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KMID : 0361620130480010009
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Journal of the Korean Orthopaedic Association
2013 Volume.48 No. 1 p.9 ~ p.15
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Intercalary Allograft Reconstruction after Malignant Tumor Resection around the Knee
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Choi Eun-Seok
Han Il-Kyu
Cho Hwan-Seong
Kang Hyun-Kyu
Kim Jun-Hyuk
Kim Han-Soo
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Abstract
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Purpose: We aimed to assess the treatment outcomes and factors affecting bone union of intercalary allograft reconstruction after primary malignant bone tumor resection around the knee.
Materials and Methods: Twenty-one patients who underwent intercalary allograft reconstruction after resection of a malignant tumor of femur or tibia were retrospectively reviewed. The average follow-up period was 46.4 months. Location of the tumor was as follows: femur in 12 cases and tibia in 9. Osteosarcoma was the most common tumor (12 cases). Intercalary allograft was internally fixed with an intramedullary (IM) nail in 3 cases, with a plate in 12 cases and with an IM nail combined with a plate in 6 cases. The survival of the grafts and functional outcomes were evaluated. Factors affecting bone union and complications were assessed.
Results: All allografts survived without removal. The average Musculoskeletal Tumor Society functional score was 27. The mean length of the allograft was 16.7 cm and bony union took 10.9 months, in average. Nonunion occurred in 6 cases: at the diaphyseal side in 3, and the remaining 3 at the metaphyseal side. The graft length was shorter than average in all the diaphyseal side nonunion cases and longer than average in all the metaphyseal side nonunion cases. All cases of nonunion obtained bone union after additional operations (autologous bone graft alone: 1, bone graft with hardware change: 5).
Conclusion: Survival and functional outcomes of intercalary allograft were satisfactory. Long allograft showed a tendency of fracture or nonunion at the metaphyseal side. Nonunion could be managed with additional operation without allograft removal.
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KEYWORD
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osteosarcoma, intercalary reconstruction, allograft reconstruction
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