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Aseptic bone necrosis in Japanese divers
The Bulletin of Tokyo Medical and Dental University
|June 1, 1976
Summary
Divers experienced a high rate of aseptic bone necrosis, particularly those with extensive experience and deep dives. Bone lesions can develop even after diving ceases, linked to air bubble formation and circulatory issues.
Area of Science:
- Occupational health
- Diving medicine
- Orthopedic pathology
Background:
- Investigating long-term health effects of professional diving.
- Assessing the prevalence of aseptic bone necrosis in divers.
Observation:
- Medical examinations conducted on 450 divers between 1969-1972.
- Aseptic bone necrosis identified in 59.5% of examined divers.
- Higher incidence observed in divers with over 5 years of experience and those diving deeper than 30 meters.
Findings:
- Bone lesions frequently affected the proximal femur and humerus.
- 73.1% of affected divers had a history of decompression sickness (the bends).
- Histopathology revealed air bubbles in bone marrow and circulatory disturbances as key factors.
Implications:
- Aseptic bone necrosis is a significant risk in professional diving.
- Lesions can progress and cause joint structural failure.
- Understanding pathogenesis is crucial for prevention and management strategies.