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This article and any supplementary material should be cited as follows: Johnson L, De Asha AR, Munjal R, Kulkarni J, Buckley JG. Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle. J Rehabil Res Dev. 2014;51(3):xx–xx. http://dx.doi.org/10.1682/JRRD.2013.05.0126 Slideshow Project DOI:10.1682/JRRD.2013.05.0126JSP Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle Louise Johnson, PhD; Alan R. De Asha, MSc; Ramesh Munjal, FRCS; Jai Kulkarni, FRCS; John G. Buckley, PhD
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This article and any supplementary material should be cited as follows: Johnson L, De Asha AR, Munjal R, Kulkarni J, Buckley JG. Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle. J Rehabil Res Dev. 2014;51(3):xx–xx. http://dx.doi.org/10.1682/JRRD.2013.05.0126 Slideshow Project DOI:10.1682/JRRD.2013.05.0126JSP Aim – Investigate if using prosthetic foot with hydraulically controlled articulating ankle that allows foot to be relatively dorsiflexed at toe-off and throughout swing increases minimum toe clearance (MTC). Relevance – Most clinically available prosthetic feet have rigid attachment or incorporate “ankle” device allowing elastic articulation during stance, with foot returning to “neutral” position at toe-off.
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This article and any supplementary material should be cited as follows: Johnson L, De Asha AR, Munjal R, Kulkarni J, Buckley JG. Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle. J Rehabil Res Dev. 2014;51(3):xx–xx. http://dx.doi.org/10.1682/JRRD.2013.05.0126 Slideshow Project DOI:10.1682/JRRD.2013.05.0126JSP Method 21 people with unilateral transtibial amputation completed overground walking trials using their habitual prosthetic foot with rigid or elastic articulating attachment and a foot with a hydraulic ankle attachment (hyA-F). MTC and other kinematic variables were assessed across multiple trials.
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This article and any supplementary material should be cited as follows: Johnson L, De Asha AR, Munjal R, Kulkarni J, Buckley JG. Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle. J Rehabil Res Dev. 2014;51(3):xx–xx. http://dx.doi.org/10.1682/JRRD.2013.05.0126 Slideshow Project DOI:10.1682/JRRD.2013.05.0126JSP Results When using hyA-F: – Mean MTC increased on both limbs. On prosthetic limb, this was partly due to device being in its fully dorsiflexed position at toe-off, which reduced the “toes down” foot angle throughout swing. – Walking speed increased and was associated with greater swing-limb hip flexion on prosthetic side, which may have contributed to increased mean MTC. – Variability in MTC increased on prosthetic side, but did not increase risk of tripping.
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This article and any supplementary material should be cited as follows: Johnson L, De Asha AR, Munjal R, Kulkarni J, Buckley JG. Toe clearance when walking in people with unilateral transtibial amputation: Effects of passive hydraulic ankle. J Rehabil Res Dev. 2014;51(3):xx–xx. http://dx.doi.org/10.1682/JRRD.2013.05.0126 Slideshow Project DOI:10.1682/JRRD.2013.05.0126JSP Conclusion Using hyA-F could increase MTC and walking speed in persons with amputation.
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