[Agonist-antagonist myoneural interface (AMI) : Innovative treatment option for lower limb amputees?]

Area of Science:

• Biomedical Engineering
• Neuroprosthetics
• Surgical Innovation

Context:

• Limb loss presents challenges in restoring natural motor control and proprioception.
• Traditional prosthetic interfaces often lack intuitive control and sensory feedback.
• The agonist-antagonist myoneural interface (AMI) offers a novel surgical approach.

Purpose:

• To introduce and describe the agonist-antagonist myoneural interface (AMI) technique.
• To explain the mechanism by which AMI restores proprioception and enhances motor control.
• To compare AMI with traditional surgical methods for prosthetic integration.

Summary:

• AMI utilizes transposed agonist-antagonist muscle pairs to create a gliding mechanism, generating proprioceptive signals.
• These signals are transmitted to the central nervous system, allowing users to perceive prosthesis joint position.
• This bidirectional communication facilitates more intuitive control and improved sensory discrimination.

Impact:

• AMI enhances the integration of prostheses into the user's neural network.
• It reduces the cognitive burden associated with prosthetic use compared to myodesis or myoplasty.
• AMI promotes a more natural sense of movement and embodiment, significantly improving quality of life for individuals with limb loss.