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[Limb salvage surgery using massive allografts in malignant bone tumors]
1Institute of Orthopaedics, Xijing Hospital, Fourth Milcitary Medical University, Xi'an.
Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|April 1, 1997
Summary
Segmental allografts offer biological healing and good long-term results for limb tumor reconstruction. This study found them a viable option for skeletal defects after malignant tumor resection.
Area of Science:
- Orthopedic Surgery
- Skeletal Reconstruction
- Oncology
Background:
- Segmental allografts present advantages over arthroplasty, including biological healing and tendon/ligament attachment.
- Malignant bone tumors in extremities necessitate complex reconstruction strategies.
Purpose of the Study:
- To evaluate the efficacy of segmental allografts in reconstructing skeletal defects after malignant tumor resection.
- To assess functional outcomes and complications associated with segmental allograft use.
Main Methods:
- Retrospective analysis of 35 patients undergoing extremity malignant tumor resection and segmental allograft reconstruction since 1983.
- Utilized five types of allografts: intercalary hemicylinder, intercalary cylinder, partial osteoarticular, total osteoarticular, and allograft-prosthetic composite.
- All patients received adjunctive chemotherapy; follow-up ranged from 6 months to 10 years.
Main Results:
- 25 patients were disease-free, 4 survived as tumor carriers, and 6 died. Complications occurred in 28.6% (infection, resorption, recurrence, nonunion).
- Intercalary grafts yielded better functional results compared to osteoarticular grafts.
- Bone scans showed creeping substitution in 4 patients 2-4 years post-operation.
Conclusions:
- Segmental allograft reconstruction is a viable and predictable method for skeletal defects post-malignant tumor resection.
- Intercalary allografts provide superior functional outcomes.
- Long-term monitoring is essential due to potential complications like infection and recurrence.