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Fracture healing in metastatic bone disease
Clinical Orthopaedics and Related Research
|September 1, 1983
Summary
Cancer patients with pathologic fractures show improved healing rates with longer survival. Life expectancy over six months is key for bone healing, with internal fixation aiding union. Radiotherapy up to 3000 rad did not impede healing.
Area of Science:
- Oncology
- Orthopedic Surgery
- Pathology
Background:
- Pathologic fractures are common in cancer patients with metastatic disease.
- Understanding factors influencing bone healing in these patients is crucial for treatment planning.
Purpose of the Study:
- To assess the rate of osseous union in long bone pathologic fractures in cancer patients.
- To identify factors predicting fracture healing, including cancer type, survival, and treatment modalities.
Main Methods:
- Retrospective analysis of 129 pathologic fractures in 123 cancer patients with metastatic disease.
- Evaluation of fracture healing rates based on primary cancer type, survival duration, radiotherapy dose, and immobilization method.
Main Results:
- Overall fracture healing rate was 35%.
- Fractures from multiple myeloma, hypernephroma, and breast carcinoma showed healing rates of 67%, 44%, and 37%, respectively.
- No healing observed in lung carcinoma fractures; patients survived <6 months.
- Fracture union occurred in 74% of patients surviving >6 months.
- Internal fixation increased union rate by 23% compared to cast immobilization.
- Radiotherapy dose ≤3000 rad did not inhibit callus formation.
Conclusions:
- Patient survival exceeding six months is the primary determinant of osseous healing in pathologic fractures.
- Internal fixation is superior to cast immobilization for promoting fracture union.
- Specific cancer types influence healing potential, with lung carcinoma indicating a poor prognosis.