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Experience in Reconstruction for Small Digital Defects With Free Flaps.

Min-Hsiang Hung1, Kuo-Feng Huang, Haw-Yen Chiu

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Free flaps, including groin and toe flaps, offer a reliable and safe method for reconstructing digits with soft tissue or bone loss. These advanced techniques provide excellent aesthetic and functional outcomes for digital reconstruction.

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Area of Science:

  • Plastic Surgery
  • Reconstructive Surgery
  • Microsurgery

Background:

  • Traumatic digit injuries often result in significant soft tissue or bone loss, necessitating complex reconstruction.
  • Traditional methods like local, pedicled, or distant flaps have limitations for extensive digital defects.
  • Free tissue transfer presents a viable option for select cases requiring advanced reconstructive solutions.

Purpose of the Study:

  • To evaluate the efficacy and safety of various free flaps in digital reconstruction.
  • To present the application of specific free flaps, including groin and toe flaps, for complex digital defects.
  • To highlight the versatility of free flaps in addressing soft tissue, bone, and tendon reconstruction needs.

Main Methods:

  • Retrospective analysis of 19 digits reconstructed using 16 free flaps.
  • Flap types included free groin skin, osteocutaneous, and chimeric flaps, as well as second dorsal metacarpal artery and partial toe flaps.
  • Data collected on flap survival, size, operative time, and reconstructive outcomes.

Main Results:

  • All 16 free flaps (totaling 19 digits reconstructed) survived without necrosis, demonstrating high reliability.
  • Average flap size was 4.7 × 2.0 cm, with an average operative time of 6.0 hours.
  • Specific flaps showed distinct advantages: groin flaps for coverage and lengthening, metacarpal flaps for tendon and soft tissue, and toe flaps for pulp reconstruction.

Conclusions:

  • Free flap transfer is a safe and reliable alternative for digital reconstruction, offering versatile solutions.
  • Free groin flaps provide chimeric and osteocutaneous options, while second dorsal metacarpal artery flaps offer tenocutaneous benefits.
  • Free partial toe flaps are excellent for aesthetic and functional pulp reconstruction.