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Age-dependent changes of the normal human spine during adulthood
F J Rühli1, M Müntener, M Henneberg
1Department of Anatomical Sciences, University of Adelaide, 5005 Adelaide, Australia. frank.ruhli@anatom.unizh.ch
Summary
Aging influences human spine morphology, with some bone dimensions increasing in size during adulthood, particularly in men. This study isolated aging effects from degeneration to understand spinal changes over time.
Area of Science:
- Paleoanthropology
- Human Anatomy
- Gerontology
Background:
- The impact of aging on the osseous spine's morphology remains debated.
- Clinical studies often conflate aging effects with degenerative changes.
- Understanding degeneration-independent aging is crucial for accurate skeletal analysis.
Purpose of the Study:
- To investigate the effects of aging on osseous human spine morphology during adulthood.
- To differentiate age-related changes from degenerative alterations.
- To analyze sex-specific morphological variations due to aging.
Main Methods:
- Assessed osseous dimensions of spinal landmarks in macroscopically normal Swiss and Central European skeletal samples.
- Utilized historically known and anthropologically determined age and sex data.
- Correlated measurements with individual age using linear regression, analyzed by sex.
Main Results:
- Few osseous spinal dimensions significantly correlated with age, primarily in men, showing increased size.
- Similar trends observed in larger samples, with significant alterations in women's spinal measurements.
- Increased spinal dimensions may reflect enhanced individual robustness with age.
Conclusions:
- Aging, independent of degeneration, can lead to increased size in specific osseous spinal dimensions, especially in males.
- Sex-specific differences in age-related spinal morphology were noted.
- Findings suggest aging contributes to spinal robustness, excluding secular changes as a primary driver.