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Proximally cemented versus uncemented Freeman-Samuelson knee arthroplasty. A prospective randomised study.

B E Albrektsson1, L V Carlsson, M A Freeman

  • 1Department of Orthopaedics, Ostra Hospital, Gothenburg, Sweden.

The Journal of Bone and Joint Surgery. British Volume
|March 1, 1992
PubMed
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Adding cement to Freeman-Samuelson total knee prostheses significantly reduced tibial component migration and subsidence. Clinical results were similar initially, but uncemented knees showed higher revision rates later.

Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Medical device research

Background:

  • Total knee prostheses are used to treat knee osteoarthritis.
  • Tibial component migration can lead to poor clinical outcomes.
  • Cemented fixation is a common method for prosthesis implantation.

Purpose of the Study:

  • To evaluate the effect of cement on tibial component migration in Freeman-Samuelson total knee prostheses.
  • To compare the migration of cemented versus uncemented tibial components.
  • To assess the long-term clinical outcomes associated with cemented and uncemented fixation.

Main Methods:

  • Roentgen stereophotogrammetry was used to measure tibial component migration.
  • The study included 13 uncemented and 16 cemented Freeman-Samuelson total knee prostheses.

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  • Migration was assessed over a one-year period.

    • Main Results:

    • Cemented tibial components showed a significant reduction in migration (mean 1.5 mm to 0.5 mm, p < 0.01).
    • Cementation also led to a significant reduction in pure subsidence.
    • Clinical results were similar at one year, but one uncemented knee required revision by three years.

    Conclusions:

    • Cemented fixation significantly reduces tibial component migration and subsidence in Freeman-Samuelson total knee prostheses.
    • While short-term clinical outcomes may be comparable, uncemented fixation may be associated with a higher risk of revision surgery.
    • Cementation appears to be a beneficial adjunct for improving the stability of this type of knee prosthesis.