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Histopathological findings in chronic tendon disorders
M Järvinen1, L Józsa, P Kannus
1Department of Surgery, University Hospital of Tampere, Finland.
Scandinavian Journal of Medicine & Science in Sports
|April 1, 1997
Summary
Tendon degeneration, not specific diseases, is the primary cause of spontaneous tendon ruptures. Overuse and sedentary lifestyles contribute to this degeneration, leading to chronic tendon problems.
Area of Science:
- Sports Medicine
- Orthopedics
- Pathology
Background:
- Tendon disorders are a significant challenge in sports medicine, often leading to chronic issues.
- Tissue degeneration is a common finding in sports-related tendon complaints and spontaneous ruptures.
- Specific systemic diseases or foreign bodies are rare causes of tendon pathology, accounting for less than 2% of cases.
Purpose of the Study:
- To investigate the primary causes of spontaneous tendon ruptures.
- To elucidate the role of degeneration versus specific diseases in tendon pathology.
- To explore the contribution of overuse and lifestyle factors to chronic tendon problems.
Main Methods:
- Histological analysis of over 1000 spontaneously ruptured tendons.
- Review of literature on systemic diseases, inherited conditions, and foreign bodies affecting tendons.
- Analysis of the proposed mechanisms of overuse in tendon injury pathogenesis.
Main Results:
- Degenerative changes were present in the vast majority of ruptured tendons analyzed.
- Specific disorders (inherited, systemic, foreign bodies) were found to be infrequent causes.
- Overuse is speculated to impair tendon repair by microtrauma, disrupt vasculature, and lead to hypoxia and impaired metabolism.
Conclusions:
- Spontaneous tendon rupture is predominantly a manifestation of underlying degenerative processes.
- Overuse and sedentary lifestyles likely contribute to tendon degeneration by impairing cellular repair and local circulation.
- Understanding these degenerative pathways is crucial for managing chronic tendon disorders.