Trabecular bone of growth plate origin influences both trabecular and cortical morphology in adulthood

• Published in: Journal of bone and mineral research Vol. 26; no. 7; pp. 1577 - 1583
• Main Authors: Wang, Qingju, Ghasem‐Zadeh, Ali, Wang, Xiao‐Fang, Iuliano‐Burns, Sandra, Seeman, Ego
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.07.2011; Wiley; Wiley Subscription Services, Inc
• Subjects: Adolescent; Adult; Aging - physiology; Anthropometry; Biological and medical sciences; Bone Density - physiology; Child; Cortical Bone; Female; Fundamental and applied biological sciences. Psychology; Growth; Growth Plate - anatomy & histology; Growth Plate - physiology; Humans; Metaphyses; Middle Aged; Mothers; Nuclear Family; Organ Size; PQCT; Radius - anatomy & histology; Radius - physiology; Skeleton and joints; Tibia - anatomy & histology; Tibia - physiology; Trabeculae; Vertebrates: osteoarticular system, musculoskeletal system; Young Adult; Osteoarticular system; METAPHYSES; Vertebrata; Epiphyseal cartilage; Mammalia; Growth; Morphology; PQCT; TRABECULAE; Cortical bone
• ISSN: 0884-0431; 1523-4681
• DOI: 10.1002/jbmr.360

Skeletal fragility is common at metaphyseal regions of long bones. The cortices of this region are derived by coalescence of trabeculae around the periphery of the growth plate, not by periosteal apposition, as occurs in the diaphyses. We therefore hypothesized that trabecular bone in childhood predicted both cortical and trabecular morphology in adulthood. To test this hypothesis, we measured distal radial and tibial structure using high‐resolution peripheral quantitative computed tomography in 61 daughter‐mother pairs, mean age 12.5 years (range 7 to 19 years) and 44.1 years (range 32 to 50 years), respectively. The daughters' trabecular bone volume (BV/TV), thickness, number, and separation predicted the corresponding traits in their mothers. Their trabecular BV/TV also predicted their mothers' cortical thickness (r = 0.32, p = .02). By contrast, the daughters' cortical thickness did not predict their mothers' cortical thickness. The daughters had higher trabecular BV/TV than their mothers (mean ± SD, radius 0.134 ± 0.024 versus 0.124 ± 0.033, p = .03; tibia 0.145 ± 0.021 versus 0.135 ± 0.032, p < .01) owing to greater trabecular number, not thickness, and less trabecular separation. Abnormalities in the development of metaphyseal trabecular bone are likely to influence fragility in both trabecular and cortical bone of this region in adulthood. © 2011 American Society for Bone and Mineral Research.