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Related Experiment Videos

Unsatisfactory results with a ceramic total hip prosthesis.

O M Mahoney1, J H Dimon

  • 1Peachtree Orthopaedic Clinic, Piedmont Hospital, Atlanta, Georgia 30367.

The Journal of Bone and Joint Surgery. American Volume
|June 1, 1990
PubMed
Summary

The Autophor ceramic total hip prosthesis showed disappointing results, with significant femoral component subsidence and loosening in many patients. Researchers no longer recommend this specific hip implant due to these issues.

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science

Background:

  • Total hip replacement is a common procedure for debilitating hip conditions.
  • Ceramic prostheses are utilized for their wear resistance and biocompatibility.

Purpose of the Study:

  • To evaluate the clinical outcomes and survivorship of the Autophor ceramic total hip prosthesis.
  • To identify potential complications associated with this specific implant design.

Main Methods:

  • Retrospective review of 42 Autophor ceramic total hip replacements in 34 patients.
  • Follow-up included physical examination, radiographs, questionnaires, and modified Harris hip scores.
  • Patient diagnoses included avascular necrosis, degenerative arthritis, and rheumatoid arthritis.

Main Results:

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  • Significant femoral component subsidence (>5mm) observed in multiple cases.
  • Radiographic evidence of progressive loosening in 15 hips.
  • 11 of 27 primary hip replacement patients reported pain limiting activities, with 3 requiring revision.

Conclusions:

  • The Autophor ceramic total hip prosthesis demonstrated a high rate of subsidence and loosening.
  • Clinical outcomes were disappointing, leading to the discontinuation of its use.
  • Further investigation into implant design and fixation is warranted for similar prostheses.