This invention relates to mobile equipment such as wheelchairs and more particularly to a leg restraint adapted to wheelchairs comprising a structure allowing an upright position. Said restraint comprises a monoblock leg support having locking means specially designed to be easily operated by a handicapped person. Said monoblock support being pivotally fixed at one extremity to allow access to the wheelchair. This restraint is used to hold the legs and more particularly the lower leg knees of a weak or handicapped person in place when in an upright position.