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Bone death in transient regional osteoporosis
C R Dunstan1, R A Evans, N M Somers
1Metabolic Unit, Concord Hospital, Sydney, Australia.
Bone
|January 1, 1992
Summary
This case study highlights transient regional osteoporosis in a middle-aged man experiencing hip and knee pain. Lumbar sympathectomy provided relief, suggesting a link to sympathetic nervous system dysfunction.
Area of Science:
- Orthopedics
- Bone Metabolism
- Pain Management
Background:
- Transient regional osteoporosis is a rare condition characterized by temporary bone density loss.
- Understanding its pathophysiology is crucial for effective treatment strategies.
Observation:
- A 48-year-old male presented with transient regional osteoporosis, initially affecting the hip and later the knee.
- Radiological and bone scan imaging revealed osteoporotic changes in the femur and tibia near the painful knee, with increased uptake in the medial femoral condyle.
Findings:
- Histological examination of the femoral condyle showed areas of necrotic bone undergoing resorption and increased bone formation.
- The adjacent tibial bone appeared histologically normal.
- The patient experienced significant pain relief following a lumbar sympathectomy.
Implications:
- The findings suggest a potential link between transient regional osteoporosis, avascular necrosis of bone, and reflex sympathetic dystrophy.
- This case underscores the role of the sympathetic nervous system in bone metabolism and pain.
- Further research is warranted to elucidate the precise mechanisms involved in this complex disorder.