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Published on: February 25, 2020
A neuroprosthesis for high tetraplegia
D T Yu1, R F Kirsch, A M Bryden
1Department of Physical Medicine and Rehabilitation, MetroHealth Medical Center, Cleveland, Ohio 44109, USA. dyu@metrohealth.org
The Journal of Spinal Cord Medicine
|October 6, 2001
Summary
A new neuroprosthesis restored shoulder and elbow function for a patient with C3 complete tetraplegia. This implantable device enabled the individual to perform daily tasks, improving quality of life.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Rehabilitation Medicine
Background:
- Case report detailing a novel neuroprosthesis for C3 complete tetraplegia.
- Patient presented with chronic paralysis affecting shoulder and elbow function.
- Pre-implantation electrodiagnostic tests indicated significant denervation from C5 to T1.
Observation:
- Thirteen intramuscular electrodes implanted in shoulder and elbow muscles.
- Subject underwent an 8-week conditioning program to enhance muscle strength and endurance.
- A headrest-mounted switch and contralateral shoulder sensor controlled the neuroprosthesis.
Findings:
- Restored active range of motion: 60° shoulder abduction, 45° shoulder flexion, 110° elbow flexion.
- Achieved functional independence in feeding (e.g., self-feeding mashed potatoes).
- Stimulated elbow extension showed improvement, nearing full extension with gravity eliminated.
Implications:
- Demonstrates the potential of neuroprosthetic devices to restore upper limb function in severe spinal cord injury.
- Highlights the importance of pre-habilitation and customized control interfaces.
- Suggests a pathway for improving functional independence and quality of life for individuals with tetraplegia.
