An ankle-foot orthosis (AFO) is commonly used to help subjects with weakness of ankle dorsiflexor muscles due to peripheral or central nervous system disorders. Both these disorders are due to the weakness of the tibialis anterior muscle, which results in the lack of dorsiflexion assist moment. The deformity and muscle, weakness of one joint in the lower extremity influences the stability of the adjacent joints, thereby requiring compensatory adaptations. We present an innovative ankle-foot orthosis (AFO). The prototype AFO would introduce greater functionality over currently marketed devices by means of its pronation-supination degree of freedom in addition to flexion/extension. This orthosis can be used to measure joint forces and moments applied by the human at both joints. In the future, by incorporation of actuators in the device, it will be used as a training device to restore a normal walking pattern.
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e-mail: agrawala@me.udel.edu
e-mail: sangwan@udel.edu
e-mail: sai@udel.edu
e-mail: agrawal@udel.edu
e-mail: sbinder@udel.edu
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November 2007
Research Papers
Design of a Novel Two Degree-of-Freedom Ankle-Foot Orthosis
Abhishek Agrawal,
Abhishek Agrawal
Graduate Student
Mechanical Engineering Department,
e-mail: agrawala@me.udel.edu
University of Delaware
, Newark, Delaware 19716
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Vivek Sangwan,
Vivek Sangwan
Graduate Student
Mechanical Engineering Department,
e-mail: sangwan@udel.edu
University of Delaware
, Newark, Delaware 19716
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Sai K. Banala,
Sai K. Banala
Graduate Student
Mechanical Engineering Department,
e-mail: sai@udel.edu
University of Delaware
, Newark, Delaware 19716
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Sunil K. Agrawal,
Sunil K. Agrawal
Professor
Mechanical Engineering Department,
e-mail: agrawal@udel.edu
University of Delaware
, Newark, Delaware 19716
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Stuart A. Binder-Macleod
Stuart A. Binder-Macleod
Professor and Chair
Department of Physical Therapy,
e-mail: sbinder@udel.edu
University of Delaware
, Newark, Delaware 19716
Search for other works by this author on:
Abhishek Agrawal
Graduate Student
Mechanical Engineering Department,
University of Delaware
, Newark, Delaware 19716e-mail: agrawala@me.udel.edu
Vivek Sangwan
Graduate Student
Mechanical Engineering Department,
University of Delaware
, Newark, Delaware 19716e-mail: sangwan@udel.edu
Sai K. Banala
Graduate Student
Mechanical Engineering Department,
University of Delaware
, Newark, Delaware 19716e-mail: sai@udel.edu
Sunil K. Agrawal
Professor
Mechanical Engineering Department,
University of Delaware
, Newark, Delaware 19716e-mail: agrawal@udel.edu
Stuart A. Binder-Macleod
Professor and Chair
Department of Physical Therapy,
University of Delaware
, Newark, Delaware 19716e-mail: sbinder@udel.edu
J. Mech. Des. Nov 2007, 129(11): 1137-1143 (7 pages)
Published Online: December 4, 2006
Article history
Received:
May 10, 2005
Revised:
December 4, 2006
Citation
Agrawal, A., Sangwan, V., Banala, S. K., Agrawal, S. K., and Binder-Macleod, S. A. (December 4, 2006). "Design of a Novel Two Degree-of-Freedom Ankle-Foot Orthosis." ASME. J. Mech. Des. November 2007; 129(11): 1137–1143. https://doi.org/10.1115/1.2771231
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