Knee Neuromuscular Assessment in Children With Cerebral Palsy

December 19, 2025 updated by: George Paras, University of Thessaly

Reliability and Feasibility of Knee Traction Dynamometry and Electromyography Assessment in Children With Cerebral Palsy

The purpose of this study is to evaluate the reliability (intra-rater and inter-rater) of the K-Pull dynamometer and the K-Myo non-invasive electromyography sensor (assessing neuromuscular activity) in the evaluation of the lower limbs in children with cerebral palsy.

Specific objectives include:

  • Examining differences in neuromuscular activity among children with CP classified at functional levels I to III on the GMFCS scale.
  • Deriving conclusions from the correlation between electromyographic activity, muscle tone, and generated muscle strength.
  • Assessing the applicability of neuromuscular activity assessment devices in clinical settings.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

20

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Greece
    • Phthiotis
      • Lamia, Phthiotis, Greece, 35132
        • Department of Physiotherapy - University of Thessaly

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Children with cerebral palsy, aged 5 to 16 years, classified at GMFCS levels I to III based on specific inclusion and exclusion criteria to ensure the reliability and feasibility of traction dynamometry and surface electromyography assessment.

Description

Inclusion Criteria:

  • children with spastic type cerebral palsy (CP),
  • aged between 5 and 16 years,
  • classified at GMFCS levels I to III,
  • voluntary motor control,
  • ambulatory, with or without the use of mobility aids,
  • can understand and execute verbal commands.

Exclusion Criteria:

  • have previously undergone interventions that affect neuromuscular performance (such as surgery or botulinum toxin injections)
  • have sustained an injury,
  • demonstrate a low level of compliance.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Children with Cerebral Palsy
Children with cerebral palsy, aged 5 to 16 years, classified at GMFCS levels I to III.
Device: Neuromuscular Activity Assessment

K-Pull dynamometer is an assessment tool used to quantify muscle strength. It uses traction through a non-elastic strap to facilitate isometric contractions.

K-Myo (non-invasive EMG sensor) is an assessment tool used to detect muscle activation and tracking patient's improvement.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Muscle Strength
Time Frame: Through study completion, an average of 5 months
Average Peak Force refers to the average highest force output recorded during isometric contractions and represents the maximal strength generated by the muscle group being assessed (e.g., hip or knee flexors and extensors). Unit of Measure: Newton (N)
Through study completion, an average of 5 months
Average Muscle Activation
Time Frame: Through study completion, an average of 5 months
Average activation in the context of surface electromyography refers to the mean level of electrical activity detected from muscle fibers over a specific period. Unit of Measure: millivolt (mV)
Through study completion, an average of 5 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Muscle Tone
Time Frame: Through study completion, an average of 5 months
Evaluated using the Modified Ashworth Scale. Unit of Measure: Scoring Options (0-4) // (higher scores - worse outcome)
Through study completion, an average of 5 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Thessaly

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 20, 2024

Primary Completion (Actual)

January 1, 2025

Study Completion (Actual)

March 1, 2025

Study Registration Dates

First Submitted

October 27, 2024

First Submitted That Met QC Criteria

October 29, 2024

First Posted (Actual)

October 31, 2024

Study Record Updates

Last Update Posted (Actual)

December 29, 2025

Last Update Submitted That Met QC Criteria

December 19, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • neuromusc_knee_cp_child

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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