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Characterization of trabecular bone microstructure in premenopausal women with distal radius fractures
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Characterization of trabecular bone microstructure in premenopausal women with distal radius fractures
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Characterization of trabecular bone microstructure in premenopausal women with distal radius fractures
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Journal Article
Characterization of trabecular bone microstructure in premenopausal women with distal radius fractures
2018
Overview
SummaryIndividual trabecular segmentation was utilized to identify differences in trabecular bone structure in premenopausal women with wrist fractures and non-fracture controls. Fracture subjects had reduced trabecular plate volume, number, thickness, and connectivity. Identifying altered trabecular microarchitecture in young women offers opportunities for counseling and lifestyle modifications to reduce fracture risk.IntroductionPremenopausal women with distal radius fractures (DRF) have worse trabecular bone microarchitecture than non-fracture controls (CONT), yet the characteristics of their trabecular bone structure are unknown.MethodsPremenopausal women with DRF (n = 40) and CONT (n = 80) were recruited. Primary outcome variables included trabecular structure at the distal radius and tibia, assessed by volumetric decomposition of individual trabecular plates and rods from high-resolution peripheral quantitative CT images. Trabecular morphology included plate and rod number, volume, thickness, and connectivity. Areal bone mineral density (aBMD) of the femoral neck (FN aBMD), and ultradistal radius (UDR aBMD) were measured by DXA.ResultsTrabecular morphology differed between DRF and CONT at the radius and tibia (OR per SD decline 1.58–2.7). At the radius, associations remained significant when adjusting for age and FN aBMD (ORs = 1.76–3.26) and age and UDR aBMD (ORs = 1.72–3.97). Plate volume fraction, number and axially aligned trabeculae remained associated with DRF after adjustment for trabecular density (ORs = 2.55–2.85). Area under the curve (AUC) for discriminating DRF was 0.74 for the proportion of axially aligned trabeculae, compared with 0.60 for FN aBMD, 0.65 for UDR aBMD, and 0.69 for trabecular density. Plate number, plate-plate junction, and axial bone volume fraction remained associated with DRF at the tibia (ORs = 2.14–2.77) after adjusting for age, FN aBMD, or UDR aBMD. AUCP.P.Junc.D was 0.72 versus 0.61 for FNaBMD, 0.66 for UDRaBMD, and 0.70 for trabecular density.ConclusionPremenopausal women with DRF have lower trabecular plate volume, number, thickness, and connectivity than CONT. Identification of young women with altered microarchitecture offers opportunities for lifestyle modifications to reduce fracture risk.
