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Related Experiment Videos

Modular, mobile-bearing hinge total knee arthroplasty.

R E Jones1, R L Barrack, J Skedros

  • 1Total Joint Restoration Orthopedic Specialists, Dallas, TX 75235, USA.

Clinical Orthopaedics and Related Research
|November 22, 2001
PubMed
Summary

Third-generation modular, mobile-bearing, hinge knee arthroplasty systems show excellent midterm results. These advanced systems reduce stress and offer a reliable solution for complex revision knee surgeries.

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Area of Science:

  • Orthopaedic Surgery
  • Biomedical Engineering

Background:

  • Early hinge total knee arthroplasty (TKA) designs had high complication and failure rates.
  • Previous designs were susceptible to deleterious stresses, leading to implant failure.

Purpose of the Study:

  • To evaluate the midterm outcomes of the S-ROM Hinge Knee System.
  • To assess the efficacy of a modular, mobile-bearing, linked knee system in complex revision TKA.

Main Methods:

  • Combined series from Barrack et al and Jones et al.
  • 30 knees with significant soft and hard tissue deficiencies were analyzed.
  • Mean follow-up of 49 months.

Main Results:

  • Significant improvement in Knee Society clinical scores (52 to 134 points).

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  • No mechanical failures of the implants were reported.
  • Radiographic analysis showed bone apposition and positive remodeling with press-fit diaphyseal stems and metaphyseal sleeves.

    • Conclusions:

    • The S-ROM Hinge Knee System demonstrates excellent midterm results.
    • This modular, mobile-bearing, linked system is a viable option for salvage knee arthroplasty in complex cases.
    • Orthopaedic surgeons can confidently select this system for challenging revision TKA.