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Age-related changes in iliac crest trabecular microanatomic bone structure in man
J E Compston1, R W Mellish, N J Garrahan
1Department of Pathology, University of Wales College of Medicine, Cardiff, UK.
Bone
|January 1, 1987
Summary
Age-related bone loss involves decreased trabecular bone interconnectedness. Females experience significant loss of nodes and struts, impacting bone structure more than males, where thinning is more prevalent.
Area of Science:
- Orthopedics
- Gerontology
- Biomedical Engineering
Background:
- Human iliac crest trabecular bone undergoes microanatomic changes with age.
- Understanding these changes is crucial for addressing age-related bone loss and fractures.
Purpose of the Study:
- To investigate age-related microanatomic structural alterations in human iliac crest trabecular bone.
- To quantify changes in nodes, free ends, and struts using a novel computerized method.
Main Methods:
- Analysis of iliac crest trabecular bone biopsies from 90 human subjects.
- Utilized a new computerized method for automatic identification and quantification of bone structural elements (nodes, free ends, struts).
Main Results:
- Both sexes showed significant age-related decreases in nodes and trabecular struts.
- Females exhibited a decreased node-to-free end ratio and increased free end-to-free end strut length.
- Males showed an increased cortex-to-free end strut length, suggesting trabecular thinning is more significant.
Conclusions:
- Age-related bone loss in females is characterized by trabecular loss and decreased interconnectedness.
- Trabecular removal also occurs in males, but trabecular thinning appears to be a more significant factor in bone loss.
- The findings highlight sex-specific differences in the microanatomic changes contributing to age-related bone loss.