A therapeutic leg elevation device and an associated treatment method are disclosed. The device includes a first inclined surface for supporting a patients thigh and that tilts the thigh at an angle above horizontal that is also less than an angle that can kink the femoral vein. A second inclined surface supports the patients lower leg and also tilts the lower leg above the horizontal at an angle sufficient to permit gravity to augment blood flow. The first and second surfaces define an angle that positions the knee and lower leg at an angle that relaxes the hamstring and gastrocnemius muscle for comfort and prevents the popliteal vein from being compressed by the tibia. The second inclined surface has a limited length that permits a patients feet to extend over the end of the second surface to prevent pressure on the heel. The device includes an inflatable interior component and a cushion layer covering the inflatable interior component.