From: No patella resurfacing total knee arthroplasty leads to reduction in the thickness of patellar cartilage to less than half within 5 years: a quantitative longitudinal evaluation using MRI
Central facet
Medial facet
Lateral facet
P-value
Amount of change in cartilage thickness
1.57(0.63)
1.64 (0.82)
2.14 (0.83)
< 0.0001 a (Central vs Lateral < 0.0001 b, Medial vs Lateral 0.0005 b)