PMID: 9631330Jun 19, 1998Paper

Segment velocities in normal and transtibial amputees: prosthetic design implications

IEEE Transactions on Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
S S RaoJ Perry

Abstract

Dynamic elastic response foot and ankle prostheses (Seattle-Lite, Flex Foot, etc.) used by transtibial amputees feature substantial design improvements over conventional designs (SACH, Single Axis, etc.). Despite this progress, transtibial amputees continue to expend greater energy than normals. Increased residual limb EMG data and altered gait patterns suggest that impaired mobility may be the cause of overactive muscles in early stance. Prosthetic mobility was therefore quantified by measuring foot, shank and thigh velocities in nine transtibial amputees, wearing three different foot designs: Single Axis (SA), Seattle Lite (SL) and Flex Foot (FF). The magnitude, timing and rate of segment velocities for each prosthetic design, characterizing early stance mobility, were compared with corresponding measures in normal, nonamputee (NA) controls using Dunnett's test. Regardless of foot type, transtibial (TT) amputees walked slower than non amputee controls (63.3-65.8 m/min versus 78.5 m/min, p < 0.05) and their stride length was shorter (1.21-1.26 m versus 1.41 m, p < 0.01). In early stance, peak foot and shank velocities were lower (p < 0.01) for both the SL and FF while only shank velocity was lower (p < 0.01) with the SA compar...Continue Reading

References

Jun 1, 1991·American Journal of Physical Medicine & Rehabilitation·A GitterD M DeGroot
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Jan 1, 1972·Journal of Biomechanics·G L KinzelB M Hillberry
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Citations

Oct 13, 1999·The Journal of Orthopaedic and Sports Physical Therapy·M J HsuD G Shurr
Sep 28, 2017·Prosthetics and Orthotics International·Andrea B WanamakerAjit Mw Chaudhari
Apr 26, 2011·Prosthetics and Orthotics International·David Rusaw, Nerrolyn Ramstrand
Jan 25, 2003·American Journal of Physical Medicine & Rehabilitation·Tai Ryoon HanHyung Ik Shin
Feb 20, 2004·The Cochrane Database of Systematic Reviews·C HofstadK Postema
Jun 5, 2002·Prosthetics and Orthotics International·J S RietmanJ H B Geertzen
Jan 1, 2016·Journal of Rehabilitation Research and Development·Matthew J MajorDavid Howard
May 29, 2018·European Journal of Sport Science·Brent James Raiteri

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