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CompletedNCT03044080Updated Oct 20, 2017

Effects of Botulinum Neurotoxin Type A (BoNT/A) Free of Complexing Proteins in the Spastic Equinovarus Foot

A Phase 4 interventional study of IncobotulinumtoxinA and OnabotulinumtoxinA in Stroke Rehabilitation and Stroke Rehabilitation Spasticity Management, sponsored by Parc de Salut Mar. Completed at 1 site in Spain. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2017-10-20.

Sponsored by Parc de Salut Mar · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 1 month after the study started (first participant enrolled Jan 2015, registered Feb 2017).
Phase
Phase 4
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Clinical randomized clinical trial to assess the effectiveness on walking speed of repeated use of botulinum neurotoxin type A (BoNT/A)in the post-stroke spastic equinovarus foot in three successive infiltrations at 6-month intervals, checking if the sustainability of the effect is greater in incobotulinumtoxin A (Xeomin®) than in onabotulinumtoxinA (Botox®).

Read the detailed description

Spasticity is present in 38% of patients at six months after stroke. Equinovarus foot, with or without claw toes and striatal foot, is especially common. There is a weak to moderate evidence in favor of the use of botulinum neurotoxin type A (BoNT/A) in the equinovarus foot, stiff-knee and in other patterns that may interfere with gait ability. Specifically, BoNT/A increases walking speed in stroke patients with spastic equinovarus foot.

Repeated use of BoNT/A may lead to the appearance of neutralizing antibodies, so its effect may decrease over successive infiltrations. Among the differential characteristics of incobotulinumtoxinA (Xeomin®) there is a reduced inactivated botulinum neurotoxin content and the lack of complexing proteins, which would diminish antigenicity and not suppose a decrease of the effect before successive infiltrations.

The objective of this project is to determine the effect on walking speed of repeated use of BoNT/A in post-stroke spinal equinovarus foot in three consecutive injections at 6-month intervals and to investigate whether the sustainability of the effect is greater in incobotulinumtoxinA (Xeomin®) than in onabotulinumtoxinA (Botox®). All patients will receive 200-300 units of BoNT/A (Xeomin ® or Botox ®) that will be distributed according to the individual clinical pattern of spastic equinovarus foot.

02

Conditions studied

  • Stroke Rehabilitation
  • Stroke Rehabilitation Spasticity Management

Keywords

  • Walking Disorder
  • Stroke
  • Botulinum Toxin
  • Spasticity
03

In context

Muscle Spasticity

704 studies on the registry are indexed under Muscle Spasticity; 149 are open to participants now.

This study's enrollment of 20 is below the median of 36 across 525 interventional studies indexed under Muscle Spasticity.

Browse Muscle Spasticity studies →

Lead sponsor

Parc de Salut Mar is the lead sponsor of 180 studies on the registry; 27 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • First-ever Ischemic or haemorrhagic stroke
  • Time since stroke onset: >6months
  • Hemiparesis with equinovarus foot
  • No previous BoNT/A

Exclusion criteria

Exclusion Criteria:

  • Non-ambulant patients
  • Medical contraindications for BoNT/A use that appear in the product information sheet
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
20 participants (actual)

Study arms

  • Active comparator
    IncobotulinumtoxinA

    Injection of 200-300 units of IncobotulinumtoxinA (Xeomin ®)

    Drug: IncobotulinumtoxinA

  • Active comparator
    OnabotulinumtoxinA

    Injection of 200-300 units of onabotulinumtoxiA (Botox®)

    Drug: OnabotulinumtoxinA

Interventions

  • DrugIncobotulinumtoxinA

    Three consecutive injections of 200-300 units of IncobotulinumtoxinA (Xeomin ®) under ultrasound guidance. The IncobotulinumtoxinA will be distributed according to the individual clinical pattern of spasticity: plantar flexor muscles (triceps sural: gastrocnemius and soleus), tibialis posterior, flexor digitorum longus.

  • DrugOnabotulinumtoxinA

    ree consecutive injections of 200-300 units of OnabotulinumtoxinA (Botox ®) under ultrasound guidance. The BoNT/A will be distributed according to the individual clinical pattern of spasticity: plantar flexor muscles (triceps sural: gastrocnemius and soleus), tibialis posterior, flexor digitorum longus.

06

What researchers measure

Primary outcomes

  1. Change in walking speed

    Walking speed, expressed in m/s, is assessed in a 10-m corridor

    Time frame: Baseline and monthly during 18 months

Secondary outcomes

  1. Change in spasticity assessed with the Modified Ashworth Scale

    Spasticity assessed with the Modified Ashworth Scale (range 0-5)

    Time frame: Baseline and monthly during 18 months

  2. Change in walking disability assessed with the Scandinavian Stroke Scale

    Walking disability is assessed with the Scandinavian Stroke Scale

    Time frame: Baseline and monthly during 18 months

  3. Change in functional ambulation ability assessed with the Modified Walking Categories

    Functional ambulation ability is assessed with the Modified Walking Categories

    Time frame: Baseline and monthly during 18 months

  4. Change in step time

    Step time (Temporal gait parameter) is expressed in seconds and assessed with instrumented gait analysis

    Time frame: Baseline and monthly during 18 months

  5. Change in step length

    Step length (Spatial gait parameter) is expressed in meters and assessed with instrumented gait analysis

    Time frame: Baseline and monthly during 18 months

07

Study locations

1 site
  • Hospital de l'Esperança
    Barcelona, 08024, Spain
08

References and documents

Publications

  • Sommerfeld DK, Eek EU, Svensson AK, Holmqvist LW, von Arbin MH. Spasticity after stroke: its occurrence and association with motor impairments and activity limitations. Stroke. 2004 Jan;35(1):134-9. doi: 10.1161/01.STR.0000105386.05173.5E. Epub 2003 Dec 18. PubMed 14684785 ↗
  • Watkins CL, Leathley MJ, Gregson JM, Moore AP, Smith TL, Sharma AK. Prevalence of spasticity post stroke. Clin Rehabil. 2002 Aug;16(5):515-22. doi: 10.1191/0269215502cr512oa. PubMed 12194622 ↗
  • Foley N, Murie-Fernandez M, Speechley M, Salter K, Sequeira K, Teasell R. Does the treatment of spastic equinovarus deformity following stroke with botulinum toxin increase gait velocity? A systematic review and meta-analysis. Eur J Neurol. 2010 Dec;17(12):1419-27. doi: 10.1111/j.1468-1331.2010.03084.x. PubMed 20491885 ↗
  • Dressler D. Five-year experience with incobotulinumtoxinA (Xeomin((R)) ): the first botulinum toxin drug free of complexing proteins. Eur J Neurol. 2012 Mar;19(3):385-9. doi: 10.1111/j.1468-1331.2011.03559.x. Epub 2011 Oct 28. PubMed 22035051 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 20, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03044080
Lead sponsor
Parc de Salut Mar
Responsible party
Esther Duarte (Rehabilitation Research Group Coordinator, PhD, Parc de Salut Mar) — Principal investigator
First posted
Feb 6, 2017
Start date
Jan 1, 2015
Primary completion
Jun 30, 2017
Completion
Sep 30, 2017
Last update
Oct 20, 2017

Study contacts

Esther Duarte, PhD
principal investigator · Fundació IMIM - Parc de Salut Mar

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2017. You cannot join it, but the record below documents what was studied.

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