Abstract: An orthopedic cast walker boot, that includes a tubular enclosure formed of a semi-flexible material having a first section member for covering the rear of the calf, ankle, heel, and sole of the foot; and a second section member for interfitting with the first section member; the second section member having an upper section for covering the shin area of the leg, and a lower section for covering the top area of the foot. The upper and lower sections being integrally connected by a pliable and flexible intermediate connecting section having multiple joints. Velcro fastening straps are provided for fastening and enclosing the first and second section members to form the tubular enclosure about the leg, the ankle, and the foot of the wearer; and traction treads means are adhesively attached to the bottom surface of the first section member.