Efficacy and Usability of the EXPLORER Exoskeleton in Children With Neurodevelopmental Disorders in Natural Environments

Inclusion Criteria: * Diagnosis of any pathology or condition causing neurodevelopmental disorders. * Ability to continuously use the device for two weeks, at least 3 times per week, without causing excessive fatigue that would prevent the participant from carrying out their usual activities. * Availability and commitment from the family to use the device at least 3 times per week during the planned period, in different environments and with various objectives. * Medical authorization for standing, gait training and weight bearing. * Informed consent signed by legal guardians. * Maximum user weight of 60 kg. * Hip width (between greater trochanters) ≤37 cm. * Length of the thigh (distance from the greater trochanter to the lateral condyle of the tibia) from 21cm to 36cm. * Tibia leg length (distance from the lateral condyle of the tibia to the lateral malleolus) from 20cm to 35cm. * Shoe size ≤40 (EU) Exclusion Criteria: * Medical contraindications for standing or walking. * Non-reducible contractures or heterotropic ossifications above the degrees allowed by the device or out of the trajectory imposed by the device * Spasticity equal to 4 on the Modified Ashworth Scale at the time of use of the device. * More than 20º of hip and/or knee non-reducible contractures at the time of using the exoskeleton. * Necessity to walk with more than 5º of hip abduction. * Impossibility to reach 5º of ankle dorsiflexion with ir without orthoses. * Lower length dysmetria that cannot be mitigated with a wedge under the foot. * Skin lesion on parts of the lower extremities that are in contact with the device. * History of fracture without trauma. * Presence of other conditions causing exercise intolerance (such as uncontrolled hypertension, coronary artery disease, arrhythmia, congestive heart failure, severe pulmonary disease). * Conductual disorders that may interfere with the use of the device or their participation in the study, like impulsiveness. * Allergy to any of the EXPLORER materials: cotton, nylon, polyester, PPS, PEEK or ABS.