Psychologically: In the makaberen dream of that (any more topical) prosthesis does not illustrate to themselves own fear of helplessness. One fears to be delivered to some processes on which one has no influence because one is for it 'too motionlessly'. Sometimes also: Accident fear which one does not admit to himself and other, however. Popular: (arab).: defiance of the former need, you will bring it to success. (See also leg)