About this trial
Restoring upper extremity function in patients with cervical spinal cord injury is extremely important for patients' independence and quality of life.
At present, there are limited options for hand or arm reanimation in this patient population. Nerve transfer is one such option that can partially restore the natural movement of hand or arm function in select patients.
The investigators are interested in understanding whether recovery of hand or arm motor function after nerve transfer can be augmented by cervical epidural spinal cord stimulation.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥18 years and ≤65
Provides informed consent
History of upper extremity nerve transfer > 6 months prior to enrollment
Completion of standard post-nerve transfer occupational therapy
Disqualifiers
Central nervous system (CNS) malignancy
A contraindication to the SCS procedure
Diagnosis that precludes the patient from full participation in the protocol
A functional implanted device (pacemaker, vagus nerve device, baclofen pump)
Trial design
Single group
Treatments tested in this trial
Percutaneous spinal cord stimulation
DeviceThe parameters of percutaneous cervical spinal cord stimulation leads will be adjusted for optimal upper extremity motor function.
Treatment groups
Trial outcomes
Primary outcomes
Nerve transfer recipient muscle strength
Change in Medical Research Council (MRC) grade of recipient nerve transfer muscle group with spinal cord stimulation activated. MRC ranges from 0 (no visible muscle contraction) to 5 (normal muscle strength against full resistance). A larger number represents a better outcome.
Secondary outcomes
Nerve transfer recipient muscle force
Change in muscle force generated by recipient nerve transfer muscle group with spinal cord stimulation activated. Muscle force is measured with a hand-held dynamometer. This is measured in Newtons, with a larger number meaning greater force and a better outcome.
Neck and upper extremity pain
Change in neck and upper extremity pain measured with the Numeric Rating Scale (NRS). NRS scale ranges from 0 (No pain) to 10 (worst possible pain), with a lower number representing a better outcome. A positive change in NRS from baseline to follow-up visits suggests improvement of pain.
Amplitude of percutaneous stimulation
Optimized amplitude of percutaneous stimulation for each upper extremity muscle for voluntary hand/arm motor function will be documented. Amplitude is measured in miliAmperes.
Frequency of percutaneous stimulation
Optimized frequency of percutaneous stimulation for each upper extremity muscle for voluntary hand/arm motor function will be documented. Frequency is measured in Hz (Hertz).
Locations
Sponsors and contacts
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