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Reconstructing humerus defects after tumor resection using an intramedullary cortical allograft strut
Hsin-Nung Shih1, Lih-Yuann Shih, Chun-Ying Cheng
1Second Division of Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, ROC. aronc@cgmh.org.tw
Chang Gung Medical Journal
|January 10, 2003
Summary
Allogenous cortical struts effectively treat large humeral defects from benign bone lesions, providing mechanical support and promoting bone healing. Mid-term results show good functional outcomes and graft incorporation, particularly in children.
Area of Science:
- Orthopedic Surgery
- Bone Reconstruction
- Musculoskeletal Oncology
Background:
- Humerus is a common site for benign bone lesions.
- Reconstruction is necessary after lesion removal or pathological fractures.
- Allogenous cortical struts are a potential treatment for large humeral defects.
Purpose of the Study:
- To review clinical outcomes of allogenous cortical struts for large humeral defects.
- To investigate the mid-term fate of implanted allografts.
- To evaluate functional and radiographic results.
Main Methods:
- 29 patients with humeral lesions treated from 1988-1997.
- Tumor eradication followed by intramedullary allogenous cortical strut reconstruction.
- No additional internal fixation was used.
Main Results:
- Mean defect size was 92 ml.
- Mean follow-up of 8.8 years.
- All patients had good to excellent functional results; one recurrence treated successfully.
- Complete defect healing with partial to complete allograft incorporation observed.
- Children showed better allograft incorporation than adults.
Conclusions:
- Intramedullary allogenous cortical struts provide mechanical splinting and biological bone grafting.
- Combined use with cancellous bone grafts ensures stability and healing for large defects.
- Adult allograft incorporation is slow and may be incomplete.