Robotic TruST-Postural Intervention for Children With Cerebral Palsy

Inclusion Criteria:

* Age 6-17 years
* Diagnosis of Bilateral CP: diplegia, triplegia, or quadriplegia
* Gross Motor Function Classification Systems-Expanded \& Review (GMFCS) levels III or IV
* Ability to sit 5s with trunk support between mid-ribs and pelvis (SATCo = 3-7)
* Cognitive capacity to follow basic verbal instructions (i.e., "do not put your hands on your lap" or "follow and reach the toy")

Exclusion Criteria:

* Absent head control (SATCo = 1)
* Current medical illness unrelated to CP at the time of the study
* Severe dyskinesia that prevents the child from maintaining sitting and recovering balance during reaching movements
* History of recurrent seizures (daily) or drug-resistance epilepsy
* Severe Spinal Deformities: scoliosis \>40◦ and/or kyphosis \>45◦
* Spinal osteosynthesis or orthopedic surgery of spine, upper or lower extremities in the last 6 months
* Severe spasticity of biceps/triceps in both upper extremities (Modified Ashworth Scale = 4)
* Local chemodenervation therapy in spastic muscles (e.g., botulinum toxin or phenol injections) in upper or lower extremities in the previous 3 months or planned during the study
* Other major surgeries in the previous 6 months (if medically contraindicated)