Functional gait analysis of trans-femoral amputees using two different single-axis prosthetic knees with hydraulic swing-phase control

Sapin, E.; Goujon, H.; Almeida, Fabiano de Jesus Furtado; Fodé, Pascale; Lavaste, F.

doi:10.1080/03093640802016639

Cited by 30 publications

(14 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Typically, quantitative assessments of prostheses performances rely on spatio-temporal, kinematic and kinetic gait characteristics [1][2][3][4][5][6]. In particular, the analysis of lower limb joints kinetics (i.e., forces, moments, power) has become critical to compare mechanical performances between adaptive dissipation prosthetic knee units [7][8][9][10][11][12][13][14][15][16][17][18][19] and an anatomical knee joint [2,3,20]. Furthermore, the development of osseointegrated fixations for bone-anchored prostheses requires a better understanding and monitoring of implant and prosthetic loading during locomotion to increase walking abilities (e.g., speed of walking) while assuring safety (e.g., limitation of high loading, fall prevention, breakage of fixation parts) [6,[21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Gait Analysis of Transfemoral Amputees: Errors in Inverse Dynamics Are Substantial and Depend on Prosthetic Design

Dumas

Brånemark

Frossard

2017

IEEE Trans. Neural Syst. Rehabil. Eng.

View full text Add to dashboard Cite

To cite this version:Raphaël Dumas, Rickard Brånemark, Laurent Frossard. Gait analysis of transfemoral amputees: errors in inverse dynamics are substantial and depend on prosthetic design. IEEE Transactions on Neural Systems and Rehabilitation Engineering, Institute of Electrical and Electronics Engineers, 2017, 25 (6), pp.679-685. <10.1109/TNSRE.2016.2601378>. 1  Abstract-Quantitative assessments of prostheses performances rely more and more frequently on gait analysis focusing on prosthetic knee joint forces and moments computed by inverse dynamics. However, this method is prone to errors, as demonstrated in comparison with direct measurements of these forces and moments. The magnitude of errors reported in the literature seems to vary depending on prosthetic components. Therefore, the purposes of this study were (A) to quantify and compare the magnitude of errors in knee joint forces and moments obtained with inverse dynamics and direct measurements on ten participants with transfemoral amputation during walking and (B) to investigate if these errors can be characterised for different prosthetic knees.Knee joint forces and moments computed by inverse dynamics presented substantial errors, especially during the swing phase of gait. Indeed, the median errors in percentage of the moment magnitude were 4% and 26% in extension/flexion, 6% and 19% in adduction/abduction as well as 14% and 27% in internal/external rotation during stance and swing phase, respectively. Moreover, errors varied depending on the prosthetic limb fitted with mechanical or microprocessorcontrolled knees.This study confirmed that inverse dynamics should be used cautiously while performing gait analysis of amputees. Alternatively, direct measurements of joint forces and moments could be relevant for mechanical characterising of components and alignments of prosthetic limbs.

show abstract

Section: Introductionmentioning

confidence: 99%

Gait Analysis of Transfemoral Amputees: Errors in Inverse Dynamics Are Substantial and Depend on Prosthetic Design

Dumas

Brånemark

Frossard

2017

IEEE Trans. Neural Syst. Rehabil. Eng.

View full text Add to dashboard Cite

show abstract

“…Rao et al [76] use a three-dimensional biomechanical model to determine upper extremity kinematics of 16 male subjects with low-level paraplegia while performing wheelchair propulsion. Sapin et al [78] report a comparison of the gait patterns of transfemoral amputees using a singleaxis prosthetic knee that coordinates ankle and knee flexions (Proteor's Hydracadence system) with the gait patterns of patients using other knee joints without a knee-ankle link and the gait patterns of individuals with normal gait. In [75], spatiotemporal, kinematics, kinetics, and EMG data as well as the physiological changes associated with gait and ageing are reviewed, in order for the authors to provide gait analysis regarding older people.…”

Section: Physical Modellingmentioning

confidence: 99%

Towards standardisation of user models for simulation and adaptation purposes

Kaklanis

Biswas

Mohamad

et al. 2014

Univ Access Inf Soc

View full text Add to dashboard Cite

The use of user models can be very valuable when trying to develop accessible and ergonomic products and services taking into account users specific needs and preferences. Simulation of userproduct interaction using user models may reveal accessibility issues at the early stages of design and development, and this results to a significant reduction in costs and development time. Moreover, user models can be used in adaptive interfaces enabling the personalised customisation of user interfaces that enhances the accessibility and usability of products and services. This paper presents the efforts of the Virtual User Modelling and Simulation Standardisation VUMS cluster of projects towards the development of an interoperable user model, able to describe both able-bodied and people with various kinds of disabilities. The VUMS cluster is consisted by the VERITAS, MyUI, GUIDE, and VICON FP7 European projects, all involved in user modelling from different perspectives. The main goal of the VUMS cluster was the development of a unified user model that could be used by all the participant projects and that could be the basis of a new user model standard. Currently, within the VUMS cluster, a common user model has been defined and converters that enable the transformation from each projects specific user model to the VUMS user model and vice versa have been developed enabling, thus, the exchange of user models between the projects

show abstract

“…Sapin et al (2008) [ 25] reported a comparison of the gait patterns of trans-femoral amputees using a single-axis prosthetic knee that coordinates ankle and knee flexion's with the gait patterns of patients using other knee joints without a knee-ankle link and the gait patterns of individuals with normal gait. Prince et al (1997) [ 26], reviewed spatio-temporal, kinematics, kinetics and EMG data as well as the physiological changes associated with gait and aging.…”

Section: Virtual Human Modellingmentioning

confidence: 99%

Future Challenges of User Modelling for Accessibility

Mohamad

Kouroupetroglou²,

Kirisci

2014

Universal Access in Human-Computer Interaction. Design and Development Methods for Universal Access

View full text Add to dashboard Cite

Abstract. User models are abstract representations of user properties including their needs, preferences, knowledge, as well as physical, cognitive, and behavioral characteristics. These characteristics are usually represented by variables. User models are instantiated by the declaration of these variables for a particular user or group of users. Such instances of user models are called user profiles. A user profile captures the kind of information about an individual user that is considered by an adaptive system to adapt to aspects of a certain situation and preferences of different users.Complimentarily the process of user modelling can be applied to enhance the accessibility of user interfaces by generating or adapting them according to the particular user needs and preferences represented in the user profiles. In spite of the different approaches in this area, further research and development is necessary, particularly in addressing the need for standards to support the interoperability and portability of user models across implementations. More specifically, one of the main challenges of user modelling is the lack of a common approach for integrating user profiles that support different user models within individual implementations, and for migrating profiles from one implementation to another. This can be attributed to the broad variety of user profiles and the incompatibilities that can occur among them. For example, differences in user profiles can occur due to differences in scope of the modelling, source of information for the modelling, time sensitivity and update methods of the model (static vs. dynamic model). In this paper a thorough review of the latest developments in the area of user modelling for accessibility is presented. Further, in the core of the paper future potentials and challenges that this technology has to face in order to gain significant traction and adoption from wider audiences is analyzed.

show abstract

Functional gait analysis of trans-femoral amputees using two different single-axis prosthetic knees with hydraulic swing-phase control

Cited by 30 publications

References 6 publications

Gait Analysis of Transfemoral Amputees: Errors in Inverse Dynamics Are Substantial and Depend on Prosthetic Design

Gait Analysis of Transfemoral Amputees: Errors in Inverse Dynamics Are Substantial and Depend on Prosthetic Design

Towards standardisation of user models for simulation and adaptation purposes

Future Challenges of User Modelling for Accessibility

Contact Info

Product

Resources

About