Navigation Links
Veterans Affairs Researchers Study Benefits of Robot for Ankle Rehabilitation
Date:6/25/2009

Researchers at the Baltimore Veterans Affairs (VA) Medical Center and the University of Maryland School of Medicine are conducting research using a novel ankle robot ("Anklebot"), invented by researchers at the Massachusetts Institute of Technology and sponsored by the Department of Veterans Affairs, with stroke patients at the Baltimore VA Medical Center. The design, mechanical characterization and preliminary clinical application of this ankle robot are presented in the June issue of IEEE Transactions on Robotics: Special Issue on Rehabilitation Robotics, the premiere and most-cited journal in robotics research.

Baltimore, MD (PRWEB) June 25, 2009 -- Researchers at the Baltimore Veterans Affairs (VA) Medical Center and the University of Maryland School of Medicine are conducting research using a novel ankle robot ("Anklebot"), invented by researchers at the Massachusetts Institute of Technology and sponsored by the Department of Veterans Affairs, with stroke patients at the Baltimore VA Medical Center. The design, mechanical characterization and preliminary clinical application of this ankle robot are presented in the June issue of IEEE Transactions on Robotics: Special Issue on Rehabilitation Robotics, the premiere and most-cited journal in robotics research.

Over 790,000 Americans suffer strokes each year. In the United States, close to 5 million stroke victims are alive today. Reduced mobility and increased fall risk are significant long-term health problems facing those who have chronic gait deficits resulting from stroke. In response, researchers at the Baltimore VA Medical Center and the University of Maryland School of Medicine are using the Anklebot to augment current therapies for improving gait and balance function after stroke.

"Gait problems due to stroke and other neurological diseases are an important cause of disability," said Dr. Christopher Bever, co-author and director of Research & Development for the VA Maryland Health Care System. "Conventional treatments are not always effective. The availability of robotic assistive devices would represent an important new approach to therapy that would benefit many patients."

The Anklebot is an impedance-controlled exoskeleton that can be worn during over-ground or treadmill walking, or in seated-recumbent positions for ankle training. The Anklebot has versatile controls that allow for assisting users on an "assist-as-needed" basis when they cannot complete a movement. It can also resist movement providing a modality for ankle resistance training, or it can simply record ankle kinematics and kinetics for application as a clinical measurement or evaluation instrument.

In addition to reporting on the design and mechanical characteristics of the Anklebot, the study findings also present clinical data to demonstrate the potential of this device as an efficient clinical measurement tool to estimate intrinsic ankle properties; e.g. ankle stiffness in young healthy individuals.

"This study demonstrates that ankle stiffness is a strongly direction-dependent property, and we have for the first time, reported its behavior in the frontal plane, a degree of freedom that is critical in maintaining dynamic balance," said lead author Anindo Roy, PhD, assistant professor of neurology, University of Maryland School of Medicine and Robotics Engineer, Rehabilitation Research & Development at the Baltimore VA Medical Center.

In a separate but related study submitted to the Journal of Neurophysiology, Dr. Roy and colleagues have extended their results to measure ankle stiffness using the Anklebot in chronic stroke survivors and have identified frontal plane ankle stiffness to be a potential signature of ankle pathology following stroke.

An on-going clinical study is also being conducted at the Baltimore VA Medical Center that endeavors to help stroke survivors, including veterans, achieve improvement in their gait and balance function via ankle robot-assisted therapy. Using a paradigm that involves one of the video games, researchers found that subjects with stroke universally enjoyed and tolerated the robotic training. The video game requires patients to move their paretic toes "up or down" while wearing the Anklebot that moves a screen cursor "up or down" in order to maneuver through targets that approach across the screen at different vertical levels. With novel motivational elements of scoring and real-time performance feedback, the stroke patients were able to perform hundreds of targeted ankle movements in response to visual stimuli and robotic assistance in each training session.

Thus far, the study has demonstrated that stroke rehabilitation, when aided by the ankle robot that guides movement of ankles, providing customizable robotic assistance (as-needed), significantly improves walking function and ankle motor control recovery as well as decreases ankle impairments in chronic stroke survivors. "Our findings already indicate that this device has the potential to evoke positive changes in walking speed, reduce ankle stiffness and improve ankle motor control as indicated by increased smoothness and speed of targeted ankle movement," said Dr. Roy, one of the lead investigators of this study. "In fact, some of these benefits are gained and retained even after a single session of playing the video game with the robot engaged."

Based on current findings, VA, University of Maryland and MIT researchers ultimately envision the Anklebot to facilitate insights into human motor recovery, gait, balance and motor learning by providing a customizable, adaptive and quantifiable measurement and rehabilitative instrument.

Future studies will include testing the efficacy of VA intervention on acute stroke patients to evaluate whether robotic-assisted movement therapy has a significant and measurable impact on neurorecovery during the early phase following an injury. These studies will also look at developing impedance-controlled gait algorithms to provide Anklebot facilitated gait training in stroke populations.

Funding for this study was provided in part by the Department of Veterans Affairs Rehabilitation Research and Development Service and in part by Baltimore Veterans Affairs Medical Center's Center of Excellence on Task-Oriented Exercise and Robotics in Neurological Diseases.

For additional information or to request an expert interview contact Kenya Griffin at (410) 605-7098.

# # #

Read the full story at http://www.prweb.com/releases/stroke_rehabilitation/robotics_research/prweb2578954.htm.


'/>"/>
Source: PRWeb
Copyright©2009 Vocus, Inc.
All rights reserved  

Related medicine news :

1. Easter Seals Launches Program for Veterans Returning from Iraq and Afghanistan with Traumatic Brain Injuries
2. Lilly Grant to VA Will Enhance Services for Returning Combat Veterans
3. The Jericho Project Announces Rehabilitation Residence for Homeless and Low-Income Veterans
4. Mismanagement at North Florida/South Georgia Veterans Health System Results in Chronic Staff Shortages, Budget Issues
5. Younger Veterans at Greater Suicide Risk
6. Key findings for all veterans seen in depression and suicide study
7. Knights of Columbus to Distribute Wheelchairs to Veterans in Need
8. Chicago Bears Players Visit Hospitalized Veterans
9. Shape Shifting on Veterans Day
10. Knights to Distribute $1 Million Worth of Wheelchairs for Veterans
11. Report Release: Veterans for America Finds Care for PTSD and TBI Inadequate
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Veterans Affairs Researchers Study Benefits of Robot for Ankle Rehabilitation
(Date:6/23/2017)... ... June 23, 2017 , ... Dr. ... New York, has recently begun offering three new minimally invasive procedures to patients ... procedures and reducing downtime, Dr. Rubinstein is excited to bring microneedling, microneedling facials, ...
(Date:6/23/2017)... ... June 23, 2017 , ... Ensuring meat ... new videos highlight the importance of correctly using a meat thermometer. The videos ... done extensive research on consumer food safety habits. Dr. Bruhn explains the variety ...
(Date:6/23/2017)... ... June 23, 2017 , ... Ross Insurance Agency ... the Federal Emergency Management Agency’s (FEMA) recent update of flood zones, more people ... the Biggert-Waters Act was enacted to reflect the actual risk in flood zone ...
(Date:6/23/2017)... ... June 23, 2017 , ... All-Star Insurance, a family managed agency that offers ... Texas, is announcing the launch of a new charity drive to benefit women in ... United States reveal that an estimated 252, 710 new cases of invasive or high ...
(Date:6/22/2017)... ... June 22, 2017 , ... United Benefit Advisors ... Whipple & Company as its newest Partner Firm. Headquartered in Coconut Creek, Florida, ... risk while tailoring optimized benefit packages that strengthen the relationship between employer and ...
Breaking Medicine News(10 mins):
(Date:6/12/2017)... 12, 2017 Kineta, Inc., a biotechnology company focused ... Vice President of R&D and Head of Virology Kristin ... Preparedness for the Northwest and Beyond meeting sponsored by ... 14, 2017 from 8:30-10:30 AM PDT at the Agora Conference ... Dr. Bedard will be joined by other leaders in ...
(Date:6/9/2017)... PALO ALTO, Calif. , June 9, 2017 /PRNewswire/ ... medical device company focused on the design, manufacture, sale ... updated the market on the progress of its commercial ... AeroForm is now available in more than one hundred ... country. AeroForm offers a needle-free alternative ...
(Date:6/8/2017)... Responding to Heath Ledger,s father,s recent call for ... Chris Cornell in May, the mental health watchdog group, ... psychiatric drug side effects search engine ... risks. The father of the late actor ... has called for tighter rules on prescription drugs. Speaking at ...
Breaking Medicine Technology: