ArticleThe Eurasian journal of medicine2026
Canal-to-Bone Ratio as an Independent Predictor of Hip Bone Mineral Density Scores: A Retrospective Analysis.
Article in The Eurasian journal of medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundHip fractures are a major consequence of osteoporosis. While dual-energy X-ray absorptiometry (DXA) is the gold standard for bone mineral density (BMD), radiographic indices may complement DXA. The canal-to-bone ratio (CBR)-the intramedullary canal diameter divided by the outer cortical diameter on plain radiographs-may reflect bone quality. We examined the relationship between CBR and BMD and whether CBR independently predicts hip T- and Z-scores.
methodsThe study retrospectively analyzed 90 patients with femoral radiographs and DXA. Canal-tobone ratio was measured 7 cm distal to the lesser trochanter. Lumbar and hip T-/Z-scores were recorded. Associations were tested with Pearson/Spearman correlations and linear regression; multivariable models adjusted for age.
resultsCanal-to-bone ratio correlated negatively with hip BMD (T-score r = -0.63, P = .005; Z-score r = -0.65, P = .004), but not with lumbar scores (P > .20). Each 0.1 increment in CBR was associated with a 0.67-unit decrease in hip T-score and a 0.59-unit decrease in hip Z-score. After adjusting for age, CBR remained an independent predictor of hip T-score (β = -6.09, P = .012, R2 = 0.44) and hip Z-score (β = -5.59, P = .009, R2 = 0.43).
conclusionCanal-to-bone ratio shows a strong, independent association with hip BMD. As a simple metric obtainable from routine radiographs, CBR may serve as a surrogate marker of hip bone quality and fracture risk, particularly in settings with limited DXA access. Cite this article as: Kaya S. Canal-to-bone ratio as an independent predictor of hip bone mineral density scores: A retrospective analysis. Eurasian J Med. 2026, 58(1), 1164, doi: 10.5152/eurasianjmed.2026.251164.
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