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Advancement in Vascularized Toe PIP Joint Transfers: Technical Evolution and Current Practices.

Che-Hsiung Lee1,2,3, Yu-Te Lin1,2,3

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Summary

Vascularized toe transfers for finger joint reconstruction face extension lag challenges. Customized strategies based on toe anatomy and improved central slip reconstruction techniques now yield consistent functional results.

Keywords:
central slip reconstructionextensor mechanism reconstructionfinger joint reconstructionproximal interphalangeal jointvascularized toe joint transfer

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Area of Science:

  • Orthopedic Surgery
  • Hand Surgery
  • Microsurgery

Background:

  • Vascularized toe proximal interphalangeal joint (IPJ) transfer is a biological reconstructive option for posttraumatic finger joint defects.
  • Extension lag remains a significant complication following these transfers, impacting functional outcomes.
  • Anatomical studies have identified two distinct toe extensor mechanisms, influencing surgical approaches.

Purpose of the Study:

  • To review advancements in vascularized toe transfer for finger joint reconstruction.
  • To highlight the importance of understanding toe extensor anatomy for surgical planning.
  • To discuss current techniques for addressing extension lag and improving functional results.

Main Methods:

  • Review of anatomical studies on toe extensor mechanisms.
  • Analysis of various surgical techniques for central slip reconstruction.
  • Comparison of functional outcomes between different reconstruction methods.

Main Results:

  • Two toe extensor patterns identified: Type 1 (no central slip) and Type 2 (with central slip).
  • Customized reconstruction strategies improve outcomes based on donor and recipient site conditions.
  • Techniques like centralization, direct repair, and central slip reconstruction have been developed.
  • The 'Te' technique minimizes bone manipulation.
  • Effective central slip reconstruction leads to consistent functional results.

Conclusions:

  • Understanding toe extensor anatomy is crucial for successful finger joint reconstruction.
  • Tailored surgical strategies and meticulous central slip reconstruction are key to overcoming extension lag.
  • Current evidence supports the efficacy of various central slip reconstruction techniques in achieving reliable functional recovery.