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Using robotics to teach the spinal cord to walk
Ray D de Leon1, Marc D Kubasak, Patricia E Phelps
1Department of Kinesiology and Nutritional Science, California State University, 5151 State University Drive, Los Angeles, CA 90032, USA. rdeleon@calstatela.edu
Brain Research. Brain Research Reviews
|February 19, 2003
Summary
This study introduces the rat stepper, a robotic device for hindlimb locomotor training in rats with spinal cord injuries. Robot-assisted training improved stepping by enhancing limb lift and swing trajectory, showing promise for rehabilitation.
Area of Science:
- Neuroscience
- Robotics
- Rehabilitation Engineering
Background:
- Spinal cord injury (SCI) in rats impairs hindlimb locomotion.
- Developing effective rehabilitation strategies for SCI is crucial.
- Robotic devices offer potential for precise and consistent therapeutic interventions.
Purpose of the Study:
- To assess the feasibility of robotically assisted locomotor training in adult rats with complete spinal transection.
- To evaluate the impact of programmed forces on hindlimb stepping.
- To determine if robotic assistance can improve key kinematic parameters of stepping.
Main Methods:
- Development of a robotic device, the 'rat stepper', to apply programmed forces to rat hindlimbs.
- Utilizing the device to impose loads during the stance phase and guide ankle trajectory during the swing phase.
- Observing and analyzing hindlimb stepping patterns in spinally transected rats.
Main Results:
- Applying downward force on the ankle during stance increased limb lift during swing.
- Programming robot arms to guide the ankle along a normal trajectory improved the swing pattern.
- The robotic device facilitated rigorous implementation and evaluation of training parameters.
Conclusions:
- Robotically assisted locomotor training is feasible in rats with complete spinal transection.
- The rat stepper can effectively improve hindlimb stepping kinematics post-injury.
- This technology provides a platform for precise and reproducible SCI rehabilitation research.
Keywords:
Non-programmatic