Abstract: A therapeutic exercise apparatus for providing ambulation and mobility physical therapy includes a flat platform and two parallel handrails with ladder steps arranged on the platform at the place where the patient would place their feet, so that the gait of the patient is controlled and increased movement of the patient's feet is required in order to permit the patient to traverse the length of the platform. A balance beam extending along the length of the platform can be placed on the platform in lieu of the ladder steps. The steps are removably attached to the platform by means of dowel pins fitting in corresponding holes bored in the surface of the platform.