Kinematics and kinetics with an adaptive ankle foot system during stair ambulation of transtibial amputees

Alimusaj, Merkur; Fradet, Laetitia; Braatz, Frank; Gerner, Hans Jürgen; Wolf, Sebastian I.

doi:10.1016/j.gaitpost.2009.06.009

Cited by 83 publications

(100 citation statements)

References 18 publications

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“…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. Our study is the first to quantify MTC at different speeds and inclines and to report a reduced likelihood of tripping by people with TTAs.…”

Section: Discussionmentioning

confidence: 99%

“…However, older adults with faster walking speeds have been shown to fall at greater rates following a laboratory-induced trip because of greater angular momentum [47], and in the community faster walking speed is associated with greater incidence of outdoor falls [48][49] where, compared with indoor falls, tripping is more prevalent [3,50]. Third, in contrast to previous studies with the ProprioFoot, which have compared outcome variables with and without the adaptive features turned on [32][33][34], the current study employed a pseudo-crossover design. Thus, it is possible that differences in MTC may be attributed to differences in foot design that are independent of inertial differences [51][52].…”

Section: Figurementioning

confidence: 93%

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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%

Section: Figurementioning

confidence: 93%

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

et al. 2014

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“…Interestingly, the non-PVD group demonstrated an improvement in their AMPPRO scores after initial training and with the Proprio foot, which would suggest that the Proprio foot improved the function in a select group. The Proprio foot has been described in the literature as a quasipassive prosthetic ankle that can actively change the ankle angle in swing phase of level walking and ascending and descending ramps and stairs in order to improve the knee kinematics of the amputated limb during late stance and throughout the swing phase of gait [41][42][43]. Agrawal et al found that the Proprio foot promoted higher symmetry in level walking between the intact and prosthetic limb than other prosthetic feet [43].…”

Section: Discussionmentioning

confidence: 99%

Application of self-report and performance-based outcome measures to determine functional differences between four categories of prosthetic feet

Gailey

Gaunaurd

Agrawal

et al. 2012

JRRD

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Abstract-Weand five without PVD, completed testing. Subjects were tested at baseline and after receiving training with their existing prosthesis and with the study socket and four prosthetic feet, i.e., SACH (solid ankle cushion heel), SAFE (stationary attachment flexible endoskeletal), Talux, and Proprio feet, over 8 to 10 weeks. Training was administered between testing sessions. No differences were detected by the PEQ-13, LCI, 6MWT, or SAM following training and after fitting with test feet. The AMPPRO demonstrated differences following training with the existing prosthesis in the PVD group and between selected feet from baseline testing (p

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“…After title, abstract, and full-text screening, 21 articles were included for the final review [6][7]9,[28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. Five additional articles were included by searching the references of included articles (n = 3) [8,18,46] and from our recent electronic search in February 2014 (n = 2) [47][48].…”

Section: Study Selectionmentioning

confidence: 99%

“…No additional articles satisfying the inclusion criteria were retrieved from the electronic alerts. Of the final 26 articles, 9 investigated kinematics in persons with TFA [8][9]18,[29][30]35,[38][39][40] and 12 in persons with TTA [6,28,[31][32][33][34]36,[41][42][45][46][47]; 5 investigated both persons with TFA and TTA [7,37,[43][44]48].…”

Section: Study Selectionmentioning

confidence: 99%

Spinal, pelvic, and hip movement asymmetries in people with lower-limb amputation: Systematic review

et al. 2015

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Abstract-Following amputation, people with transfemoral amputation (TFA) and transtibial amputation (TTA) adapt with asymmetrical movements in the spinal and lower-limb joints. The aim of this review is to describe the trunk, lumbopelvic, and hip joint movement asymmetries of the amputated limb of people with TFA and TTA during functional tasks as compared with the intact leg and/or referent leg of nondisabled controls. Electronic databases were searched from inception to February 2014. Studies with kinematic data comparing (1) amputated and intact leg and (2) amputated and referent leg of nondisabled controls were included (26 articles). Considerable heterogeneity in the studies precluded data pooling. During stance phase of walking in participants with TFA, there is moderate evidence for increased trunk lateral flexion toward the amputated limb as compared with the intact leg and increased anterior pelvic tilt as compared with nondisabled controls. None of the studies investigated spinal kinematics during other functional tasks such as running, ramp walking, stair climbing, or obstacle crossing in participants with TFA or TTA. Overall, persons with TFA adapt with trunk and pelvic movement asymmetries at the amputated limb to facilitate weight transfer during walking. Among participants with TTA, there is limited evidence of spinal and pelvic asymmetries during walking.

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Kinematics and kinetics with an adaptive ankle foot system during stair ambulation of transtibial amputees

Cited by 83 publications

References 18 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

Application of self-report and performance-based outcome measures to determine functional differences between four categories of prosthetic feet

Spinal, pelvic, and hip movement asymmetries in people with lower-limb amputation: Systematic review

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