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Related Experiment Videos

100-year-old patient with pressfit prosthesis: a postmortem retrieval study

D K Lester1, P Campbell

  • 1Best Practice Institute Community Hospitals of Central California, Fresno, USA.

American Journal of Orthopedics (Belle Mead, N.J.)
|January 1, 1996
PubMed
Summary

Cementless pressfit hip hemiarthroplasty in a 100-year-old patient demonstrated stable bone fixation and prosthetic stability. This suggests successful osteointegration is possible in elderly individuals without a complete "fit and fill" implant.

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Geriatric Medicine

Background:

  • Hip fractures are common in the elderly, often requiring surgical intervention.
  • Cementless hemiarthroplasty offers a potential solution for hip fracture treatment.
  • Assessing long-term implant stability and bone integration in very elderly patients is crucial.

Observation:

  • A 100-year-old female patient received a cementless pressfit hemiarthroplasty for a hip fracture.
  • The patient remained ambulatory and pain-free for 45 months post-surgery until death.
  • Femurs were retrieved for comprehensive clinical, radiographic, histologic, and densitometric analysis.

Findings:

  • Histological analysis revealed 14-25% intimate bone contact with the implant component.

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  • Bone densitometry showed stability, comparable to the contralateral femur, with minor variations.
  • Minimal osteoclast activity and inflammation were observed, with new bone formation primarily at implant corners.

    • Implications:

    • Cementless pressfit fixation is a viable option for hip fracture treatment in elderly patients.
    • Achieving stable osteointegration and prosthetic stability is possible even without a complete implant fit.
    • This study supports the potential for long-term success of cementless implants in a geriatric population.