than healthy individuals.3.During the single-leg squatting process,the weight-bearing effect has a significant effect on the dynamic knee valgus angle of KOA patients,and the load-bearing load becomes larger(0%,5%,15%).The dynamic knee valgus angle of KOA patients decreases first and then increases..4.Appropriate weight-bearing will increase the stability of lower limbs in patients with KOA.Overloading will reduce the stability of lower limbs. |
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