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Targeted Muscle Reinnervation: Surgical Protocol for a Randomized Controlled Trial in Postamputation Pain.

Emily Pettersen1, Paolo Sassu2, Francesca Alice Pedrini3

  • 1Center for Bionics and Pain Research; Center for Advanced Reconstruction of Extremities, Sahlgrenska University Hospital; Department of Electrical Engineering, Chalmers University of Technology; Bionics Institute.

Journal of Visualized Experiments : Jove
|March 25, 2024
PubMed
Summary

Targeted muscle reinnervation (TMR) surgery offers pain relief for amputees and improves prosthetic control. This technique reroutes nerves to enhance prosthetic function and reduce neuropathic pain.

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Area of Science:

  • Regenerative Medicine
  • Neurosurgery
  • Prosthetics Engineering

Background:

  • Prosthetics have advanced, with surgical techniques improving limb functionality.
  • Novel surgical interventions, like targeted muscle reinnervation (TMR), now alleviate postamputation neuropathic pain.
  • TMR aims to improve prosthetic control and reduce pain, with studies confirming its efficacy.

Purpose of the Study:

  • To provide a detailed, step-by-step description of the targeted muscle reinnervation (TMR) procedure.
  • To establish a standardized protocol for TMR as a foundation for a global clinical trial.
  • To evaluate TMR against other surgical techniques for managing postamputation pain.

Main Methods:

  • The article details the surgical steps of targeted muscle reinnervation (TMR).
  • Nerves are rerouted to "target" motor nerves and motor end plates in nearby muscles.
  • This forms the basis for an international, randomized controlled trial comparing TMR with other pain management techniques.

Main Results:

  • Targeted muscle reinnervation (TMR) has demonstrated effectiveness in mitigating postamputation pain, including residual and phantom limb pain.
  • The procedure enhances electromyography (EMG) signal amplification for improved prosthetic intuitive control.
  • TMR also prevents the formation of painful neuromas.

Conclusions:

  • Targeted muscle reinnervation (TMR) is a promising surgical technique for both pain management and functional improvement in amputees.
  • Standardizing TMR procedures is crucial for its widespread clinical adoption and further research.
  • Ongoing clinical trials will further elucidate the comparative benefits of TMR for postamputation pain.