Measurement of the Strength of the Posterior Tibial Muscle by Hand-held Dynamometer

Study Overview
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Brief Summary
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Adult flat foot valgus is a degenerative pathology that causes damage to the ligaments of the hindfoot as well as dysfunction of the tendon of the posterior tibial muscle. Currently, there is a lack of a tool allowing a standardized, reliable, reproducible and validated measurement of the strength of the tendon of the posterior tibial muscle in consultation of foot surgery. The hand-held dynamometer could be that tool. The study would consist in measuring the strength of the tendon of the posterior tibial muscle in healthy subjects with a hand-held dynamometer (MicroFET2) by two examiners and compared to isometric reference measurements (CON-TREX CMV Multi-Joint) to validate the reliability of the measurement and its reproducibility.

Official Title
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Validation of the Measurement of the Strength of the Posterior Tibial Muscle by Hand-held Dynamometer Against a Reference Isokinetic Dynamometer

Conditions
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Valgus Foot Deformity

Intervention / Treatment
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* Diagnostic Test: Posterior tibial tendon strength mesure


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients from physical medicine and rehabilitation department hospitalized for pathologies other than neurological or osteo-articular pathologies affecting the lower limbs, Having no neurological or osteo-articular pathology affecting the lower limbs f one year, No history of surgery on the rear foot and ankle, Written informed consent from person, Socially insured patient person, Person willing to comply with all study procedures and study duration. Exclusion Criteria: Neurological or osteo-articular pathologies affecting the lower limbs, Known pathologies of the tendon of the posterior tibialis muscle, Deformations of the foot (flat foot, hollow foot), History of hindfoot or ankle surgery, Pregnant or breastfeeding woman, Inability to receive information, consent and participate in the whole study, Person under judicial protection or deprived of liberty, Person participating in another clinical trial, No social insurance cover, No written consent.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Single group<br>measuring the strength of the tendon of the posterior tibial muscle in healthy subjects with a hand-held dynamometer by two examiners and with an isometric dynamometer | Diagnostic Test: Posterior tibial tendon strength mesure<br>* Posterior tibial tendon strength is assessed with a hand-held dynamometer by two independent observer and with an isometric dynamometer by one observer.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intra-class correlation coefficient of the inversion force (or supination measured in Newton) of the foot between the measurement made with the hand dynamometer and the measurement made with the isokinetic dynamometer (gold standard). | Validity of the measurement of the tendon strength of the posterior tibial muscle with a hand-held dynamometer (MicroFET2) compared to the gold standard (CON-TREX CMV Multi-Joint) in subjects. | on the day of first evaluation (at day 1) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intra-class correlation coefficient of the inversion force of the foot between two measurements made by the same observer with the hand dynamometer (intra-observer reproducibility). | the inversion force (or supination measured in Newton). The two measurements will be performed during two consultations one day apart. | on the day of first evaluation (At day 1) and on the day of second evaluation (at day 2) | 
| Intra-class correlation coefficient of the inversion force of the foot between measurements made by two different observers with the hand dynamometer (intra-observer reproducibility). | the inversion force (or supination measured in Newton) | on the day of first evaluation (At day 1) and on the day of second evaluation (at day 2) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Posterior tibial, hand-held dynamometer, isokinetics, isokinetics, measurement validation