2012 Volume 61 Issue 3 Pages 369-372
Whether or not to resurface the patella during total knee arthroplasty remains controversial. The purpose of this study was to review patellofemoral osteoarthritis in patients who had undergone total knee arthroplasty (TKA) without patella resurfacing. Sixty-one patients (100 knees) underwent primary TKA for osteoarthritis with NexGen or Scorpio. We analyzed the associations between lateral tilt, lateral shift ratio, and patella height based on the X-ray findings of the knee. We assessed the exacerbation of patellofemoral ostoarthritis measuring presence or absence of the osteosclerosis, osteophyte, and joint space narrowing. We found that the lateral tilt of Scorpio was significantly smaller than that of Nexgen(p<0.05), and the osteosclerosis was significantly worse in Scorpio than that in Nexgen (p<0.05), We also found that patellofemoral ostoarthritis was significantly worse in Scorpio with radial patellar groove of the femoral component.
