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CompletedNCT01499862Updated Aug 2, 2013Results posted

Mobility Training Using a Bionic Knee Orthosis in Patients Chronic Post-Stroke: A Case Series

A Phase 4 interventional study of Tibion Bionic Leg in Stroke, sponsored by Tibion Bionics, Inc.. Completed at 1 site in United States. Open to participants aged 40 Years to 60 Years. Per ClinicalTrials.gov, last updated 2013-08-02.

Sponsored by Tibion Bionics, Inc. · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
3
Allocation
Not applicable
Ages
40 Years to 60 Years
Sex
All
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Study summary

This pilot study examined the effect of task-oriented mobility training in three persons chronic post-stroke using a novel, wearable, mobile intention-based robotic orthosis (Tibion Bionic Leg).

02

Conditions studied

  • Stroke

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Keywords

  • Stroke
  • Tibion
  • Bionics
  • Rehab
  • Therapy
  • Robotics
  • Intention
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In context

Stroke

7,286 studies on the registry are indexed under Stroke; 2,007 are open to participants now.

This study's enrollment of 3 is below the median of 50 across 5,369 interventional studies indexed under Stroke.

Browse Stroke studies →

Lead sponsor

Tibion Bionics, Inc. is the lead sponsor of 3 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Male or female
  • Aged 40 to 60 years
  • One year status post-stroke
  • Able to walk at least 10 meters
  • Independence in self-care

Exclusion criteria

Exclusion Criteria:

  • Medically unstable
  • Major cardiopulmonary deficiency
  • Major depression
  • Significant cognitive deficit
  • Currently receiving gait training
  • Younger than 40 years of age
  • Older than 60 years of age
  • Unable to walk at least 10 meters
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
3 participants (actual)

Study arms

  • Experimental
    Tibion Arm

    Arm of the study in which enrolled post-stroke subjects undergo rehabilitative therapy with the Tibion Bionic Leg.

    Device: Tibion Bionic Leg

Interventions

  • DeviceTibion Bionic Leg

    A programmable, carbon-fiber robotic leg orthosis (Tibion Bionic Leg, Tibion Corporation, Sunnyvale, CA) was used during therapy to actively supplement concentric and eccentric quadriceps function on the participant's impaired side. The device uses internal sensors at the foot and knee joint to detect intention of movement and, once a variable force threshold is passed, the devices provides appropriate assistive and resistive adjustments.

06

What researchers measure

Primary outcomes

  1. Ambulation Speed

    Ambulation speed, in meters per second, as obtained by the Ten (10) Meter Walk Test (10 MWT). The 10 MWT measures the time required to walk 10 meters at the subject's comfortable walking pace.

    Time frame: Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.

Secondary outcomes

  1. 6 Minute Walk Test (6 MWT)

    The total distance walked by the patient, in meters, as obtained by the Six (6) Minute Walk Test (6 MWT). The 6 MWT is performed over level ground, using any walking aids (canes, walkers, etc.) the patient requires for comfortable walking.

    Time frame: Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.

  2. Timed Up and Go (TUG) Test

    The time, in seconds, for the patient to rise from sitting in a standard arm chair, walk 3 meters, turn around, walk back to the chair, and sit down. This evaluation is called the Timed Up and Go test (TUG). The patient may wear their usual footwear and use any aids (canes, walkers, etc.) they typically employ for comfortable walking.

    Time frame: Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.

  3. Five Times Sit to Stand Test (5 x STS)

    The time, in seconds, for the patient to rise from a seated to full standing position and return to sitting five times in rapid succession. This evaluation is called the Five Times Sit to Stand Test (5 x STS)

    Time frame: Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.

  4. Step Length

    The length of the patient's average step, in meters, as measured during comfortable walking.

    Time frame: Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.

07

Results

Posted Aug 2, 2013
Limitations and caveats
These results are from a small group (n of 3) of patients and should not be assumed to be consistent across all populations. Furthermore, the inherent subjective variability of patient response in physical therapy interventions should be considered.

Participant flow

Patients were part of the hospitals patient population.

Participant flow — Overall Study
MilestoneTibion Arm Baseline Assessments
Started3
Completed3
Not completed0

Outcome measures

Secondary6 Minute Walk Test (6 MWT)

The total distance walked by the patient, in meters, as obtained by the Six (6) Minute Walk Test (6 MWT). The 6 MWT is performed over level ground, using any walking aids (canes, walkers, etc.) the patient requires for comfortable walking.

Time frame:
Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.
Reported as:
Number · Meters
6 Minute Walk Test (6 MWT)
MetersPatient 1Patient 2Patient 3
Baseline17093271
End of Training207140300
1 Month Post-Training250123285
SecondaryTimed Up and Go (TUG) Test

The time, in seconds, for the patient to rise from sitting in a standard arm chair, walk 3 meters, turn around, walk back to the chair, and sit down. This evaluation is called the Timed Up and Go test (TUG). The patient may wear their usual footwear and use any aids (canes, walkers, etc.) they typically employ for comfortable walking.

Time frame:
Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.
Reported as:
Number · Seconds
Timed Up and Go (TUG) Test
SecondsPatient 1Patient 2Patient 3
Baseline21.421.49.14
End of Training14.523.38.94
1 Month Post-Training12.424.010.1
SecondaryFive Times Sit to Stand Test (5 x STS)

The time, in seconds, for the patient to rise from a seated to full standing position and return to sitting five times in rapid succession. This evaluation is called the Five Times Sit to Stand Test (5 x STS)

Time frame:
Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.
Reported as:
Number · Seconds
Five Times Sit to Stand Test (5 x STS)
SecondsPatient 1Patient 2Patient 3
Baseline12.112.411.4
End of Training10.513.012.2
1 Month Post-Training11.113.210.1
SecondaryStep Length

The length of the patient's average step, in meters, as measured during comfortable walking.

Time frame:
Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.
Reported as:
Number · Meters
Step Length
MetersPatient 1Patient 2Patient 3
Baseline0.490.290.54
End of Training0.560.400.59
1 Month Post-Training0.590.390.60
PrimaryAmbulation Speed

Ambulation speed, in meters per second, as obtained by the Ten (10) Meter Walk Test (10 MWT). The 10 MWT measures the time required to walk 10 meters at the subject's comfortable walking pace.

Time frame:
Baseline (prior to training); at conclusion of 4 week training regimen (1.5 hours/session with 2 to 4 sessions per week); and 1 Month post-training regimen.
Reported as:
Number · meters per second (m/s)
Ambulation Speed
meters per second (m/s)Patient 1Patient 2Patient 3
Baseline0.600.290.83
End of Training0.810.431.03
1 Month Post-Training0.950.451.14

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Tibion Arm Baseline Assessments—0/3 (0%)0/3 (0%)

Baseline characteristics

Age Continuous
Age Continuous(Years)All Participants
Median50 (40 to 60)
Sex: Female, Male
Sex: Female, Male(Participants)All Participants
Female2
Male1
Lower Left Extremity Strength
Lower Left Extremity Strength(Pounds-Force)All Participants
Median105 (90 to 169)
Right Lower Extremity Strength
Right Lower Extremity Strength(Pounds-Force)All Participants
Median105 (97 to 138)
Resting Extensor Tone (Modified Ashworth Scale)
Resting Extensor Tone (Modified Ashworth Scale)(Units on a Scale)All Participants
Mean Ankle Score2 (1 to 4)
Mean Knee Score3 (1 to 4)
08

Study locations

1 site
  • Bakar Community Center at the University of California San Francisco
    San Francisco, California 94158-2332, United States
09

References and documents

Publications

  • Wong CK, Bishop L, Stein J. A wearable robotic knee orthosis for gait training: a case-series of hemiparetic stroke survivors. Prosthet Orthot Int. 2012 Mar;36(1):113-20. doi: 10.1177/0309364611428235. Epub 2011 Nov 14. PubMed 22082495 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 2, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01499862
Lead sponsor
Tibion Bionics, Inc.
Collaborators
University of California, San Francisco
Responsible party
Sponsor
First posted
Dec 26, 2011
Start date
Jun 2009
Primary completion
Dec 2011
Completion
Dec 2011
Results posted
Aug 2, 2013
Last update
Aug 2, 2013

Study contacts

Nancy N Byl, PhD, PT
principal investigator · University of California, San Francisco

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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