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Updated: May 27, 2026
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Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
Published on: September 9, 2020
Experience with extendable prostheses for malignant bone tumors in children.
Yukihiro Yoshida1, Shunzo Osaka, Yasuaki Tokuhashi
1Department of Orthopedic Surgery, Nihon University School of Medicine, 30-1 Oyaguchikami-cho, Itabashi-ku, Tokyo, Japan. yyoshida@med.nihon-u.ac.jp
Journal of the Formosan Medical Association = Taiwan Yi Zhi
|November 29, 2011
Summary
Extendable prostheses are useful for limb reconstruction in children with bone tumors, allowing controlled leg length correction. This study found them effective, with a mean length gain of 49.7 mm and final discrepancy of 29.2 mm.
Area of Science:
- Pediatric Orthopedics
- Skeletal Reconstruction
- Oncology
Background:
- Limb reconstruction after malignant bone tumor resection in children often requires managing leg length discrepancies.
- Extendable prostheses offer a method for controlled leg length correction during growth.
Purpose of the Study:
- To evaluate the clinical usefulness of extendable prostheses in pediatric limb reconstruction following bone tumor resection.
Main Methods:
- Retrospective analysis of 11 children (aged 7-16) who received extendable prostheses for limb reconstruction between 1994-2008.
- Data collected included functional scores, radiographic outcomes, lengthening procedures, total length gain, complications, and final leg length discrepancy.
Main Results:
- Mean functional score was 84% (range 52-96%).
- Average of 2.8 lengthening procedures resulted in a mean total length gain of 49.7 mm.
- Final leg length discrepancy averaged 29.2 mm, with some cases showing fair to poor bone remodeling.
Conclusions:
- Extendable bone prostheses are a valuable tool for limb reconstruction in pediatric oncology.
- Recommended for children aged 10+ with expected discrepancies up to 4 cm, particularly for distal femur lesions with adequate soft tissue coverage.
