A wheelchair sella est cum rotis, ambulatio difficilis vel impossibilis propter morbum, iniuriam, difficultates ad senectutem vel defectum pertinentium.Hae includere possunt iniurias medullae spinalis (paraplegia, hemiplegia, et quadriplegia), paralytica cerebri, laesio cerebri, osteogenesis imperfecta, morbus neuronus motoris, sclerosis multiplex, dystrophy muscularis, spina bifida, etc. manual wheelchair, electrica wheelchair, scalae genus wheelchair.