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Table 2 Mean (SD) BMD (g/cm2) for both groups in all gruen zones

From: Bone turnover and periprosthetic bone loss after cementless total hip arthroplasty can be restored by zoledronic acid: a prospective, randomized, open-label, controlled trial

Gruen zones 1 2 3 4 5 6 7 Delta
Baseline
 ZA group 0.64(0.14) 1.26(0.21) 1.52(0.24) 1.63(0.19) 1.57(0.19) 1.24(0.21) 0.96(0.19) 1.15(0.16)
Control 0.64(0.16) 1.24(0.22) 1.53(0.21) 1.66(0.21) 1.61(0.23) 1.25(0.22) 0.97(0.24) 1.15(0.17)
p-value 0.863 0.778 0.779 0.522 0.446 0.951 0.830 0.968
12 weeks
 ZA group 0.74(0.38) 1.46(0.28) 1.69(0.88) 1.73(0.35) 1.75(0.58) 1.40(0.21) 1.09(0.22) 1.38(0.60)
 Control 0.59(0.14) 1.28(0.21) 1.50(0.21) 1.61(0.21) 1.61(0.22) 1.23(0.23) 0.88(0.20) 1.16(0.14)
p-value 0.060 0.010a 0.276 0.142 0.238 0.009a 0.001a 0.077
6 months
 ZA group 0.65(0.14) 1.40(0.17) 1.55(0.17) 1.68(0.19) 1.62(0.27) 1.40(0.19) 1.04(0.25) 1.26(0.12)
 Control 0.59(0.15) 1.31(0.26) 1.51(0.22) 1.62(0.23) 1.63(0.23) 1.26(0.23) 0.84(0.30) 1.17(0.16)
p-value 0.109 0.144 0.529 0.301 0.922 0.021a 0.008a 0.021a
1 year
 ZA group 0.66(0.15) 1.38(0.19) 1.50(0.24) 1.68(0.19) 1.66(0.16) 1.40(0.22) 1.01(0.27) 1.25(0.13)
 Control 0.54(0.20) 1.19(0.38) 1.44(0.38) 1.54(0.38) 1.51(0.39) 1.20(0.36) 0.80(0.30) 1.11(0.28)
p-value 0.021a 0.035a 0.434 0.096 0.057 0.014a 0.011a 0.021a
2 years
 ZA group 0.67(0.15) 1.38(0.20) 1.49(0.25) 1.68(0.19) 1.65(0.20) 1.44(0.21) 1.01(0.27) 1.26(0.13)
 Control 0.55(0.15) 1.35(0.77) 1.51(0.23) 1.59(0.23) 1.62(0.21) 1.21(0.24) 0.78(0.22) 1.14(0.15)
p-value 0.013a 0.870 0.786 0.167 0.612 0.001a 0.003a 0.011a
  1. astatistically significant difference between ZA and control groups
  2. BMD bone mineral density, SD standard deviation, ZA zoledronic acid