Parameter | Normal bone | Osteopenic bone | Osteoporotic bone | Differences between groups for parameter |
---|---|---|---|---|
Mean follow-up (years) | 4.7 (SD 2.4) | 4.7 (SD 2.5) | 6.6 (SD 3) | P = 0.16 |
Age | 62.9 (SD 8.1) | 70.4 (SD 9.7) | 68 (SD 8.3) | P = 0.01 |
BMI | 30.9 (SD 6.3) | 27 (SD 4.5) | 27.1 (SD 5.7) | P = 0.06 |
Gender | 15 females, 5 males | 34 females, 4 males | 11 females, 1 male | P = 0.34 |
ASA grade | 2.25 (SD 0.6) | 2.16 (SD 0.5) | 2.17 (SD 0.4) | P = 0.76 |
Preop mean and median OKS | 19.3 (SD 7.8), 17 (IQR 11) | 23.1 (SD 8.8), 23.5 (IQR 15) | 20.4 (SD 7.5), 20.5 (IQR 9) | P = 0.37 |
Preop mean and median OKS functional subscale score | 10 (SD 3.8), 10 (IQR 6) | 11 (SD 3.9), 11 (IQR 6) | 11.3 (SD 3.7), 12 (IQR 6) | P = 0.58 |
Preop mean and median OKS pain subscale score | 10.5 (SD 5), 10 (IQR 9) | 11.1 (SD 5.1), 10 (IQR 7) | 11.7 (SD 5.5), 13 (IQR 7) | P = 0.80 |
Preop mean and median Tegner | 1.7 (SD 1.4), 2 (IQR 3) | 1.9 (SD 0.9), 2 (IQR 2) | 1.5 (SD 1), 1.5 (IQR 1) | P = 0.70 |
Preop mean and median AKSS-O | 48.7 (SD 14.2), 50 (IQR 14) | 58 (SD 12.8), 59.5 (IQR 16.5) | 50 (SD 14.5), 48 (IQR 11) | P = 0.18 |
Preop mean and median AKSS-F | 62.1 (SD 16.8), 62.5 (IQR 12.5) | 65.1 (SD 14.3), 70 (IQR 15) | 60 (SD 12.6), 60 (IQR 15) | P = 0.74 |