The effects of standard prosthesis total knee arthroplasty combined with compound release on joint space and HSS score in patients with severe osteoarthritis

SONG Lisheng

doi:10.3969/j.issn.1002-7386.2018.06.005

Abstract：Objective To investigate the effects of total knee arthroplasty combined with compound release on the joint space,knee joint mobility and HSS score of patients with severe osteoarthritis. Methods One hundred and twelve patients with severe osteoarthritis were randomly divided into standard prosthesis group and compound release group,with 56 patients in each group.The patients in standard prosthesis group were treated by knee arthroplasty,however,the patients in compound release group,on the basis of standard prosthesis group,were treated by knee joint compound release operation. The knee joint HSS scores including pain,function, activity,muscle strength,flexion deformity,stability and total score were observed after surgery,moreover,the knee extension gap,knee flexion gap,time of knee flexion 90°,time of knee flexion 120° were observed and compared between two groups. Moreover the postoperative effects including tibial angle before and after surgery,the maximum genuflex angle,squatting and fricative frequency were evaluated by means of Lysholm knee score. Results The knee extension gap in compound release group was significantly greater than that in standard prosthesis group, however,the time of knee flexion 90° and time of knee flexion 120° in compound release group were significantly shorter than those in standard prosthesis group (P<0.05). Moreover there was no significant difference in knee flexion gap between two groups (P>0.05). The pain,function, activity,muscle strength,flexion deformity,stability and total scores in compound release group were significantly higher than those in standard prosthesis group(P<0.05).After operation the tibial angle was less than that before treatment in both groups,however, the maximum genuflex angle was larger than that before treatment (P<0.05).However there were no significant differences in tibial angle and maximum genuflex angle after operation between the two groups (P>0.05).Besides the incidence rate of fricatives in compound release group was significantly lower than that in standard prosthesis group (P<0.05),and the squating rate was higher than that in standard prosthesis group,however, there was no significant difference between two groups ( P> 0.05). Finally, the therapeutic effects and excellent rate in compound release group were superior to those in standard prosthesis group ( P<0.05). Conclusion The total knee arthroplasty combined with compound release can significantly improve the pathological status and function of knee joint of patients with severe osteoarthritis,which can relieve knee joint pain,increase the activity and improve life quality of patients.