Table 2 Meta-analyses of BMD of the different regions of knee at different time points
ROI | 3Â months | 6Â months | 12Â months | |
|---|---|---|---|---|
WMD (95%CI) | WMD (95%CI) | WMD (95%CI) | ||
Tibia | 1 | 4.90 (3.53, 6.26) | 6.63 (5.34, 7.93) | 4.22 (2.92, 5.51) |
 P < 0.05 |  P < 0.05 |  P < 0.05 | ||
2 | 2.61 (1.32, 3.91) | 5.86 (4.57, 7.16) | 8.57 (7.28, 9.87) | |
 P < 0.05 |  P < 0.05 |  P < 0.05 | ||
3 | 1.10 (−0.19, 2.40) | 0.45 (− 0.84, 1.75) | 0.36 (0.94, 1.65) | |
 P = 0.18 |  P = 0.39 |  P = 0.44 | ||
Femur | 4 | 4.10 (2.74, 5.46) | 4.50 (3.13, 5.86) | 5.70 (4.34, 7.06) |
P < 0.05 |  P < 0.05 |  P < 0.05 | ||
5 | 6.90 (5.54, 8.27) | 6.50 (5.14, 7.87) | 7.02 (5.66, 8.39) | |
 P < 0.05 |  P < 0.05 |  P < 0.05 | ||
6 | 4.34 (2.97, 5.70) | 4.32 (2.96, 5.68) | 5.25 (3.89, 6.62) | |
 P < 0.05 |  P < 0.05 |  P < 0.05 | ||