T-FLEX: Variable Stiffness Ankle-Foot Orthosis for Gait Assistance
The development and a preliminary evaluation of a new active ankle-foot orthosis for gait assistance called T-FLEX are presented in this paper. The purpose of this device is to support patients with locomotion disabilities during rehabilitation treatment of the ankle joint. This device is based on bio-inspired actuation, in which the stiffness can be adjusted according to a gait phase detection, thereby reproducing the behavior of antagonistic muscles. A preliminary trial with a healthy subject (kinematic analysis) reveals an increase in the range of motion in ankle kinematics, which is desirable for ankle rehabilitation and assistance.
- 1.Benjamin, E.J., Blaha, M.J., Chiuve, S.E., Cushman, M., Das, S.R., Deo, R., et al.: Heart disease and stroke statistics-2017 update: a report from the american heart association. Circulation 135, e146–e603 (2017)Google Scholar
- 2.Chirveches-Calvache, M.A.: Pontificia Universidad Javeriana, Estimación de la carga de enfermedad cerebrovascular en Colombia para el ańo 2014 (2016)Google Scholar
- 3.Perry, J., Burnfield, J.M., Cabico, L.M.: Gait Analysis: Normal and Pathological Function. SLACK, Thorofare (2010)Google Scholar
- 4.Wu, K.K.: Foot Orthoses: Principles and Clinical Applications. Williams & Wilkins, Baltimore (1990)Google Scholar
- 5.Yamamoto, S., Ebina, M., Iwasaki, M., Kubo, S., Kawai, H., Hayashi, T.: Comparative study of mechanical characteristics of plastic AFOs. J. Prosthet. Orthot. 5, 47–52 (1993)Google Scholar
- 7.Singer, M.L., Kobayashi, T., Lincoln, L.S., Orendurff, M.S., Foreman, K.B.: The effect of ankle-foot orthosis plantarflexion stiffness on ankle and knee joint kinematics and kinetics during first and second rockers of gait in individuals with stroke. Clin. Biomech. 29, 1077–1080 (2014)CrossRefGoogle Scholar