A prototype walker was constructed and tested on both able body and spinal cord injury test subjects (Fig. 4). The total walker cost was $1,658, which is equal to or less than the cost of currently available lift walkers. The base frame of the walker is 0.80 m (32 in) wide and 1.0 m (40 in) deep. This foot print easily enables a user to position a standard wheelchair adjacent to the platform (Fig. 4).