Efficacy of a Rehabilitation Program With the Pediatric Exoskeleton ATLAS 2030 in Pediatric Patients With Cerebral Palsy

Inclusion Criteria: * Medical authorization for standing, gait training and weight bearing. * Informed consent signed by legal guardians. * Confirmed diagnosis of cerebral palsy GMFCS levels III or IV. * Proper family acceptance and commitment level. * Receiving a minimum of 2 hours of therapy/activities promoting physical activity. * Maximum user weight of 35 kg. * Hip width (between greater trochanteres) less than or equal to 35 cm. * Length of the thigh (distance from the greater trochanter to the lateral condyle of the tibia) from 24cm to 33cm. * Tibia leg length (distance from the lateral condyle of the tibia to the lateral malleolus) from 23cm to 32cm. * Shoe size 27-33 (EU) Exclusion Criteria: * More than 8 sessions of robotic therapy during a month in the previous year to the beginning of the study. * Intensive rehabilitation during the study. * Imposibility of the family to fulfill treatment calendar. * 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 flessum at the time of using the exoskeleton. * Necessity to walk with 10º of hip abduction. * Necessity to walk with more than 9º of ankle dorsiflexion or plantar flexion or impossibility to use an orthosis to reach 90º in the ankle joint. * Severe skin lesion on parts of the lower extremities that are in contact with the device. * Scheduled surgery (rachis, limbs) for the duration of the study or surgery performed (rachis, extremities) in the last 6 months. * History of fracture without trauma. History of bone fracture traumatic in lower extremities or pelvic girdle in the last 3 months. * Severe rigid orthopedic deformities of the spine and/or lower limbs. * Cognitive or conductual disorders that may lead to a lack of adherence to the attachment to the device. * Conditions that provoke exercise intolerance. * Conductual disorders that may interfere with the use of the device or their participation in the study, like impulsiveness or the inability to understand simple comands. * Allergy to any of the ATLAS materials: cotton, nylon, polyester, polyamide, polyethylene or propylene.