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Related Experiment Videos

[Knee prostheses for tumors].

G Delepine1, N Delepine, J M Lewertowski

  • 1Département d'orthopédie et de traumatologie, hôpital Henri-Mondor, Créteil.

La Revue Du Praticien
|June 1, 1991
PubMed
Summary
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Advances in limb bone cancer surgery utilize knee megaprostheses. Combining custom titanium prostheses with allografts improves stability and function, especially for adolescents.

Area of Science:

  • Orthopedic Surgery
  • Oncology
  • Biomaterials Science

Context:

  • Conservative surgery for bone cancers necessitates limb-sparing procedures.
  • Knee megaprostheses are increasingly employed to reconstruct resected bone segments.
  • Traditional metallic prostheses present challenges in extensor mechanism reattachment and risk of decementation.

Purpose:

  • To evaluate the efficacy of a combined custom titanium prosthesis and bank allograft approach for knee reconstruction after bone cancer resection.
  • To address the limitations of purely metallic megaprostheses, particularly regarding functional outcomes and long-term stability in young patients.

Summary:

  • A combination of custom-made, long-tail titanium prostheses and bank allografts has been utilized since 1984 for limb-sparing surgery in bone cancer patients.

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  • The titanium component offers immediate structural integrity.
  • The allograft component contributes to long-term material stability and enhanced functional recovery.

    • Impact:

    • This combined approach mitigates the risks associated with purely metallic prostheses, such as decementation.
    • It provides a more robust solution for reconstructing the epiphysio-metaphysio-diaphyseal region, leading to improved functional results.
    • Offers a viable, long-term solution for adolescents with excellent prognoses undergoing limb salvage surgery.