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Uncemented Customized Hollow Stems in Tumor Endoprosthetic Replacement—A Good Opportunity to Protect the Adjacent Joint in Children?
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Uncemented Customized Hollow Stems in Tumor Endoprosthetic Replacement—A Good Opportunity to Protect the Adjacent Joint in Children?
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Journal Article
Uncemented Customized Hollow Stems in Tumor Endoprosthetic Replacement—A Good Opportunity to Protect the Adjacent Joint in Children?
2024
Overview
This study aimed to retrospectively analyze the follow-up results of cases in which the adjacent joint was preserved using a custom-made uncemented short-stem design (hollow stem) with optional external flanches in tumor endoprosthetic replacement due to bone sarcomas in 13 patients (with an average age of 9.6 years) between 2017 and 2023. Reconstructions were proximal femur (n = 6), intercalary femur (n = 4), intercalary tibia (n = 2), and proximal humerus (n = 1) tumor prostheses. The hollow body was used distally in 10 of the megaprotheses, proximally in 1, and both proximally and distally in 2 of them. The average distance from the joints was 6 cm in stems with flanches and 11.8 cm in stems without flanches. No aseptic loosening or deep infection was observed during an average follow-up of 34 months. Except for one case with a tibial intercalary prosthesis that needed a revision, all cases were well osteointegrated and all lower extremity cases could bear full weight without pain. In cases where the remaining bone stock after bone resection is insufficient for a standard stem implantation, reconstruction with a patient-specific short hollow-stem design appears to be a good alternative to protect healthy joints with high prosthesis survival and low revision rates in the short-term follow-up.
