Total knee arthroplasty in treatment of severe osteoarthritis with patella alta / 临床外科杂志

ABSTRACT

Objective To study the therapeutic effect of total knee arthroplasty(TKA)in treat-ment of severe osteoarthritis with patella alta.Methods TKA was performed on 13 patients of severe os-teoarthritis with patella alta,to adjust the relative position of the patella by changing the height of the plat-form line in the operation,and measure the length of the perpendicular line from the lowest point of the pa-tella joint surface to the tibial platform line before and after knee replacement,calculate and compare the ratio of the length to the joint surface of the patella(BP index).In addition,the score of the knee joint was evaluated by American special surgery hospital knee joint scoring system(HSS)at preoperative and post-operative three months.Results All the patients'incision got primary healing who were followed up with-out other complications.The BP index and the HSS score was statistically significant before and after sur-gery(P<0.05).Conclusion Total knee arthroplasty can be used to treat severe osteoarthritis with high patella by adjusting the relative height of the patella and correcting the limb alignment,to improve the function of knee joint and the quality of life.