Using QCT MIAF, denosumab treatment was shown to significantly in

Using QCT MIAF, denosumab treatment was shown to significantly increase total hip integral vBMD from baseline and compared with placebo at months 12, 24, and 36. In the denosumab group, the mean percentage change from baseline to selleck month 36 in total hip integral vBMD was 6.4% (p < 0.0001; Fig. 2). In the placebo group, total hip integral vBMD decreased

over the same time interval by − 1.5% (p = 0.008). The treatment difference between denosumab and placebo was significant at months 12, 24, and 36 (p < 0.01 for all). Integral volume of the total hip did not significantly change in either group (data not shown). The BMD results were similar when assessed by DXA (Fig. 2). At baseline, total hip integral vBMD and aBMD for all subjects showed a strong correlation click here (r = 0.83; p < 0.0001; data not shown). Changes in vBMD and aBMD during the study were moderately correlated in both the placebo group (r = 0.47; p < 0.0001) and the denosumab group (r = 0.32; p = 0.0004). The percentage gains in total hip integral vBMD in the denosumab group were accounted for by significant increases in the trabecular, subcortical, and cortical compartments at months 12, 24, and 36 (Fig. 3). Within the cortical compartment,

similar improvements were observed in the outer and inner cortical regions (data not shown). Denosumab treatment also significantly increased total hip integral BMC from baseline by month 12 (2.4%; p < 0.001), IMP dehydrogenase and the improvement progressed over 36 months. Treatment with denosumab resulted in a mean percentage change from baseline

to month 36 in total hip integral BMC of 4.8% (p < 0.0001), and treatment with placebo led to a decrease of − 2.6% over the same time interval (p = 0.0004; Fig. 4). The treatment difference between denosumab and placebo was significant at months 12, 24, and 36 (p < 0.001 for all). Similar to observations with total hip integral vBMD, a strong correlation also was observed at baseline for these QCT MIAF total integral BMC measurements and DXA BMC for all subjects (r = 0.88; p < 0.0001; data not shown). Significant percentage gains in BMC from baseline and compared with placebo also were observed in the denosumab group in each bone compartment, specifically the trabecular, subcortical, and cortical compartments. In the denosumab group at month 12, BMC increased by 4.1% in the trabecular compartment, 2.3% in the subcortical compartment, and 2.2% in the cortical compartment (p < 0.001 for all). Gains also were observed in all 3 compartments at month 24 (7.2%, 3.9%, and 3.2%, respectively; p < 0.05 for all) and month 36 (8.4%, 4.9%, and 3.9%, respectively; p < 0.001 for all; Fig. 4). Outer and inner cortical regions also had significant gains from baseline and placebo (data not shown). Observed absolute changes in vBMD and BMC for integral and compartmental assessments also were significant in the denosumab group compared with the placebo group (p < 0.

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