Across‐Envelope Comparisons of Dynamic Histomorphometric Indices at Months 6 or 24 for Teriparatide and Zoledronic Acid in the Paired Biopsy Set

Month 6Month 24
IndicesCancellousEndocorticalIntracorticalPeriostealCancellousEndocorticalIntracorticalPeriosteal
Teriparatide
MS/BS (%)4.4419.0617.490.71*3.065.8213.341.91
(2.18, 10.75)(7.67, 26.05)(14.67, 30.36)(0.00, 1.89)(1.49, 4.58)(3.10, 7.08)(12.55, 15.87)(0.87, 2.21)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
BFR/BS (mm3/mm2/year)0.01100.03340.05020.0008*0.00570.00900.03100.0021
(0.0040, 0.0231)(0.0159, 0.0411)(0.0417, 0.0750)(0.0000, 0.0021)(0.0022, 0.0061)(0.0049, 0.0100)(0.0276, 0.0416)(0.0016, 0.0023)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
Ac.f (per year)0.350.920.190.24
(0.16, 0.74)(0.46, 1.09)(0.08, 0.20)(0.14, 0.29)
n = 7n = 7n = 9n = 9
MAR (μm/day)0.590.440.72*0.300.410.420.590.30*
(0.50, 0.63)(0.42, 0.57)(0.68, 0.78)(0.30, 0.30)(0.37, 0.51)(0.37, 0.45)(0.57, 0.69)(0.30, 0.32)
n = 7n = 7n = 7n = 5n = 9n = 9n = 9n = 8
Zoledronic acid
MS/BS (%)0.000.320.580.000.040.002.09*0.00
(0.00, 0.15)(0.00, 0.80)(0.00, 1.84)(0.00, 0.00)(0.00, 0.30)(0.00, 0.91)(0.31, 8.60)(0.00, 0.06)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
BFR/BS (mm3/mm2/year)0.00000.00030.00070.00000.00000.00000.0039*0.0000
(0.0000, 0.0002)(0.0000, 0.0009)(0.0000, 0.0037)(0.0000, 0.0000)(0.0000, 0.0004)(0.0000, 0.0016)(0.0003, 0.0186)(0.0000, 0.0007)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
Ac.f (per year)0.000.010.000.00
(0.00, 0.01)(0.00, 0.03)(0.00, 0.01)(0.00, 0.04)
n = 9n = 9n = 8n = 8
MAR (μm/day)0.370.300.550.320.300.440.520.30
(0.30, 0.51)(0.30, 0.40)(0.40, 0.65)(0.30, 0.34)(0.30, 0.32)(0.30, 0.52)(0.30, 0.61)(0.30, 0.30)
n = 3n = 5n = 5n = 2n = 4n = 3n = 7n = 2
Month 6Month 24
IndicesCancellousEndocorticalIntracorticalPeriostealCancellousEndocorticalIntracorticalPeriosteal
Teriparatide
MS/BS (%)4.4419.0617.490.71*3.065.8213.341.91
(2.18, 10.75)(7.67, 26.05)(14.67, 30.36)(0.00, 1.89)(1.49, 4.58)(3.10, 7.08)(12.55, 15.87)(0.87, 2.21)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
BFR/BS (mm3/mm2/year)0.01100.03340.05020.0008*0.00570.00900.03100.0021
(0.0040, 0.0231)(0.0159, 0.0411)(0.0417, 0.0750)(0.0000, 0.0021)(0.0022, 0.0061)(0.0049, 0.0100)(0.0276, 0.0416)(0.0016, 0.0023)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
Ac.f (per year)0.350.920.190.24
(0.16, 0.74)(0.46, 1.09)(0.08, 0.20)(0.14, 0.29)
n = 7n = 7n = 9n = 9
MAR (μm/day)0.590.440.72*0.300.410.420.590.30*
(0.50, 0.63)(0.42, 0.57)(0.68, 0.78)(0.30, 0.30)(0.37, 0.51)(0.37, 0.45)(0.57, 0.69)(0.30, 0.32)
n = 7n = 7n = 7n = 5n = 9n = 9n = 9n = 8
Zoledronic acid
MS/BS (%)0.000.320.580.000.040.002.09*0.00
(0.00, 0.15)(0.00, 0.80)(0.00, 1.84)(0.00, 0.00)(0.00, 0.30)(0.00, 0.91)(0.31, 8.60)(0.00, 0.06)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
BFR/BS (mm3/mm2/year)0.00000.00030.00070.00000.00000.00000.0039*0.0000
(0.0000, 0.0002)(0.0000, 0.0009)(0.0000, 0.0037)(0.0000, 0.0000)(0.0000, 0.0004)(0.0000, 0.0016)(0.0003, 0.0186)(0.0000, 0.0007)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
Ac.f (per year)0.000.010.000.00
(0.00, 0.01)(0.00, 0.03)(0.00, 0.01)(0.00, 0.04)
n = 9n = 9n = 8n = 8
MAR (μm/day)0.370.300.550.320.300.440.520.30
(0.30, 0.51)(0.30, 0.40)(0.40, 0.65)(0.30, 0.34)(0.30, 0.32)(0.30, 0.52)(0.30, 0.61)(0.30, 0.30)
n = 3n = 5n = 5n = 2n = 4n = 3n = 7n = 2

Values are shown as median (interquartile range). Note: The median values for MS/BS and BFR/BS at 24 months either continued to exceed (intracortical envelope; p < 0.05) or were similar to (endocortical envelope; NS, p ≥ 0.7) the values observed in the cancellous envelope at month 6 (TPTD, n = 6 at both time points; ZOL, n = 8 at both time points). Values of p are from the Wilcoxon rank sum test. Symbols indicate significant differences between the other 3 envelopes and the cancellous envelope at month 6 or month 24: *p < 0.05,p ≤ 0.01, p ≤ 0.001.

TPTD = teriparatide; ZOL = zoledronic acid. Values are shown as median (interquartile range); values in the cancellous envelope are in bold type as they served as a reference to compare the activity in the other 3 bone envelopes at either 6 or 24 months.

Across‐Envelope Comparisons of Dynamic Histomorphometric Indices at Months 6 or 24 for Teriparatide and Zoledronic Acid in the Paired Biopsy Set

Month 6Month 24
IndicesCancellousEndocorticalIntracorticalPeriostealCancellousEndocorticalIntracorticalPeriosteal
Teriparatide
MS/BS (%)4.4419.0617.490.71*3.065.8213.341.91
(2.18, 10.75)(7.67, 26.05)(14.67, 30.36)(0.00, 1.89)(1.49, 4.58)(3.10, 7.08)(12.55, 15.87)(0.87, 2.21)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
BFR/BS (mm3/mm2/year)0.01100.03340.05020.0008*0.00570.00900.03100.0021
(0.0040, 0.0231)(0.0159, 0.0411)(0.0417, 0.0750)(0.0000, 0.0021)(0.0022, 0.0061)(0.0049, 0.0100)(0.0276, 0.0416)(0.0016, 0.0023)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
Ac.f (per year)0.350.920.190.24
(0.16, 0.74)(0.46, 1.09)(0.08, 0.20)(0.14, 0.29)
n = 7n = 7n = 9n = 9
MAR (μm/day)0.590.440.72*0.300.410.420.590.30*
(0.50, 0.63)(0.42, 0.57)(0.68, 0.78)(0.30, 0.30)(0.37, 0.51)(0.37, 0.45)(0.57, 0.69)(0.30, 0.32)
n = 7n = 7n = 7n = 5n = 9n = 9n = 9n = 8
Zoledronic acid
MS/BS (%)0.000.320.580.000.040.002.09*0.00
(0.00, 0.15)(0.00, 0.80)(0.00, 1.84)(0.00, 0.00)(0.00, 0.30)(0.00, 0.91)(0.31, 8.60)(0.00, 0.06)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
BFR/BS (mm3/mm2/year)0.00000.00030.00070.00000.00000.00000.0039*0.0000
(0.0000, 0.0002)(0.0000, 0.0009)(0.0000, 0.0037)(0.0000, 0.0000)(0.0000, 0.0004)(0.0000, 0.0016)(0.0003, 0.0186)(0.0000, 0.0007)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
Ac.f (per year)0.000.010.000.00
(0.00, 0.01)(0.00, 0.03)(0.00, 0.01)(0.00, 0.04)
n = 9n = 9n = 8n = 8
MAR (μm/day)0.370.300.550.320.300.440.520.30
(0.30, 0.51)(0.30, 0.40)(0.40, 0.65)(0.30, 0.34)(0.30, 0.32)(0.30, 0.52)(0.30, 0.61)(0.30, 0.30)
n = 3n = 5n = 5n = 2n = 4n = 3n = 7n = 2
Month 6Month 24
IndicesCancellousEndocorticalIntracorticalPeriostealCancellousEndocorticalIntracorticalPeriosteal
Teriparatide
MS/BS (%)4.4419.0617.490.71*3.065.8213.341.91
(2.18, 10.75)(7.67, 26.05)(14.67, 30.36)(0.00, 1.89)(1.49, 4.58)(3.10, 7.08)(12.55, 15.87)(0.87, 2.21)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
BFR/BS (mm3/mm2/year)0.01100.03340.05020.0008*0.00570.00900.03100.0021
(0.0040, 0.0231)(0.0159, 0.0411)(0.0417, 0.0750)(0.0000, 0.0021)(0.0022, 0.0061)(0.0049, 0.0100)(0.0276, 0.0416)(0.0016, 0.0023)
n = 7n = 7n = 7n = 7n = 9n = 9n = 9n = 9
Ac.f (per year)0.350.920.190.24
(0.16, 0.74)(0.46, 1.09)(0.08, 0.20)(0.14, 0.29)
n = 7n = 7n = 9n = 9
MAR (μm/day)0.590.440.72*0.300.410.420.590.30*
(0.50, 0.63)(0.42, 0.57)(0.68, 0.78)(0.30, 0.30)(0.37, 0.51)(0.37, 0.45)(0.57, 0.69)(0.30, 0.32)
n = 7n = 7n = 7n = 5n = 9n = 9n = 9n = 8
Zoledronic acid
MS/BS (%)0.000.320.580.000.040.002.09*0.00
(0.00, 0.15)(0.00, 0.80)(0.00, 1.84)(0.00, 0.00)(0.00, 0.30)(0.00, 0.91)(0.31, 8.60)(0.00, 0.06)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
BFR/BS (mm3/mm2/year)0.00000.00030.00070.00000.00000.00000.0039*0.0000
(0.0000, 0.0002)(0.0000, 0.0009)(0.0000, 0.0037)(0.0000, 0.0000)(0.0000, 0.0004)(0.0000, 0.0016)(0.0003, 0.0186)(0.0000, 0.0007)
n = 9n = 9n = 9n = 9n = 8n = 8n = 8n = 8
Ac.f (per year)0.000.010.000.00
(0.00, 0.01)(0.00, 0.03)(0.00, 0.01)(0.00, 0.04)
n = 9n = 9n = 8n = 8
MAR (μm/day)0.370.300.550.320.300.440.520.30
(0.30, 0.51)(0.30, 0.40)(0.40, 0.65)(0.30, 0.34)(0.30, 0.32)(0.30, 0.52)(0.30, 0.61)(0.30, 0.30)
n = 3n = 5n = 5n = 2n = 4n = 3n = 7n = 2

Values are shown as median (interquartile range). Note: The median values for MS/BS and BFR/BS at 24 months either continued to exceed (intracortical envelope; p < 0.05) or were similar to (endocortical envelope; NS, p ≥ 0.7) the values observed in the cancellous envelope at month 6 (TPTD, n = 6 at both time points; ZOL, n = 8 at both time points). Values of p are from the Wilcoxon rank sum test. Symbols indicate significant differences between the other 3 envelopes and the cancellous envelope at month 6 or month 24: *p < 0.05,p ≤ 0.01, p ≤ 0.001.

TPTD = teriparatide; ZOL = zoledronic acid. Values are shown as median (interquartile range); values in the cancellous envelope are in bold type as they served as a reference to compare the activity in the other 3 bone envelopes at either 6 or 24 months.

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