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Phase 4 Completed N=17 Single-blind Treatment

Imaging of 3D Innervation Zone Distribution in Spastic Muscles From High-density Surface EMG Recordings

Source: ClinicalTrials.gov NCT03302741 ↗
Enrolled (actual)
17
Serious AEs
0.0%
Results posted
Nov 2020
Primary outcomePrimary: Spasticity as Assessed by Reflex Torque of Elbow Flexors — 2.32; 2.04; 2.41; 3.11 Newton meter (n-m)
◆ Published Evidence
No publication linked

No peer-reviewed publication reporting this trial's results has been linked yet. This can indicate results are unpublished — a known publication-bias signal. We re-check periodically.

Summary

The purpose of this study is to evaluate if it is possible to use a new 3D imaging method to guide Botulinum neurotoxin (BTX) injection for muscle spasticity management after stroke. This imaging method is called three dimensional innervation zone imaging, or 3DIZI.

Outcome Measures

OutcomeResultp-value
PRIMARY
Spasticity as Assessed by Reflex Torque of Elbow Flexors
2.71; 1.89; 3.29; 2.85
PRIMARY
Spasticity as Assessed by Reflex Torque of Elbow Flexors
2.71; 1.89; 3.29; 2.85
PRIMARY
Spasticity as Assessed by Reflex Torque of Elbow Flexors
2.71; 1.89; 3.29; 2.85
SECONDARY
Spasticity as Assessed by the Modified Ashworth Scale (MAS)
0; 0; 0; 0; 2; 2
SECONDARY
Spasticity as Assessed by the Modified Ashworth Scale (MAS)
0; 0; 0; 0; 2; 2
SECONDARY
Spasticity as Assessed by the Modified Ashworth Scale (MAS)
0; 0; 0; 0; 2; 2

Eligibility Criteria

Inclusion Criteria

  • a history of not more than one stroke which occurred at least 6 months prior to study enrollment;
  • elbow flexor spasticity rated at 2 or 3 on Modified Ashworth scale (MAS);
  • receiving repeated botulinum toxin injection every 3-4 months;
  • absence of excessive pain in the paretic upper limb;
  • capacity to provide informed consent, with Mini-Mental State Examination (MMSE) must be 25 or higher;

The following modified Ashworth scale (MAS) will be used for spasticity assessment:

0 -No increase in muscle tone; 1 -Slight increase in muscle tone, manifested by a catch and release or by minimal resistance at the end of the range of motion when the affected part(s) is moved in flexion or extension; 1+ -Slight increase in muscle tone, manifested by a catch, followed by minimal resistance throughout the remainder (less than half) of the ROM; 2 -More marked increase in muscle tone through most of the ROM, but affected part(s) easily moved; 3 -Considerable increase in muscle tone, passive movement difficult; 4 -Affected part(s) rigid in flexion or extension.

Exclusion Criteria

  • recent botulinum toxin injection < 4 months;
  • recent changes in antispastic medications <3 weeks (i.e., the antispastic medication regime is not stable;
  • Changes in antispastic medications (such as baclofen, tizanidine, dantrolene etc) during the followup research visits. (NOTE: it is clinically rare for patients who receive repeated injections to change their antispastic medications);
  • history of spinal cord injury or traumatic brain damage;
  • history of serious medical illness such as cardiovascular or pulmonary complications;
  • any condition that, in the judgment of a physician, would prevent the person from participating.
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT03302741). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.

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