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Table 2 Bone mineral density (BMD, g/cm2) measured in the distal femur before (t = 0) and 12 months after (t = 12) patellofemoral arthroplasty.

From: Distal femoral bone mineral density decreases following patellofemoral arthroplasty: 1-year follow-up study of 14 patients

  BMD (t = 0) BMD (t = 12) Change from baseline 95% CI for the difference p-value
Operated knee      
   ROI 1 1.106 (0.229) 0.937 (0.362) -0.169 (0.204) -0.293 to -0.046 0.01
   ROI 2 0.981 (0.272) 0.905 (0.261) -0.076 (0.167) -0.177 to 0.024 0.13
Non-operated knee      
   ROI 1 1.099 (0.266) 1.115 (0.315) 0.016 (0.251) -0.152 to 0.185 0.83
   ROI 2 0.930 (0.175) 0.952 (0.266) 0.023 (0.234) -0.135 to 0.180 0.76
  1. Continuous values are given as the mean with standard deviation in parentheses.
  2. CI, confidence interval; ROI, region of interest.