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Related Experiment Videos

Total condylar knee replacement: a 20-year followup study.

J A Rodriguez1, H Bhende, C S Ranawat

  • 1Ranawat Orthopaedic Center, New York, NY 10021, USA.

Clinical Orthopaedics and Related Research
|July 14, 2001
PubMed
Summary

The Total Condylar Knee replacement demonstrates excellent durability over 20 years for patients with rheumatoid arthritis and osteoarthritis. Long-term follow-up shows good clinical scores and acceptable radiographic findings, indicating sustained performance.

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Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Rheumatology

Background:

  • The Total Condylar Knee (TCK) prosthesis was utilized for total knee replacements between 1976 and 1979.
  • This study focuses on the long-term outcomes of TCK in patients diagnosed with rheumatoid arthritis and osteoarthritis.

Purpose of the Study:

  • To evaluate the 20-year durability and clinical outcomes of the Total Condylar Knee replacement.
  • To assess radiographic findings and revision rates associated with the TCK prosthesis over two decades.

Main Methods:

  • A cohort of 220 total knee replacements in 164 patients were analyzed.
  • Follow-up data, including Knee Society scores and radiographic assessments, were collected for up to 22 years.
  • Revision causes and complications were documented.

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Main Results:

  • At an average 20-year follow-up, surviving patients showed good Knee Society clinical (88 points) and functional (58 points) scores.
  • Radiographic analysis revealed average overall alignment of 3 degrees valgus, with some lucencies noted around femoral and tibial components.
  • Fourteen revisions were performed, primarily for loosening (femoral, tibial, or both) and sepsis.

Conclusions:

  • The Total Condylar Knee replacement exhibits excellent durability and sustained clinical performance at the 20-year mark.
  • While some radiographic signs of wear and loosening were observed, the overall revision rate and complication profile suggest long-term efficacy.