From: Clinical and radiological results of cruciate-retaining total knee arthroplasty with the NexGen®-CR system: comparison of patellar resurfacing versus retention with more than 14 years of follow-up
Radiology
Zone (patellar resurfacing/patellar nonresurfacing)
Incidence
1
2
3
4
5
6
7
Femur lateral
0/0
0
Tibia AP
2/3
1/1
3/4
Tibia lateral