Concept

Hip

Related publications (117)

Engineering of human meniscus substitute

Injuries to the meniscus are often treated by partial or total meniscectomy, which is known to be associated with detrimental changes in joint function, ultimately increasing the risk of early degenerative joint diseases. Surgical approaches currently in u ...

EPFL2006

On Learning the Statistical Representation of a Task and Generalizing it to Various Contexts

Aude Billard, Sylvain Calinon

This paper presents an architecture for solving generically the problem of extracting the relevant features of a given task in a programming by demonstration framework and the problem of generalizing the acquired knowledge to various contexts. We validate ...

2006

A new approach to accurate measurement of uniaxial joint angles based on a combination of accelerometers and gyroscopes

Kamiar Aminian, Hooman Dejnabadi

A new method of measuring joint angle using a combination of accelerometers and gyroscopes is presented. The method proposes a minimal sensor configuration with one sensor module mounted on each segment. The model is based on estimating the acceleration of ...

2005

Stress Distribution Visualization on Pre- and Post-Operative Virtual Hip Joint

Daniel Thalmann, Ronan Boulic, Sofiane Sarni, Anderson Maciel

In this paper, we present a case study using a spreadsheet-like interface for exploring biomedical datasets generated by a biomechanical model of the hip. The case we analyze here is an osteotomy corrective surgery that reorients the femoral body in relati ...

2005

Optimal femoral head contour segmentation in CT images using dynamic programming

Charles Baur, Gaëtan Marti

We present a new contour segmentation method for femoral head detection in CT images. The principal idea underlying our approach is to represent the contour using active rays. Each ray has internal energy (continuity and smoothness constraints), as well as ...

2004

Evaluation and visualization of stress and strain on soft biological tissues in contact

Daniel Thalmann, Ronan Boulic, Sofiane Sarni, Anderson Maciel

This paper addresses evaluation and visualization of stress and strain on soft biological tissues in contact given three-dimensional models of reconstructed organs from magnetic resonance images (MRI), we use an anatomy-based kinematical model combined wit ...

IEEE2004

Evaluation of an ambulatory system for gait analysis in hip osteoarthritis and after total hip replacement

Kamiar Aminian, Philippe Robert, Bijan Najafi, Hooman Dejnabadi

Spatial and temporal parameters of gait have clinical relevance in the assessment of motor pathologies, particularly in orthopaedics. A new gait analysis system is proposed which consists of (a) an ambulatory device (Physilog(R)) including a set of miniatu ...

2004

A finite element model of the shoulder: application to the comparison of normal and osteoarthritic joints

Alain Farron, Lalaonirina Rakotomanana Ravelonarivo, Philippe Büchler

Objective. The objective of the present study was to develop a numerical model of the shoulder able to quantify the influence of the shape of the humeral head on the stress distribution in the scapula. The subsequent objective was to apply the model to the ...

2002

Spatio-temporal parameters of gait measured by an ambulatory system using miniature gyroscopes

Kamiar Aminian, Philippe Robert, Bijan Najafi

In this study we describe an ambulatory system for estimation of spatio-temporal parameters during long periods of walking. This original method based on wavelet analysis is proposed to compute the values of temporal gait parameters from the angular veloci ...

2002

Gait Features Assessment in Hip Osteoarthritis and Total Hip Replaced Patients Based on an ambulatory System (Physilog)

Kamiar Aminian, Philippe Robert, Bijan Najafi, Hooman Dejnabadi

Osteoarthritis is the most frequent joint pathology throughout the world. Obtaining objective, dynamic and quantified data allowing the evaluation of patients’ progress before and after hip arthroplasty is crucial. Gait analysis can be used for evaluating ...

2002

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