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[Pathological study of the supraspinatus tendon]
1Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
Nihon Seikeigeka Gakkai Zasshi
|December 1, 1988
Summary
Rotator cuff tears are linked to aging, with microscopic changes in tendons. Pathogenesis involves aging, enthesopathy, tendon properties, injury, and impingement.
Area of Science:
- Orthopedics
- Pathology
- Gerontology
Context:
- Rotator cuff tears are a common cause of shoulder pain and dysfunction.
- Understanding the aging process and pathogenesis is crucial for effective treatment.
- Cadaveric supraspinatus tendons provide a model for studying age-related changes.
Purpose:
- To investigate the aging process and pathogenesis of rotator cuff tears.
- To analyze microscopic changes in supraspinatus tendons across different age groups.
- To identify factors contributing to rotator cuff tear development.
Summary:
- A study of 268 cadaveric supraspinatus tendons revealed age-related microscopic alterations.
- Tears were observed in 6.7% of specimens (complete thickness) and 13.8% (incomplete thickness).
- Articular sides showed fewer tenocytes and arterioles, more chondrocyte-like cells, and increased intimal hyperplasia in older individuals.
Impact:
- Findings elucidate the multifactorial pathogenesis of rotator cuff tears.
- Highlights the role of aging and specific tendon microstructural changes.
- Provides insights for developing targeted interventions and preventative strategies for rotator cuff injuries.