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Epi Stim to Facilitate Standing and Stepping

Primary Purpose

Spinal Cord Injury

Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
Standing and Stepping with spinal cord Epidural Stimulation
Sponsored by
University of Louisville
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional basic science trial for Spinal Cord Injury focused on measuring Epidural Stimulation

Eligibility Criteria

18 Years - 75 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • All research participants, irrespective of age or sex, will meet the following criteria:

    • stable medical condition without cardiopulmonary disease or dysautonomia that would contraindicate standing or stepping with BWST;
    • no painful musculoskeletal dysfunction, unhealed fracture, contracture, pressure sore, or urinary tract infection that might interfere with stand or step training;
    • no clinically significant depression or ongoing drug abuse;
    • no current anti-spasticity medication regimen;
    • non-progressive SCI above T10;
    • must not have received botox injections in the prior six months;
    • be unable to stand or step independently;
    • at least one-year post injury; and
    • must be at least 18 years of age.

In addition, all subjects must satisfy each of the three conditions of the functional neurophysiological assessment described below.

Functional Neurophysiological Assessment (FNPA). We will use FNPA to screen potential research participants based on specific neurophysiological inclusion criteria. Participants must have no volitional control of movement below the level of the lesion, but must retain some brain influence on spinal reflexes. Our target population, which will be identified by FNPA, cannot be identified reliable using traditional assessments: hence individual subjects may be classified widely as Class A, B, or C on the ASIA SCI scale. We will include only subjects who fulfill the following three requirements:

  • There is no descending volitional control of movement below the lesion
  • Segmental reflexes remain functional below the lesion
  • Brain influence on spinal reflexes is retained

Exclusion Criteria:

  • Ventilatory dependent
  • painful musculoskeletal function, unhealed fracture, contracture, or pressure sore that might interfere with training;
  • clinically significant depression or ongoing drug abuse;
  • cardiovascular, respiratory, bladder or renal disease unrelated to SCI;
  • severe anemia (Hgb<8 g/dL) or hypovolemia; and
  • HIV or AIDS related illness.

Sites / Locations

  • University of Louisville

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Epidural Stimulator

Arm Description

Eligible participants will be implanted with 16-electrode epidural array in the T11-L1 area of the spinal cord

Outcomes

Primary Outcome Measures

Change From Baseline of Lower Extremity Independence Time During 10 Min Standing Bout After 160 Sessions (1 Year)
We will measure the amount of time individuals are able to stand without manual assistance (independently) throughout a 10 min bout
Change From Baseline of Stepping Independence Time During 6 Min Stepping Bout After 160 Sessions (1 Year)
We will measure the number of steps individuals are able to take without manual assistance (independently) throughout a 6 min stepping bout

Secondary Outcome Measures

Change From Baseline of Number of Consecutive Hip Flexion Repetitions Performed Within One Minute After 160 Sessions (1 Year)
We will measure the ability of the individuals to perform consecutive hip flexion repetitions with stimulation during a 1 minute period

Full Information

First Posted
January 12, 2015
Last Updated
April 21, 2022
Sponsor
University of Louisville
Collaborators
University of California, Los Angeles, Christopher Reeve Paralysis Foundation, Kessler Foundation, The Leona M. and Harry B. Helmsley Charitable Trust, National Institute for Biomedical Imaging and Bioengineering (NIBIB)
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1. Study Identification

Unique Protocol Identification Number
NCT02339233
Brief Title
Epi Stim to Facilitate Standing and Stepping
Official Title
Spinal Epidural Electrode Array to Facilitate Standing and Stepping After Spinal Cord Injury
Study Type
Interventional

2. Study Status

Record Verification Date
April 2022
Overall Recruitment Status
Completed
Study Start Date
January 1, 2010 (Actual)
Primary Completion Date
October 3, 2019 (Actual)
Study Completion Date
October 3, 2019 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
University of Louisville
Collaborators
University of California, Los Angeles, Christopher Reeve Paralysis Foundation, Kessler Foundation, The Leona M. and Harry B. Helmsley Charitable Trust, National Institute for Biomedical Imaging and Bioengineering (NIBIB)

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief Summary
The overall aim is to assess whether task specific locomotor training and spinal cord electrical stimulation (SCES) can induce neural reorganization of the functionally isolated human spinal cord to improve standing and stepping in individuals with functionally complete SCI. The investigators propose that locomotor training will result in generation of more effective standing and stepping efferent patterns by restoring phase dependent modulation of reflexes and reciprocal inhibition, reducing clonus and mediating interlimb coordination. The investigators propose that the SCES will optimize the physiological state of the spinal cord interneuronal circuitry compromised by compensating for loss of supraspinal input for the retraining of these tasks.
Detailed Description
Participants will be screened for eligibility and then participate in pre-training motor, bladder and cardiovascular experiments, followed by 80 sessions of locomotor training. Participants will repeat experiments after the 80 training sessions to quantify that no motor pattern changes are achievable with locomotor training alone and will be evaluated for appropriate candidacy for surgery and epidural stimulation. Participants will be surgically implanted with an epidural stimulator and experiments will be conducted with and without stimulation. Investigators will identify appropriate stimulation parameters for inducing stepping and standing in combination with manual assistance using body weight support on a treadmill and/or overground. Participants will undergo 80-200 training sessions of locomotor training with epidural stimulation. Experiments will be repeated mid and post-training interventions.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Spinal Cord Injury
Keywords
Epidural Stimulation

7. Study Design

Primary Purpose
Basic Science
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
8 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Epidural Stimulator
Arm Type
Experimental
Arm Description
Eligible participants will be implanted with 16-electrode epidural array in the T11-L1 area of the spinal cord
Intervention Type
Device
Intervention Name(s)
Standing and Stepping with spinal cord Epidural Stimulation
Other Intervention Name(s)
Stand-scES, Step-scES, Locomotor Training (LT)
Intervention Description
Standing and Stepping with support from trainers as needed, overground or in a harness with body weight support on a treadmill. Epidural stimulation with specific configurations will be administered to generate standing and stepping.
Primary Outcome Measure Information:
Title
Change From Baseline of Lower Extremity Independence Time During 10 Min Standing Bout After 160 Sessions (1 Year)
Description
We will measure the amount of time individuals are able to stand without manual assistance (independently) throughout a 10 min bout
Time Frame
Baseline, 160 sessions (1 year)
Title
Change From Baseline of Stepping Independence Time During 6 Min Stepping Bout After 160 Sessions (1 Year)
Description
We will measure the number of steps individuals are able to take without manual assistance (independently) throughout a 6 min stepping bout
Time Frame
Baseline, 160 session (1 year)
Secondary Outcome Measure Information:
Title
Change From Baseline of Number of Consecutive Hip Flexion Repetitions Performed Within One Minute After 160 Sessions (1 Year)
Description
We will measure the ability of the individuals to perform consecutive hip flexion repetitions with stimulation during a 1 minute period
Time Frame
Baseline, 160 sessions (1 year)

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: All research participants, irrespective of age or sex, will meet the following criteria: stable medical condition without cardiopulmonary disease or dysautonomia that would contraindicate standing or stepping with BWST; no painful musculoskeletal dysfunction, unhealed fracture, contracture, pressure sore, or urinary tract infection that might interfere with stand or step training; no clinically significant depression or ongoing drug abuse; no current anti-spasticity medication regimen; non-progressive SCI above T10; must not have received botox injections in the prior six months; be unable to stand or step independently; at least one-year post injury; and must be at least 18 years of age. In addition, all subjects must satisfy each of the three conditions of the functional neurophysiological assessment described below. Functional Neurophysiological Assessment (FNPA). We will use FNPA to screen potential research participants based on specific neurophysiological inclusion criteria. Participants must have no volitional control of movement below the level of the lesion, but must retain some brain influence on spinal reflexes. Our target population, which will be identified by FNPA, cannot be identified reliable using traditional assessments: hence individual subjects may be classified widely as Class A, B, or C on the ASIA SCI scale. We will include only subjects who fulfill the following three requirements: There is no descending volitional control of movement below the lesion Segmental reflexes remain functional below the lesion Brain influence on spinal reflexes is retained Exclusion Criteria: Ventilatory dependent painful musculoskeletal function, unhealed fracture, contracture, or pressure sore that might interfere with training; clinically significant depression or ongoing drug abuse; cardiovascular, respiratory, bladder or renal disease unrelated to SCI; severe anemia (Hgb<8 g/dL) or hypovolemia; and HIV or AIDS related illness.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Susan Harkema, PhD
Organizational Affiliation
University of Louisville
Official's Role
Principal Investigator
Facility Information:
Facility Name
University of Louisville
City
Louisville
State/Province
Kentucky
ZIP/Postal Code
40202
Country
United States

12. IPD Sharing Statement

Citations:
PubMed Identifier
29875362
Citation
Herrity AN, Williams CS, Angeli CA, Harkema SJ, Hubscher CH. Lumbosacral spinal cord epidural stimulation improves voiding function after human spinal cord injury. Sci Rep. 2018 Jun 6;8(1):8688. doi: 10.1038/s41598-018-26602-2.
Results Reference
background
PubMed Identifier
29020054
Citation
Mesbah S, Angeli CA, Keynton RS, El-Baz A, Harkema SJ. A novel approach for automatic visualization and activation detection of evoked potentials induced by epidural spinal cord stimulation in individuals with spinal cord injury. PLoS One. 2017 Oct 11;12(10):e0185582. doi: 10.1371/journal.pone.0185582. eCollection 2017.
Results Reference
background
PubMed Identifier
24335213
Citation
Sayenko DG, Angeli C, Harkema SJ, Edgerton VR, Gerasimenko YP. Neuromodulation of evoked muscle potentials induced by epidural spinal-cord stimulation in paralyzed individuals. J Neurophysiol. 2014 Mar;111(5):1088-99. doi: 10.1152/jn.00489.2013. Epub 2013 Dec 11. Erratum In: J Neurophysiol. 2015 Jan 15;113(2):678.
Results Reference
background
PubMed Identifier
24713270
Citation
Angeli CA, Edgerton VR, Gerasimenko YP, Harkema SJ. Altering spinal cord excitability enables voluntary movements after chronic complete paralysis in humans. Brain. 2014 May;137(Pt 5):1394-409. doi: 10.1093/brain/awu038. Epub 2014 Apr 8. Erratum In: Brain. 2015 Feb;138(Pt 2):e330.
Results Reference
result
PubMed Identifier
30247091
Citation
Angeli CA, Boakye M, Morton RA, Vogt J, Benton K, Chen Y, Ferreira CK, Harkema SJ. Recovery of Over-Ground Walking after Chronic Motor Complete Spinal Cord Injury. N Engl J Med. 2018 Sep 27;379(13):1244-1250. doi: 10.1056/NEJMoa1803588. Epub 2018 Sep 24.
Results Reference
result
PubMed Identifier
29074997
Citation
Rejc E, Angeli CA, Atkinson D, Harkema SJ. Motor recovery after activity-based training with spinal cord epidural stimulation in a chronic motor complete paraplegic. Sci Rep. 2017 Oct 26;7(1):13476. doi: 10.1038/s41598-017-14003-w.
Results Reference
result
PubMed Identifier
27566051
Citation
Rejc E, Angeli CA, Bryant N, Harkema SJ. Effects of Stand and Step Training with Epidural Stimulation on Motor Function for Standing in Chronic Complete Paraplegics. J Neurotrauma. 2017 May 1;34(9):1787-1802. doi: 10.1089/neu.2016.4516. Epub 2016 Oct 5.
Results Reference
result
PubMed Identifier
26207623
Citation
Rejc E, Angeli C, Harkema S. Effects of Lumbosacral Spinal Cord Epidural Stimulation for Standing after Chronic Complete Paralysis in Humans. PLoS One. 2015 Jul 24;10(7):e0133998. doi: 10.1371/journal.pone.0133998. eCollection 2015.
Results Reference
result
PubMed Identifier
21601270
Citation
Harkema S, Gerasimenko Y, Hodes J, Burdick J, Angeli C, Chen Y, Ferreira C, Willhite A, Rejc E, Grossman RG, Edgerton VR. Effect of epidural stimulation of the lumbosacral spinal cord on voluntary movement, standing, and assisted stepping after motor complete paraplegia: a case study. Lancet. 2011 Jun 4;377(9781):1938-47. doi: 10.1016/S0140-6736(11)60547-3. Epub 2011 May 19.
Results Reference
result

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Epi Stim to Facilitate Standing and Stepping

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