Radiographic changes of patella after non-resurfaced total knee arthroplasty / 中国矫形外科杂志

ABSTRACT

[Objective] To investigate the radiographic changes of patella after total knee arthroplasty(TKA)with non-resurfaced patellar.[Methods]Fifty-one patients(64 knees)underwent TKA with patellar non-resurfaced.Average age was 68.5 years(range,57~78 years).Average follow-up was 4.8 years(range,2.5~8 years).The radiographic changes of patella,patellar tilt,and patellar lateral shift were evaluated.The functional results of patellofemoral joint were analyzed.[Results]The patellar tilt and lateral shift were improved obviously after surgery.Most patella tracking lied in the middle and there were no obvious degeneration with the time passing.Osteophytes formation and deterioration of patellar tracking were the most common abnormal radiographic changes.There were no obvious relationship between symptoms of patellofemoral joint and patellar degeneration.[Conclusion]Patellar tracking can be improved immediately after non-resurfaced total knee arthroplasty in osteoarthritis patients.There will not be obvious patellar degenerative changes with time passing.