System crutches. With platform crutches, the hand retains a grip while the forearm rests on the horizontal platform. System crutches are usually not usually applied, except by those with a weak hand grip as a consequence of problems for example arthritis or cerebral palsy. Cerebral palsy: People with cerebral palsy https://reidsapfm.blogdon.net/the-greatest-guide-to-dog-wellness-drops-50966309