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45 results on '"Hutchins, Stephen W."'

8. The influence of thermoplastic thoraco lumbo sacral orthoses on standing balance in subjects with idiopathic scoliosis

Author

Khanal, Minoo, primary, Arazpour, Mokhtar, additional, Bahramizadeh, Mahmood, additional, Samadian, Mohammad, additional, Hutchins, Stephen W, additional, Kashani, Reza Vahab, additional, Mardani, Mohammad A, additional, Tari, Hossein Vahid, additional, Aboutorabi, Atefeh, additional, Curran, Sarah, additional, and Sadeghi, Heidar, additional

Published
2016
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22. Is it important to position foot in subtalar joint neutral position during non-weight-bearing molding for foot orthoses?

Author

Lee, Winson, Lee, Christina, Leung, Aaron, Hutchins, Stephen W, Lee, Winson, Lee, Christina, Leung, Aaron, and Hutchins, Stephen W

Abstract

When taking molds for foot orthoses, it is accepted practice to position the subtalar joint in its neutral position. However, foot orthoses have no contact with the talus, and this leads to a hypothesis that as long as there is correction available to appropriately align the forefoot relative to the hindfoot when taking a mold, changes in subtalar joint angles do not lead to significant alterations in the plantar surface shapes of the molds taken. This study tested this presumption with 20 subjects between 22 and 46 years old. During non-weight-bearing casting, the subtalar joints were aligned at positions of 4° of eversion, 2° of eversion, 2° of inversion, and in neutral. At each orientation, forces were applied over the forefoot such that the metatarsal heads were aligned with the rearfoot. Digital scanning was used to analyze the shape of each negative mold. There were significant changes in projection volume in different subtalar joint orientations. However, the changes in arch heights, navicular height, and protrusion were insignificant and very small. It is therefore suggested that as long as the forefoot and hindfoot are appropriately aligned, variations in the orientation of the subtalar joint would be acceptable.

Published
2012

31. Correlations between Berg balance scale and gait speed in individuals with stroke wearing ankle–foot orthoses – a pilot study.

Author

Kobayashi, Toshiki, Leung, Aaron K. L., Akazawa, Yasushi, and Hutchins, Stephen W.

Subjects
STATISTICAL correlation, POSTURAL balance, RESEARCH funding, PILOT projects, STROKE patients, FOOT orthoses
Abstract

Purpose: The Berg balance scale (BBS) is commonly used to assess balancing ability in patients with stroke. The BBS may be a good candidate for clinical assessment prior to orthotic intervention, if it correlates well with outcome measures such as gait speed. The purpose of this study was to investigate the correlation between the BBS measured prior to walking with an ankle-foot orthosis (AFO) and specific temporal-spatial parameters of gait when walking with an AFO donned.Methods: Eight individuals with chronic stroke participated in this study. Balancing ability was assessed using the BBS, while temporal–spatial parameters of gait (gait speed, bilateral step length, stride length and step width) were measured using a three-dimensional motion analysis system. The correlations between the BBS and gait parameters were investigated using a non-parametric Kendall’s Tau (τ) correlation analysis.Results: The BBS showed correlations with gait speed (τ = 0.64,p < 0.05), the step length of the affected side (τ = 0.74,p < 0.05), and the stride length (τ = 0.64,p < 0.05).Conclusions: Assessment of the BBS prior to AFO prescription may potentially help clinicians to estimate the gait speed achievable following orthotic intervention in patients with stroke.Implications for RehabilitationAssessment of the BBS prior to AFO prescription may help orthotists to estimate the gait speed following an orthotic intervention in patients with stroke.Assessment of the BBS prior to AFO prescription may help orthotists to understand overall balance and postural control abilities in patients with stroke.A larger scale multifactorial analysis is warranted to confirm the results of this pilot study. [ABSTRACT FROM PUBLISHER]

Published
2016
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44. Techniques to measure rigidity of ankle-foot orthosis: A review.

Author

Toshiki Kobayashi, Leung, Aaron K. L., and Hutchins, Stephen W.

Subjects
*MATERIALS testing, *ANKLE, *ELASTICITY, *FOOT, *ORTHOPEDIC apparatus, *MEDICAL equipment design, *STRETCH (Physiology)
Abstract

We performed this review to provide a clearer understanding of how to effectively measure ankle-foot orthosis (AFO) rigidity. This information is important to ensure appropriate orthotic intervention in the treatment of patients with pathological gait. The two main approaches to the investigation of AFO rigidity are (1) bench-testing analyses, in which an AFO is fixed or attached to a measurement device, and (2) functional analyses, in which measurements are taken while a subject is walking with an AFO in situ. This review summarizes and classifies the current state of knowledge of AFO rigidity testing methods. We analyzed the strengths and weaknesses of the methods in order to recommend the most reliable techniques to measure AFO rigidity. The information obtained from this review article would, therefore, benefit both clinicians and engineers involved in the application and design of AFOs. [ABSTRACT FROM AUTHOR]

Published
2011
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45. Is it important to position foot in subtalar joint neutral position during non-weight-bearing molding for foot orthoses?

Author

Lee, Winson C. C., Lee, Christina K. L., Leung, Aaron K. L., and Hutchins, Stephen W.

Subjects
*GONIOMETRY (Anatomy), *HEEL bone, *ANKLEBONE, *ANALYSIS of variance, *BIOMECHANICS, *COMPUTER-aided design, *CONFIDENCE intervals, *STATISTICAL correlation, *FOOT, *RANGE of motion of joints, *LYING down position, *ORTHOPEDIC apparatus, *MEDICAL equipment design, *PROBABILITY theory, *REGRESSION analysis, *RESEARCH funding, *STANDING position, *STATISTICS, *STRUCTURAL frame models, *DATA analysis, *INTER-observer reliability, *REPEATED measures design, *DESCRIPTIVE statistics, *PHYSIOLOGY, RESEARCH evaluation
Abstract

When taking molds for foot orthoses, it is accepted practice to position the subtalar joint in its neutral position. However, foot orthoses have no contact with the talus, and this leads to a hypothesis that as long as there is correction available to appropriately align the forefoot relative to the hindfoot when taking a mold, changes in subtalar joint angles do not lead to significant alterations in the plantar surface shapes of the molds taken. This study tested this presumption with 20 subjects between 22 and 46 years old. During non-weight-bearing casting, the subtalar joints were aligned at positions of 4° of eversion, 2° of eversion, 2° of inversion, and in neutral. At each orientation, forces were applied over the forefoot such that the metatarsal heads were aligned with the rearfoot. Digital scanning was used to analyze the shape of each negative mold. There were significant changes in projection volume in different subtalar joint orientations. However, the changes in arch heights, navicular height, and protrusion were insignificant and very small. It is therefore suggested that as long as the forefoot and hindfoot are appropriately aligned, variations in the orientation of the subtalar joint would be acceptable. [ABSTRACT FROM AUTHOR]

Published
2012
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