Evaluation of the Comfort Increase Provided by an Additional Foam Pad on a Lumbar Belt and Its Biophysical Impact

Back orthosis permits temporary support and stress reduction (in terms of load) of the concerned structures and first of all intervertebral disks. The aim of this study is to evaluate the comfort variation with and without the additional back insert, with the hypothesis that a more comfortable lumbar belt would improve the care observance. This study also aims to verify the relevancy of objective indicators such as pressure measurement and disk hydration for the added benefice of the back insert.

Inclusion criteria

• Healthy volunteer, men or women, aged 18 to 50 years old without lumbar pathology.
• Volunteer beneficiary of a social security scheme.
• Volunteer informed about the study and having co-signed a consent form to participate to the study with the investigator

Exclusion criteria

• Protected persons
• Pregnant or breastfeeding women
• Persons deprived of freedom, hospitalised without consent, hospitalised with other ends then research.
• Adults under legal protection (protection of vulnerable adults) or not able to express consent.
• Persons showing gait difficulties (test on treadmill) or with neurological/joint pathologies promoting falls (Parkinson, hemiplegia, …)
• Patient seen by a doctor for lumbar pain in the 2 months prior to the inclusion.
• Patient suffering from scoliosis
• Refusal of consent
• Contraindication to MRI
• Patient carrying an internal electronic device (pacemaker, neurostimulator, insulin pump…)
• Patient with known allergies to one of the product components (e.g. latex)
• During the first MRI, volunteers showing prior signs of lower back pain or discopathy will be excluded.