NCT03333434

Brief Summary

Ankle foot orthoses (AFO) are frequently used to improve locomotor skills of cerebral palsied children (CP) although the level of scientific evidence to support their use is still moderate. Carbon Ankle Seven spring (A7 - Otto Bock, Germany) is specifically designed to store energy when loaded and release it at toe-off in order to improve gait performance with respect to non-energy-storing AFOs. The aim of this work is to verify the superiority of the ankle-7 orthosis compared to the more widespread AFO, to improve the functionality and walking function of children with spastic diplegia and PCI.

Trial Health

55
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
10

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Nov 2012

Longer than P75 for not_applicable

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 30, 2012

Completed
4.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 15, 2017

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

August 15, 2017

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

October 2, 2017

Completed
1 month until next milestone

First Posted

Study publicly available on registry

November 7, 2017

Completed
Last Updated

June 12, 2025

Status Verified

November 1, 2017

Enrollment Period

4.5 years

First QC Date

October 2, 2017

Last Update Submit

June 9, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change from right and left ankle joints power generation in stance phase after the use of first orthosis to right and left ankle joints power generation in stance phase after the use of second orthosis

    Measured by instrumental gait analysis (ratio of watt to kilogram)

    After a 4-6 week period of use of first orthosis and after a 4-6 week period of use of second orthosis

Secondary Outcomes (5)

  • knee joint kinematics

    After a 4-6 week period of use of first orthosis and after a 4-6 week period of use of second orthosis

  • stride length

    After a 4-6 week period of use of first orthosis and after a 4-6 week period of use of second orthosis

  • walking speed

    After a 4-6 week period of use of first orthosis and after a 4-6 week period of use of second orthosis

  • preference of use of AFO or Ankle_7

    After a 4-6 week period of use of first orthosis, after a 4-6 week period of use of second orthosis and after 3 months after three months when the child could freely use both orthoses

  • clinical evaluation of the walking function

    After a 4-6 week period of use of first orthosis and after a 4-6 week period of use of second orthosis

Study Arms (2)

AFO - Ankle_7 group

OTHER

AFO is active comparator, ANKLE7 is the experimental treatment

Device: Carbon Ankle Seven spring (A7 - Otto Bock, Germany)Device: Hinged AFO

Ankle-7 - AFO group

OTHER

AFO is active comparator, ANKLE7 is the experimental treatment

Device: Carbon Ankle Seven spring (A7 - Otto Bock, Germany)Device: Hinged AFO

Interventions

AFO - Ankle_7 groupAnkle-7 - AFO group
AFO - Ankle_7 groupAnkle-7 - AFO group

Eligibility Criteria

Age6 Years - 18 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • \- Clinical indication to the use of orthoses to improve the walking function confirmed by instrumental parameters obtained from analysis of the path (dynamic electromyography, optoelectronic stereophotogrammetry analysis);
  • Patients who already have AFO orthoses (or ankle-7) that need to be renewed;
  • Patients with new clinical indication to the use of orthoses but not yet in possession of the same;
  • Informed consent from parents / guardians of the child

You may not qualify if:

  • Cognitive disabilities that may affect the child's participation in the activities related to this study, in the opinion of the investigators;
  • Lower limbs sensory disability that may affect any beneficial effects of the use of the orthoses, in the opinion of the investigators;
  • Other diseases associated or not associated with PCI that, according to investigators, could affect the child's participation in the activities related to this study (eg: drug-resistant epilepsy);
  • Administration of antispasmodic drugs in the last 6 months;
  • Functional surgery of the lower limbs in the last 6 months;

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Cerebral Palsy

Condition Hierarchy (Ancestors)

Brain Damage, ChronicBrain DiseasesCentral Nervous System DiseasesNervous System Diseases

Study Officials

  • Adriano Ferrari

    University of Modena and Reggio Emilia

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
CROSSOVER
Sponsor Type
OTHER GOV
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 2, 2017

First Posted

November 7, 2017

Study Start

November 30, 2012

Primary Completion

May 15, 2017

Study Completion

August 15, 2017

Last Updated

June 12, 2025

Record last verified: 2017-11