Healthy
Conditions
Keywords
MRI, fingers compression
Brief summary
The objectives was to obtain MRI images of the index finger of the subjects without loading and with loadings (normal and shear forces from 1 to 4N).
Interventions
OTHERCompression of the fingertip under MRI.
Compression of the fingertip by a static loading on the phalanx distal of the index of the subjects; Then also a shear stress in the transverse direction of the finger. The data provided by the MRI images will be geometric information such as the thickness of the skin and its possible variation as a function of the area of the finger, the total thickness of soft tissues in compression as a function of the variation in l The angle between the axis of the phalanx and the plane of contact; Mechanical type information relating to the displacements and reaction forces, to the internal deformations of the different areas of the finger.
Sponsors
Hospices Civils de Lyon
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* Active voluntary healthy adult aged 18 to 65, affiliated to a social security scheme * Stature between 170 and 179cm * Body mass index (BMI) between 20 and 25 * No previous hand musculoskeletal disorders * Cognitive level compatible with oral communication, adherence to instructions and understanding of gestures * Having signed the consent to participate in the study
Exclusion criteria
* the subject presents a neurological or orthopedic disorder ; * the subject presents a pathology that could disturb the task ; * the subject has an Magnetic Resonance Imaging (MRI) contraindication (wears a pacemaker, insulin pump, prothesis, etc, has claustrophobia, …)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Average fingertip deflection under compression | Day 1 | The different stresses will be: compression of the fingertip by a static loading on the phalanx distal of the index of the subjects; Then also a shear stress in the transverse direction of the finger. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Average fingertip dimensions | Day 1 | In order to develop realistic biomechanical models of the fingers allowing the simulation of the grip, an essential step will be the experimental mechanical characterization of the distal phalanges. |
Countries
France
Outcome results
None listed