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Ectopic calcification following tibial fracture: property analysis
1Department of Orthopaedics, Shinshu University School of Medicine, Matsumoto City, Japan.
Skeletal Radiology
|December 29, 2000
Summary
This study details ectopic calcification in a patient with a toe deformity, likely caused by past deep posterior compartment syndrome. Analysis revealed carbonate-apatite, not bone, offering insights into this rare condition.
Area of Science:
- Orthopedics
- Biomaterials Science
- Pathology
Background:
- Deep posterior compartment syndrome can lead to long-term complications.
- Ectopic calcification is a pathological process where calcium deposits form in soft tissues.
Observation:
- A patient presented with a 18-year-old tibial fracture and a subsequent toe flexion deformity.
- Magnetic resonance angiography indicated past peroneal artery damage, suggesting deep posterior compartment syndrome.
- Radiographs and CT revealed a large radiopaque mass in the flexor hallucis longus muscle.
Findings:
- Surgical resection of the mass significantly improved the toe deformity.
- Microscopic and chemical analyses confirmed the mass was ectopic calcification, not ossification.
- Electron microscopy showed rod-like structures, and X-ray diffraction identified a carbonate-containing apatite composition.
Implications:
- This case highlights a rare long-term consequence of deep posterior compartment syndrome.
- Understanding the composition of ectopic calcifications can inform future treatment strategies.
- Further research into the mechanisms of ectopic calcification is warranted.