Advisor Information
Sara Myers
Location
Room 232
Presentation Type
Oral Presentation
Start Date
1-3-2019 2:15 PM
End Date
1-3-2019 3:15 PM
Abstract
Single Session Walking Adaptations to an Ankle Foot Orthosis in Patients with Claudication and Peripheral Artery Disease
Todd Leutzinger1, 2, Iraklis Pipinos2, 3, Jason Johanning2, 3, Mukul Mukherjee1, Sara Myers1, 2
1Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE USA
2Nebraska and Western Iowa Veterans Affairs’ Medical Center, Omaha, NE USA
3Department of Surgery, University of Nebraska Medical Center, Omaha, NE USA
Email: tleutzinger@unomaha.edu
Peripheral artery disease (PAD) is an atherosclerotic disease affecting the arteries of the lower extremities [1]. The primary symptom of PAD is intermittent claudication, classified as walking-induced ischemic leg pain. Walking with a carbon fiber ankle foot orthosis (AFO) has shown promise in improving maximal walking distance in individuals with PAD [2]. The current study evaluated if a single walking session is sufficient for individuals with PAD to adapt to an AFO. Twelve patients with PAD performed a standardized progressive load treadmill test until claudication pain forced them to stop [3]. Subjects performed the test twice in each data collection, once with the AFO and once without the AFO (NAF). Stance time, swing time, and joint angle coefficient of determination values between AFO and NAF walking were analyzed at three levels of claudication pain: pain free (PF), initial claudication (IC), and absolute claudication causing the end of the trial (AC). The AFO did not alter subjects’ spatiotemporal gait parameters, and there was no significant effect of level of claudication pain on coefficient of determination values when walking with the AFO. However, there were significant effects for coefficient of determination values between AFO and NAF walking for all joints at all levels of claudication pain. These results indicate subjects were unable to adapt joint angle patterns in a single walking session when wearing the AFO. Future studies should investigate how individuals with PAD adapt to an AFO over multiple walking trials.
References
[1] Hiatt et al. (2008). Circulation, 118: 2826-2829
[2] Beier et al., (2018), ASB, Abstract nr 980
[3] Gardner et al. (1991). Med Sci Sports Exerc, 23: 402-408
Walking Adaptations to an Ankle Foot Orthosis in Individuals with Peripheral Artery Disease
Room 232
Single Session Walking Adaptations to an Ankle Foot Orthosis in Patients with Claudication and Peripheral Artery Disease
Todd Leutzinger1, 2, Iraklis Pipinos2, 3, Jason Johanning2, 3, Mukul Mukherjee1, Sara Myers1, 2
1Department of Biomechanics, University of Nebraska at Omaha, Omaha, NE USA
2Nebraska and Western Iowa Veterans Affairs’ Medical Center, Omaha, NE USA
3Department of Surgery, University of Nebraska Medical Center, Omaha, NE USA
Email: tleutzinger@unomaha.edu
Peripheral artery disease (PAD) is an atherosclerotic disease affecting the arteries of the lower extremities [1]. The primary symptom of PAD is intermittent claudication, classified as walking-induced ischemic leg pain. Walking with a carbon fiber ankle foot orthosis (AFO) has shown promise in improving maximal walking distance in individuals with PAD [2]. The current study evaluated if a single walking session is sufficient for individuals with PAD to adapt to an AFO. Twelve patients with PAD performed a standardized progressive load treadmill test until claudication pain forced them to stop [3]. Subjects performed the test twice in each data collection, once with the AFO and once without the AFO (NAF). Stance time, swing time, and joint angle coefficient of determination values between AFO and NAF walking were analyzed at three levels of claudication pain: pain free (PF), initial claudication (IC), and absolute claudication causing the end of the trial (AC). The AFO did not alter subjects’ spatiotemporal gait parameters, and there was no significant effect of level of claudication pain on coefficient of determination values when walking with the AFO. However, there were significant effects for coefficient of determination values between AFO and NAF walking for all joints at all levels of claudication pain. These results indicate subjects were unable to adapt joint angle patterns in a single walking session when wearing the AFO. Future studies should investigate how individuals with PAD adapt to an AFO over multiple walking trials.
References
[1] Hiatt et al. (2008). Circulation, 118: 2826-2829
[2] Beier et al., (2018), ASB, Abstract nr 980
[3] Gardner et al. (1991). Med Sci Sports Exerc, 23: 402-408