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Age-related changes in human PCLs: a light and electron microscopic study.
Mustafa F Sargon1, M Nedim Doral, O Ahmet Atay
1Department of Anatomy, Faculty of Medicine, Hacettepe University, 06100 Ankara, Turkey. mfsargon@hacettepe.edu.tr
Summary
Ultrastructural analysis of the posterior cruciate ligament (PCL) reveals age-related changes. Collagen fiber diameter decreases and fibril concentration increases with aging, impacting PCL reconstruction strategies.
Area of Science:
- Orthopedics
- Biomaterials Science
- Histology
Background:
- The posterior cruciate ligament (PCL) is crucial for knee stability.
- Ultrastructural characteristics of the PCL may change with age.
- Understanding these changes is important for PCL reconstruction.
Purpose of the Study:
- To compare ultrastructural differences in human posterior cruciate ligaments across various age groups.
- To investigate potential age- and sex-related variations in PCL collagen and oxytalan fibers.
Main Methods:
- Light and transmission electron microscopy were employed.
- 36 patients were analyzed, categorized by age and sex.
- Ultrastructural components of the PCL were examined.
Main Results:
- No significant ultrastructural differences were found between sexes or in individuals aged 30-59 years.
- Adolescents (10-19 years) exhibited variable collagen fiber diameters and numerous oxytalan fibers.
- Aging led to decreased collagen fiber diameter and increased collagen fibril concentration, most notably in the 60-69 age group.
Conclusions:
- Age significantly influences the ultrastructure of the posterior cruciate ligament.
- Collagen fiber characteristics change progressively with aging.
- These findings provide insights into age-related PCL degeneration and may inform PCL reconstruction techniques.