Kinematic comparison of walking on uneven ground using powered and unpowered prostheses

Gates, Deanna H.; Aldridge, Jennifer M.; Wilken, Jason M.

doi:10.1016/j.clinbiomech.2013.03.005

Cited by 50 publications

(38 citation statements)

References 24 publications

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“…Joint kinematics at instance of minimum toe clearance, in degrees, presented as average ± standard deviation for level-only condition at selfselected velocity and as estimated marginal means ± standard error across both level and incline condition (at self-selected velocity). In general, the evidence supporting the use of microprocessor-controlled prosthetic feet for improving balance, function, and/or mobility of people with amputation is limited and has only recently begun to appear in the literature (e.g., references [25][26][27][28][29][30]). At present, there are few English-written studies of the ProprioFoot, and those that exist have focused on socket pressures [31], hip and knee kinematics and kinetics [32][33], gait economy [34][35], and related aspects of gait [36][37] but not on MTC.…”

Section: Discussionmentioning

confidence: 99%

Active dorsiflexing prostheses may reduce trip-related fall risk in people with transtibial amputation

et al. 2014

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Abstract-People with amputation are at increased risk of falling compared with age-matched, nondisabled individuals. This may partly reflect amputation-related changes to minimum toe clearance (MTC) that could increase the incidence of trips and fall risk. This study determined the contribution of an active dorsiflexing prosthesis to MTC. We hypothesized that regardless of speed or incline the active dorsiflexion qualities of the ProprioFoot would significantly increase MTC and decrease the likelihood of tripping. Eight people with transtibial amputation walked on a treadmill with their current foot at two grades and three velocities, then repeated the protocol after 4 wk of accommodation with the ProprioFoot. A mixed-model, repeated-measures analysis of variance was used to compare MTC. Curves representing the likelihood of tripping were derived from the MTC distributions and a multiple regression was used to determine the relative contributions of hip, knee, and ankle angles to MTC. Regardless of condition, MTC was approximately 70% larger with the ProprioFoot (p < 0.001) and the likelihood of tripping was reduced. Regression analysis revealed that MTC with the ProprioFoot was sensitive to all three angles, with sensitivity of hip and ankle being greater. Overall, the ProprioFoot may increase user safety by decreasing the likelihood of tripping and thus the pursuant likelihood of a fall.

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Section: Discussionmentioning

confidence: 99%

Active dorsiflexing prostheses may reduce trip-related fall risk in people with transtibial amputation

et al. 2014

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“…3,14,19 Therefore at stance phase of gait the Proprio Foot by Ossur resembles a passive elastic prosthesis. 3,14,19,51 Ultimately, no positive work is affected about the ankle joint during stance phase. 3,6,14,19 …”

Section: Proprio Foot By Ossurmentioning

confidence: 98%

“…72 Local coordinate systems for identifying joint segments for congruent tracking of joint motion have been identified by the International Society of Biomechanics. 51,73 Motion capture systems primarily determine joint angles. 21,74 \Biomechanics and Motor Control of Human Movement" by Winter advocates seven markers for full definition of the angular orientation of the leg.…”

Section: Experimental Sensor Equipment For Evaluating Prosthesis Effimentioning

confidence: 99%

“…With the powered prosthesis, subjects demonstrated a relative increase in self-selected walking speed and improved ankle joint kinematics. 51 A further extrapolation of the powered prosthesis technology space involved the incorporation of a neuromuscular model to induce more biomimetic adaptive behavior for user-determined modifications during walking. The goal was to enable the powered prosthesis to identify the need for increasing work about the ankle with increase in walking speed.…”

Section: -22mentioning

confidence: 99%

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Advances Regarding Powered Prosthesis for Transtibial Amputation

LeMoyne

2015

J. Mech. Med. Biol.

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The necessity for developing advanced prostheses are apparent in light of projections that the forecast for the number of people enduring amputation will double by the year 2050. The transtibial powered prosthesis that enables positive mechanical work about the ankle during the powered plantar flexion aspect of stance phase constitutes a paradigm shift in available transtibial prostheses. The objective of the review is to advocate the state of the art regarding the transtibial powered prosthesis. The historic origins of the prosthesis and motivations for amputation are clarified. The phases of gait and the compensatory mechanisms and asymmetries inherent with passive transtibial prostheses are described. The three general classes of transtibial prosthesis (passive, energy storage and return and powered prostheses) are defined. Subsystems that are integral to the powered prosthesis are explained, such as the series elastic actuator and control architecture. Gait analysis systems and their role for the test and evaluation of energy storage and return and powered prostheses are demonstrated. Future advanced concepts; such as the integration of titin into novel muscle models that account for force enhancement and force depression including their implications for cutting edge bio-inspired actuators are elucidated. The review accounts for the evolution of the prosthetic device with regards to the scope of transtibial amputation and assesses the current state-of-the-art.

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“…Although these known differences exist, rarely are these differences accounted for when modeling the limb for inverse dynamics estimates (Gates et al, 2013;Miller, 1987;Sawers and Hahn, 2010). Smith et al (2014) recently described an oscillation rack system to directly measure the inertial properties of the prosthesis and residual limb of persons with TTA to provide more accurate, subject-specific inertial properties.…”

Section: Introductionmentioning

confidence: 99%

A general model for estimating lower extremity inertial properties of individuals with transtibial amputation

Ferris

Smith

Heise

et al. 2017

Journal of Biomechanics

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Kinematic comparison of walking on uneven ground using powered and unpowered prostheses

Cited by 50 publications

References 24 publications

Active dorsiflexing prostheses may reduce trip-related fall risk in people with transtibial amputation

Active dorsiflexing prostheses may reduce trip-related fall risk in people with transtibial amputation

Advances Regarding Powered Prosthesis for Transtibial Amputation

A general model for estimating lower extremity inertial properties of individuals with transtibial amputation

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