A pilot study of an evaluation of a dynamic foot support for wheelchair users with extensor spasms

ISRCTN ISRCTN74115746
DOI https://doi.org/10.1186/ISRCTN74115746
Secondary identifying numbers WBM470/01/v1
Submission date
25/04/2014
Registration date
29/05/2014
Last edited
06/12/2016
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Nervous System Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
Dystonic cerebral palsy is a condition that can include powerful spasms that cause the whole body to extend and straighten out. The spasms are called 'extensor spasms'. These spasms can result in pain, discomfort and poor posture. Comfort and posture may be able to be improved if the person's seating moves with them during a spasm. It is thought that present dynamic foot supports do not allow sufficient movement, so a new support has been designed. The new support was simulated in use with an adult with extensor spasms by a team of engineers and therapists, just using their hands. The adult reported that his pain was significantly reduced, that he had better head and hand control, and that he could eat and drink more easily. This study will provide the new support to three adults and three children, and evaluate their experiences of using the device for 4 weeks. We will measure how well it works using
questionnaires, interviews and some technology that measures the movements of the foot support. We will compare their experiences of sitting during extensor spasms with and without the new foot support.

Who can participate?
Children aged 5 or older affected by dystonic cerebral palsy can participate in the study.

What does the study involve?
The idea of the foot support is to help manage spasms which can be uncomfortable, painful and disrupt daily routines. The participant will be asked to try out the new foot support for 4 weeks and to help us find out how well it works. They will be asked some questions, we will take some measurements, and fit the foot support to the participant’s wheelchair. If it is satisfactory, we will ask them to use this footrest for 4 weeks. We ask the participant to review the foot support very quickly every day by answering three questions. It is also important they note down any comments or changes in their spasms. If at any time the foot support is uncomfortable or not working for the participant, it can be removed. We will meet up with the participant after 4 weeks to find out what they thought about the footrest, take some final measurements, and to collect any final comments on the foot support.

What are the possible benefits and risks of participating?
The participant’s therapist will select people who they think this new foot support might be beneficial to. It is intended to reduce discomfort and make it easier for people to join in with activities. However, it is not guaranteed that the foot support will help the participant. There is a risk that it could be slightly uncomfortable for a short while, whilst the participant is getting used to the new foot support.

Where is the study run from?
The study involves three visits to the participant at either their home or where they have therapy. We will agree convenient dates and times with the participant. The study is based in the children’s centre at the Royal United Hospital in Bath (UK) and with an Occupational Therapist who works across the whole country.

When is the study starting and how long is it expected to run for?
The study started in March 2014 and is expected to run until December 2017.

Who is funding the study?
Posture and Mobility Group (UK)

Who is the main contact?
Dr Tim Adlam
timadlam@designability.org.uk

Contact information

Dr Tim Adlam
Scientific

Designability - BIME
Block D1 Wolfson Centre
Royal United Hospital
Bath
BA1 3NG
United Kingdom

ORCiD logoORCID ID 0000-0001-7881-4942
Phone +44 (0)1225 824 103
Email timadlam@designability.org.uk

Study information

Study designFeasibility/pilot study; multi-centered
Primary study designInterventional
Secondary study designNon randomised study
Study setting(s)Hospital
Study typeQuality of life
Participant information sheet https://www.dropbox.com/sh/q5k7tp2v2lksayu/Uj6syMX0uH
Scientific titleEvaluation of a foot support for people with extensor spasms (v1)
Study objectivesThis study is a pilot to evaluate the feasibility of a method for evaluating an anatomically hinged dynamic foot support that may increase comfort, and improve the ability of people using the support to carry out every-day activities like communicating, eating, playing and working.
Ethics approval(s)NRES Committee Yorkshire & The Humber - Leeds West, 19/02/2014, ref: 14/YH/0004
Health condition(s) or problem(s) studiedDystonic cerebral palsy
InterventionAll participants will receive a novel dynamic foot support which will be hinged at the knee and ankle allowing significant knee and foot movement, while maintaining alignment of the foot and providing some weight bearing support.

A dynamic foot support has a locking mechanism to replicate a static foot support to allow comparison in the measures taken before the evaluation period and after the evaluation period. Measures will be taken for both the anatomical dynamic foot support and the static foot support.
Intervention typeDevice
Pharmaceutical study type(s)
Phase
Drug / device / biological / vaccine name(s)
Primary outcome measureCPCHILD questionnaire - an outcome measure used to measure the care givers' perspectives on the health status, comfort, well being, and ease of care giving of children with severe developmental disabilities, and a useful measure of health related quality of life of these children. Dr Unni Narayanan (CPCHILD author) said adults with severe disabilities issues are much the same, therefore this measure can be used with them as well. CP CHILD Questionnaire will be completed at the fitting appointment (visit 2: consent, baseline assessment and delivery) at the beginning and at the review appointment at the end of the study 5 weeks later (visit 3: Final Assessment). This standard questionnaire will take approximately 1 hour to complete at each of these visits.
Secondary outcome measuresEach of the following outcome measures will be carried out at the fitting appointment (visit 2) and at the review appointment 5 weeks later (visit 3).
1. Data logging (1 hour) –- each foot support has a built in load cell which measures the force of the spasms and how often the spasms occur. It will send information to a data logger which will produce graphs. This will be measured with the foot support both in the locked static position and unlocked in the dynamic position for 30 minutes each.
2. Pressure mapping (20 minutes) –- a pressure mat will be positioned on the participant’s seat cushion for 20 minutes. For 10 of these minutes the foot support will be locked and static, and for the other 10 minutes the foot support will be dynamic. The pressures will be continuously recorded on software which will identify peak and mean pressures in both these time periods.
3. Therapist interview (1 hour) -– this interview consists of a number of qualitative questions which are open ended to allow the participant to express their experience and use of the foot support with some direction to allow comparison before and after the evaluation period.
Overall study start date01/03/2014
Completion date30/12/2017

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants6
Key inclusion criteria1. Experiences whole body extensor spasms
2. Uses a wheelchair or other specialist seating
3. Is aged 5 years or older
4. Diagnosis of cerebral palsy
Key exclusion criteria1. At risk of harm from the dynamic foot support, to be determined by the patient's own occupational or physiotherapist in consultation with the project team
2. Concurrent medical interventions likely to cause changes in the extensor spasms during the course of the study
3. Other medical conditions that may cause harm or distress to the participant as a result of using the foot support

(The reason for exclusion is so we do not contaminate our results or those of another study with another intervention)
Date of first enrolment01/03/2014
Date of final enrolment30/09/2017

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Royal United Hospital
Bath
BA1 3NG
United Kingdom

Sponsor information

Designability -– Bath Institute of Medical Engineering (UK)
Hospital/treatment centre

c/o Nigel Harris
Wolfson Centre
Royal United Hospital
Bath
BA1 3NG
England
United Kingdom

Phone +44 (0)1225 824 103
Email director@designability.org.uk
Website http://www.designability.org.uk/
ROR logo "ROR" https://ror.org/01datx010

Funders

Funder type

Charity

Posture and Mobility Group (UK) - Small Research Study Funding Scheme

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
HRA research summary 28/06/2023 No No

Editorial Notes

06/12/2016: the overall trial end date was changed from 31/12/2014 to 30/12/2017.