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Table 5 Comparisons of the preoperative and 5-year postoperative patellar cartilage thickness and percentage cartilage thickness

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

  Preoperative 5-year postoperative P-value
Thickness % thickness Thickness % thickness Thickness % thickness
Central facet 2.87 (0.74) 100 1.30 (0.41) 46.3 (12.3) < 0.0001 < 0.0001
Medial facet 3.03 (0.86) 100 1.38 (0.39) 49.1 (17.8) < 0.0001 < 0.0001
Lateral facet 3.44 (0.92) 100 1.29 (0.39) 39.3 (12.9) < 0.0001 < 0.0001
  1. Data are reported as the mean (standard deviation), unless otherwise indicated. Bolded P-values indicate statistical significance (P < .05)
  2. Significance levels with Student’s t-test