Abstract
We used new approaches to the analysis of diagnostic scans to detect changes in bone density in different regions of the hip after 3years of treatment with the zoledronic acid. We showed that the drug significantly increases hip bone density compared to placebo at regions where hip fractures usually occur. This study aims to identify whether treatment with zoledronic acid exerts site-specific differential effects on volumetric bone mineral density (vBMD) at the hip. We analysed quantitative computed tomography scans of the hip obtained at baseline and 36months in 179 women participating in the HORIZON Pivotal Fracture Trial. Cortical, trabecular and integral BMDs were determined at three main regions of interest-the femoral neck (FN), trochanter (TR) and total hip (TH)-and several sub-regions of interest, namely the proximal, middle, distal, anterior, posterior, inferomedial and superolateral FN, and the middle and distal TR. Volumetric BMD increased significantly (p < 0.05) from baseline with zoledronic acid compared to placebo. Trabecular vBMD increased as follows: FN, 5.4%; FN sub-regions, 6.0% (proximal), 4.4% (middle), 5.6% (distal), 7.5% (anterior), 7.0% (superolateral) and 5.4% (posterior); TR, 6.5% and TH, 5.7%. Cortical vBMD increased as follows: FN sub-regions, 5.0% (proximal FN) and 2.3% (anterior); TR, 4.6%; middle TR, 2.7% and TH, 3.8%. The effects on vBMD of annual infusion of 5mg of zoledronic acid are site-specific and dominated by trabecular changes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.