Virtual Reality Applied to the Evaluation and Rehabilitation of Locomotion - Study of Tolerance in the Lower Limb Amputee

The adaptability of the locomotor activity allows to face all the modifications of the immediate environment met in the daily activities. These situations become complex to apprehend for a person with a locomotor disability such as patients fitted with a lower limb amputation device. Thus, these adaptation capacities are essential to take into account in the rehabilitation process to maximize autonomy and reduce the risk of falls. For this purpose, the Quantitative Gait Analysis (QGA) allows to measure the impact of these constraining situations on the organization of gait patterns. However, this evaluation could be considerably optimized in current practice with the contribution of Virtual Reality (VR), by its immersive power which brings it closer to real life conditions (walking in a straight line, going up/down steps, taking into account visual and sound constraints, etc.). Eventually, this immersive approach by various VR environments could allow to improve the rehabilitation protocols in a personalized and secure way.In this context, this project proposes to measure the tolerance of volunteers in a specific virtual environment and to quantify the modifications induced by this immersive environment, during a simple locomotor act (walking on flat ground) and complex (walking on a slope) in healthy volunteers, in order to evaluate the impact of VR on locomotion in a healthy population, and then in a second time in lower limb amputee patientsThis monocentric study will take place on the Technological Investigation Platform of the Dijon Bourgogne University Hospital.25 healthy volunteers and 25 lower limb amputees (transtibial or transfemoral) will be included in this study.The participants will make 3 visits:Visit 1 (inclusion visit and analysis of walking on flat ground)visit 2 (analysis of walking on slopes): between 15 days and 1 month after visit 1visit 3 (group interview with a sociologist): only for patients within 45 days after visit 2

Inclusion Criteria:Healthy volunteers:Person who has given oral consentMale or female over the age of majority, < 80 yearsPerson able to understand simple commands, conditioning instructionsAmputee patients:Person who has given oral consentMale or female over the age of majority, < 80 yearsPatients with unilateral transfemoral or transtibial amputation of the lower limb of any origin (traumatic, vascular, congenital or neoplastic) with a definitive device.Patients with stable locomotion with aids, without technical aidsPerson able to understand simple orders, conditioning instructionsExclusion Criteria:Healthy Volunteers:Person who is not affiliated or not a beneficiary of a social security systemPerson subject to a legal protection measure (curatorship, guardianship)Person subject to a legal protection measurePregnant, parturient or breastfeeding womanMajor incapable or unable to express his consentMinorPerson with locomotor disorders (orthopedic, neurological, vascular, cardiac...) and/or balance disorders that may significantly alter walkingPerson with a contraindication to wearing a virtual reality helmet (uncontrolled epilepsy, wound of an area that the helmet would cover, severe ophthalmological disorders etc.)Amputee patients:Person who is not affiliated or not a beneficiary of a social security planPerson under legal protection (guardianship, trusteeship)Person subject to a legal protection measurePregnant, parturient or breastfeeding womanMajor incapable or unable to express his consentMinorPerson with locomotor disorders (orthopedic, neurological, vascular, cardiac...) other than amputation that may significantly alter walkingPersons with contraindications to wearing a virtual reality helmet (uncontrolled epilepsy, wounds in an area that the helmet would cover, severe ophthalmological disorders, etc.)Patients unable to participate in a group interview (qualitative study only)