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Updated: Dec 8, 2025

Modified Posterior Vertebral Column Resection for Patients with Thoracolumbar Kyphotic Deformity
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Pyrocardan® implant after failed trapeziectomy.

M Pouedras1, C Chaves1, E Gaisne1

  • 1Institut de la Main Nantes-Atlantique, Santé Atlantique, Avenue Claude Bernard, 44800 Saint-Herblain, France.

Hand Surgery & Rehabilitation
|September 22, 2020
PubMed
Summary

Revision surgery using a pyrocarbon interposition implant (Pyrocardan®) effectively reduced pain and improved function for patients experiencing trapeziectomy failure. This treatment offers a viable medium-term solution for severe first metacarpal subsidence.

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Reconstructive Surgery

Background:

  • Trapeziectomy is a common procedure for thumb base osteoarthritis.
  • Failures can occur due to persistent pain and impingement.
  • Revision strategies are needed for failed trapeziectomy cases.

Purpose of the Study:

  • To evaluate the medium-term outcomes of Pyrocardan® interposition arthroplasty after failed trapeziectomy.
  • To assess pain, function, range of motion, and strength following revision surgery.
  • To determine patient satisfaction and radiological results.

Main Methods:

  • Retrospective analysis of eight female patients (average age 63) undergoing Pyrocardan® implant after trapeziectomy failure.
  • Average follow-up of 54 months.
Keywords:
Echec de trapézectomieImplantInterpositionPyrocarbonPyrocarboneTrapeziectomy failure

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  • Clinical and radiological assessments including VAS, QuickDASH, PRWE, range of motion, and strength.

    • Main Results:

    • Significant reduction in pain (VAS 6.3 to 2.5) and improvement in function (QuickDASH 52.9 to 30.7, PRWE 49.1 to 31.0).
    • No significant changes in strength or range of motion.
    • Seven out of eight patients reported satisfaction; no implant dislocation or adverse bone reaction observed.

    Conclusions:

    • Pyrocardan® interposition arthroplasty is an effective medium-term solution for revision of failed trapeziectomy.
    • The procedure successfully alleviates pain and enhances function in cases of severe first metacarpal subsidence.
    • This implant offers a safe and satisfactory option for complex thumb base reconstruction.