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Evaluation of an Advanced Lower Extremity Neuroprostheses

Evaluation of Advanced Lower Extremity Neuroprostheses

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00623389
Acronym
LE-IST
Enrollment
10
Registered
2008-02-26
Start date
2018-06-01
Completion date
2027-12-31
Last updated
2026-07-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Paralysis, Paraplegia, Spinal Cord Injuries, Stroke, Tetraplegia

Keywords

Neurologic disorders, Rare disease, Spinal cord injuries, Stroke, Paraplegia, Tetraplegia

Brief summary

The purpose of this study is to evaluate a surgically implanted functional electrical stimulation (FES) system to facilitate exercise, standing, stepping and/or balance in people with various degrees of paralysis.

Detailed description

Protocol Outline: Patents undergo surgery in which electrodes are implanted into muscles of the trunk and legs. Electrode leads are connected to an stimulator/telemeter. Following implantation, patients undergo training in standing, transfers and other advanced mobility skills using the functional electrical stimulation system. A prescribed course of exercise, functional training and rehabilitation with the implanted stimulation system, followed by laboratory assessments of strength, balance and functional abilities with and without the system, as well as the technical performance of the implanted components. Home-based training follows prior to discharge for home use of the system. Patients are followed at 6 and 12 months after discharge and then annually thereafter.

Interventions

DEVICEIST (Implanted Stimulator-Telemeter)

Pre-surgical exercise with surface electrical stimulation, surgery including electrode and IST- implanted pulse generator insertion, exercise and physical therapy with the implanted system, functional training and laboratory assessment of clinical and technical performance.

Sponsors

Case Western Reserve University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DEVICE_FEASIBILITY
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
21 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

Phase I Inclusion Criteria 1. Skeletal maturity and ability to sign informed consent (\>18 years) 2. Non-ventilator dependent paralysis resulting from injuries such as: mid cervical/thoracic (C4 or below) spinal cord injuries, poststroke hemiparesis, TBI, or MS, affecting the trunk and/or lower limbs 3. Innervated and excitable lower extremity and trunk musculature 4. Adequate social support and stability 5. Willingness to comply with follow-up procedures Phase I

Exclusion criteria

1. Non-English speaking 2. Females who are pregnant 3. Current pressure injuries that would be exacerbated by study activities 4. Severe contractures or uncontrolled spasticity of any major joint of the upper or lower extremities that results in a fixed deformity that would interfere with study activities 5. History of spontaneous fractures or other evidence of excessively low bone density 6. History of vestibular dysfunction, balance problems, or spontaneous falls 7. Acute and or/untreated orthopedic problems that would prevent a participant from weight bearing or exercising such as a dislocation or fracture.

Design outcomes

Primary

MeasureTime frameDescription
Device reliability and technical performance measuring changes in standing duration from baseline at discharge to 12 months after dischargeChange from immediately after intervention and 1 year after interventionRepeated measures of standing duration in minutes
Device reliability and technical performance measuring changes in standing loads from baseline at discharge to 12 months after dischargeChange from immediately after intervention and 1 year after interventionRepeated measures of arm/leg loading measured in Kg
Device reliability and technical performance measuring changes in walking distance from baseline at discharge to 12 months after dischargeChange from immediately after intervention and 1 year after interventionRepeated measures of walking distance in meters
Device reliability and technical performance measuring changes in walking duration from baseline at discharge to 12 months after dischargeChange from immediately after intervention and 1 year after interventionRepeated measures of walking time in minutes

Secondary

MeasureTime frameDescription
Device operability measuring changes in functional activities of daily living from baseline at discharge and 12 months after dischargeChange from immediately after intervention and 1 year after interventionRepeated measures of standing reach in cm, and transfer height in cm

Countries

United States

Contacts

CONTACTLisa M Lombardo, MPT
lisa.lombardo2@va.gov216-791-3800
CONTACTMaura Malenchek, PTA
maura.malencheck@va.gov216-791-3800
PRINCIPAL_INVESTIGATORRonald J Triolo, Ph.D.

Case Western Reserve University

PRINCIPAL_INVESTIGATORMusa L Audu, Ph.D.

Louis Stokes Cleveland VA Medical Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 11, 2026