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Related Experiment Video

Updated: May 10, 2026

Lower Limb Biomechanical Analysis of Healthy Participants
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Optimizing Free Functioning Muscle Transfer for Lower Limb Reconstruction: A Biomechanical Approach.

Ren-Wen Huang1,2,3, Chung-Chen Hsu1,2, Cheng-Hung Lin1,2,3

  • 1Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Linkou, Taiwan.

Seminars in Plastic Surgery
|August 11, 2025
PubMed
Summary

Free functioning muscle transfer (FFMT) optimizes lower limb reconstruction by balancing joint stability and active motion. Careful muscle selection, tensioning, attachment, and rehabilitation are key for restoring patient function.

Keywords:
donor muscle selectionfree functioning muscle transferfunctional outcomeslower extremity reconstruction

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Reconstructive Surgery

Background:

  • Free functioning muscle transfer (FFMT) is a critical technique for reconstructing complex lower limb defects.
  • Optimizing FFMT outcomes requires careful consideration of biomechanical principles.

Purpose of the Study:

  • To review and provide practical advice on optimizing free functioning muscle transfer outcomes in lower limb reconstruction.
  • To examine biomechanical considerations for balancing isometric and isotonic functions in FFMT.

Main Methods:

  • Review of biomechanical principles relevant to FFMT.
  • Analysis of donor muscle properties for specific reconstructive goals (knee extension, ankle dorsiflexion/plantarflexion).
  • Discussion of surgical techniques and rehabilitation strategies.

Main Results:

  • Successful FFMT depends on balancing joint stability (isometric) and active motion (isotonic) needs.
  • Specific donor muscles are recommended based on mechanical properties and functional requirements for knee and ankle reconstruction.
  • Key surgical factors include muscle selection, tensioning, tendon attachment, and rehabilitation timing.

Conclusions:

  • Optimized FFMT requires meticulous surgical technique and tailored rehabilitation.
  • This approach can significantly improve functional outcomes for patients with complex lower limb deficits.