the chair 39 s parts to facilitate seating and unseating of the patient as well as storage and transportation of the chair in a motor vehicle the thigh support 4 commonly known medically as 34 abductors 34 or 34 abduction 34 and the means by which it is adjustably secured to the seat of the chair are shown in fig5 a and 5b thigh support 4 has a generally v shaped pad member and a half cylinder shaped member 9 secured to the v shaped pad member at its apex thigh support 4 is held in place by a u shaped rod 6 which is coupled at one of its ends to cylindrical member 9 the primary purpose of thigh support 4 is to maintain a desired separation between the thighs of a seated patient and to prevent the patient from slouching since this desired separation varies from patient to patient the angular orientation of the two sides of the v shaped thigh support 4 are adjustable via right and left linkage arms 60 the right and left linkage arms 60 each are respectively secured at one of their ends to the right and left side of the v shaped support 4 the other end of the right and left linkage arms 60 are rotatably secured to slip coupler 10 which slides along the horizontal portion of the bent support rod 6 by sliding the coupler 10 forward or backward along the support rod 6 the ends of the pad 4 will contract or expand the desired angular orientation is maintained by tightening set screws not shown mounted in the coupler 10 shown in fig5 b is the assembly which permits adjustment of the position and orientation of thigh support 4 this assembly also permits.