Observation Of The Effect Of Extracorporeal Shock Wave At Different Intervals Assisted Conventional Rehabilitation Therapy In The Treatment Of Knee Osteoarthritis

Objective: By comparing the effects of different intervals of extracorporeal shock wave assisted conventional rehabilitation of knee osteoarthritis,this study defines the best interval of extracorporeal shock wave in the treatment of knee osteoarthritis,and provides parameter basis for the treatment of knee osteoarthritis.Methods:Ninety-three patients with knee osteoarthritis who were admitted to our hospital’s sports medicine rehabilitation center and orthopaedic outpatient clinic from March2020 to March 2021 were selected,and the patients were divided into ABC groups by random number table method,with 31 cases in each group.All three groups received conventional rehabilitation therapy combined with extracorporeal shock wave therapy,with4 times of uninterrupted treatment;patients in group A used shock waves interval 6 days;patients in group B used shock waves interval 3 days;patients in group C used shock waves interval 1 days.Physical activity pain visual analogue score(VAS),WOMAC osteoarthritis index(The Western Ontario and Mc Master Universities,WOMAC),five-times-sit-to-stand test(5-times-sit-to-stand test,FTSST)to analyze and compare the curative effect of each group of patients with knee osteoarthritis.The three groups of patients were evaluated by professional evaluators who did not know the grouping status before treatment and 1 month after the first treatment.The VAS score,WOMAC osteoarthritis index and FTSST score of the three groups of patients before and one month after the first treatment were obtained,and the pain of the patients and functional status of the patients were compared.Results:(1)Ninety-three patients with knee osteoarthritis who met the inclusion criteria were selected as the research subjects.Among them,4 patients did not complete the entire treatment cycle and follow-up due to various reasons,and the loss to follow-up rate was4.3%.The remaining 89 patients completed the entire rehabilitation cycle and follow-up.(2)Before treatment,there were 31 patients in group A,including 12 males and 19 females,with an average age of 63.42±5.26 years old and an average BMI of 25.61±1.71;there were 30 patients in group B,including 13 males and 17 females,with an average age of 64.63±4.43 years old and an average BMI of 25.26±1.99;there were 28 patients in group C,including14 males and 14 females,with an average age of 62.92±5.87 years old and an average BMI of 25.71±1.99.There was no significant difference in general clinical data(P>0.05).(3)Before treatment,the patients in the three groups were compared by one-way analysis of variance VAS score(F=0.054,P=0.947),WOMAC osteoarthritis index score(F=0.158,P=0.853),FTSST score(F=0.043,P= 0.958),the difference was not statistically significant(P>0.05).(4)Comparing the three groups before and after treatment by paired t test,it was found that the VAS score of group A(t=21.890,P<0.01),group B(t=15.200,P<0.01),group C(t=11.362,P<0.01),WOMAC osteoarthritis index score group A(t=14.658,P<0.01),group B(t=12.675,P<0.01),group C(t=9.171,P<0.01),FTSST score group A(t=13.864,P<0.01),group B(t=10.210,P<0.01),group C(t=7.164,P<0.01),there were differences in the VAS score,WOMAC osteoarthritis index score and FTSST score before and after treatment among the three groups statistical significance(P<0.05).(5)One month after the first treatment,the comparison among the three groups was performed by one-way analysis of variance VAS score(F=14.407,P<0.001),WOMAC osteoarthritis index score(F=14.424,P=0.001),FTSST score(F=14.909,P<0.001),the difference was statistically significant(P<0.05).Pairwise comparison found that the VAS score of group A was compared with group B(P=0.003),group A was compared with group C(P<0.001),and group B was compared with group C(P=0.025),and the difference was statistically significant(P<0.05).The WOMAC osteoarthritis index scores were compared between group A and group B(P=0.002),group A and group C(P<0.001),and group B and group C(P=0.03),and the difference was statistically significant(P<0.05).The FTSST scores were compared between group A and group B(P=0.002),group A and group C(P<0.001),and group B and group C(P=0.022),and the differences were statistically significant(P<0.05).Conclusion: Extracorporeal shock wave assisted conventional rehabilitation therapy for patients with knee osteoarthritis can relieve pain,improve knee joint dysfunction,and improve lower extremity motor function.Extracorporeal shock wave at different time intervals assisted conventional rehabilitation therapy can reduce pain score,osteoarthritis index and five times sit-to-stand test score 1 month after the first treatment.From the analysis of the test results 1 month after the first treatment,the effect of extracorporeal shock wave assisted conventional rehabilitation in the treatment of knee osteoarthritis was the best when the interval was 6 days.The long-term efficacy of extracorporeal shock waves at different intervals in the treatment of knee osteoarthritis remains to be further observed.