The Convertible Stair-Ramp Curb (CSRC) combines the benefits of the RSR, all while enabling patients who cannot yet climb a slope to access the DST. Includes all benefits of the RSR. Improves floor-to-ramp transition of patients. Presents a practice curb. Enable patients having difficulties handling slopes, to practice on the DST without walking on a slope surface. The DST comes with a standard slope of 60 cm. (23.6 inch) long and of 12 degrees of incline. The CSRC, in raised position extends flat walking distance by 60%. The CSRC can be purchased separately and assembled to the DST by the customer.