Bone Mineral Density in Developmental and Chronic Conditions

Bone mineral density (BMD) is a fundamental determinant of skeletal strength and fracture risk. During childhood and adolescence, the skeleton undergoes rapid accrual of mineral mass that culminates in peak bone mass in the third decade of life. Genetic factors, hormonal milieu, nutritional intake—particularly calcium and vitamin D—and mechanical loading jointly shape this developmental trajectory. Failure to achieve optimal peak bone mass predisposes to early-onset osteopenia and osteoporosis. In contrast, chronic conditions such as chronic kidney disease, β-thalassaemia and endocrine disorders disrupt the balance between bone formation and resorption throughout life. Uraemia, secondary hyperparathyroidism and alterations in phosphate handling can accelerate bone loss, impair microarchitecture and delay fracture healing. Understanding the interplay between developmental determinants and chronic insults is essential for designing interventions that both maximise bone accrual in youth and preserve skeletal integrity in later years. Advances in imaging, molecular biology and biomechanical modelling have begun to reveal how cell-level changes in osteoblast and osteoclast activity translate into macroscale alterations in bone structure and function. These insights carry global significance for fracture prevention and the management of metabolic bone disease in diverse populations.

Research from Nature Portfolio

A recent animal study employing an adenine-induced chronic kidney disease model in rats mapped biomechanical and histomorphometric changes in the mandible. Compared with controls, uraemic animals exhibited reduced trabecular bone volume, diminished structural stiffness and elevated bone mineralisation apposition rates, features characteristic of osteitis fibrosa. A murine investigation of β-thalassaemic heterozygotes subjected to five-sixths nephrectomy revealed that thalassaemic mice were unexpectedly resistant to cancellous bone loss. This protection correlated with altered erythropoietin and FGF23 levels and attenuated upregulation of osteoblast and osteoclast-related genes. Foundational work on calvarial and femoral defect repair in uraemic rats demonstrated impaired new bone formation, decreased local BMD and delayed collagen maturation under conditions of secondary hyperparathyroidism. These studies collectively underscore how renal dysfunction and genetic blood disorders remodel bone remodelling pathways and compromise skeletal regeneration.

Bone Mineral Density in Developmental and Chronic Conditions publication trend

The graph below shows the total number of articles in bone mineral density in developmental and chronic conditions across all publications each year (not limited to Nature Index journals).

Technical terms

Bone mineral density (BMD): The mass of mineral per unit area of bone, typically expressed in grams per square centimetre, reflecting bone strength.

Dual-energy X-ray absorptiometry (DXA): A non-invasive imaging technique that quantifies BMD at central and peripheral sites.

Trabecular bone: The spongy, highly vascularised interior network of bone tissue that undergoes rapid remodelling.

Cortical bone: The dense, compact outer layer of bone providing mechanical support and protection.

Osteoblast: A cell responsible for new bone formation through secretion of collagen and mineralisation of the matrix.

Osteoclast: A multinucleated cell that degrades bone matrix during physiological remodelling and in disease.

Peak bone mass: The maximum BMD attained in early adulthood, serving as a reserve against age-related bone loss.

Osteitis fibrosa: A form of high-turnover bone disease characterised by fibrous tissue deposition due to hyperparathyroidism.

References

1. Association Between Age at Puberty and Bone Accrual From 10 to 25 Years of Age. JAMA Network Open (2019).
2. Chronic Kidney Disease Impairs Bone Defect Healing in Rats. Scientific Reports (2016).
3. Nephrectomy Does not Exacerbate Cancellous Bone loss in Thalassemic Mice. Scientific Reports (2020).
4. Biomechanical and histomorphological analysis of the mandible in rats with chronic kidney disease. Scientific Reports (2023).
5. Association between hepatitis A seropositivity and bone mineral density in adolescents and adults: a cross-sectional study using NHANES data. Sao Paulo Medical Journal (2024).
6. Bone mineral density in schoolchildren and students of the city of Krasnodar. Russian Pediatric Journal (2023).