My three year old has low core tone due to a midbrain injury at birth. He has mild/moderate dyskinetic CP.
When he sits, he is often quite kyphotic. He does numerous exercises to strengthen his core muscles and can now sit straight volitionally, but not for long. He tucks his tailbone and it is hard for him to sit and stand (assisted) with a neutral pelvis, but not due to tight musculature. We work on this daily...
I am worried about disc degeneration over time, which is common in those with CP.
Would you suggest an external trunk support or lumbar "corset" in the short term, to protect and train his spine until he is mature enough to understand the critical importance of stacksitting and correct posture?