Abstract
Objective To investigate the elderly knee osteoarthritis high-flexion total knee prosthesis re-placement therapy clinical efficacy .Methods 68 patients（68 knees） were randomly divided into two groups in ac-cordance with the order of treatment ,each group was treated with high flexion total knee prosthesis replacement therapy＆amp;nbsp;and the general treatment of posterior stabilized prosthesis ,compared before and after surgery in March and after a in HSS,WOMAC knee function , maximum knee flexion and knee activity before the pain incidence .Results Two groups of patients HSS and WOMAC after treatment ,3 months,1 year compared with before treatment ,the differences were statistically significant（t=6.28,7.36,all P〈0.05）,the control group after treatment,3 months and 1 year compared with before treatment,there was statistically significant（t=5.23,7.35,all P〈0.05）;HSS in observation group after 1 year compared with the control group ,the difference was statistically significant （t=4.69,P〈0.05）, WOMAC after 3 months compared with the control group,the difference was statistically significant （t =6.49,P〈0.05）;Two groups of patients knee activity after treatment ,3 months,1 year compared with before treatment , the differences were statistically significant （t=5.24,4.66,all P〈0.05）,the control group after treatment ,3 months and 1 year compared with before treatment ,the differences were statistically significant （t=5.81,4.64,all P〈0.05）;ob-servation group after 1 year maximum flexion and range of motion and control group ,the difference were statistically significant（t=6.64,5.33,all P〈0.05）.The incidence of postoperative anterior knee pain of observation group and control were 2.94%,14.71%,there was statistically significant difference （χ2 =5.23,P〈0.05）.Conclusion Eld-erly high flexion knee osteoarthritis total knee prosthesis replacement therapy can improve long -term postoperative knee function and range of motion ,which also can reduce knee pain occur . Key words: Osteoarthritis; knee; Knee prosthesis; Aged
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