An ankle-foot orthosis (AFO) for hemiplegic patients called the DACS (dorsiflexion assist controlled by spring) AFO was developed. Previous studies have shown the DACS AFO to have the following desirable characteristics: 1) the magnitude of the dorsiflexion assist moment and the initial ankle angle of the AFO can be changed easily, and 2) no plantarflexion assist moment is generated. DACS AFOs were used daily by 5 hemiplegic patients, and their evaluations were favorable. In this paper, the structure and the mechanical characteristics of the DACS AFO and the gait improvement of hemiplegic patients with the DACS AFO are shown.
At the time this paper was submitted, SUMIKO YAMAMOTO, PhD, was a senior researcher, Tokyo Metropolitan Prosthetic and Orthotic Research Institute.
MASAHIKO EBINA, CPO, SHIGERU KUBO, Eng., and TAKEO HAYASHI were researchers, Tokyo Metropolitan Prosthetic and Orthotic Research Institute. The institute has since closed.
Currently, SUMIKO YAMAMOTO, PhD is Assistant Professor, Tohoku University Graduate School of Medicine, Department of Restorative Neuromuscular Surgery and Rehabilitation.
MASAHIKO EBINA, CPO, SHIGERU KUBO, Eng., and TAKEO HAYASHI are senior technicians, Tokyo Metropolitan Technical Aid Center.
YOSHIYUKI AKITA, CPO, is an orthotist, Ohmiya Prosthetic and Orthotic Laboratory. YASUYUKI HAYAKAWA, CPO, is teaching manager, Waseda College of Medical Arts and Sciences.
© 1999 American Academy of Orthotists & Prosthetists