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Alain Farron

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Related publications (62)

Overcorrected glenoid implants to prevent recurrent glenohumeral subluxation after total shoulder arthroplasty: a patient-specific finite element analysis

Alexandre Terrier, Alain Farron

Taylor & Francis Ltd2017

Modelling of the human shoulder as a parallel mechanism without constraints

Philippe Müllhaupt, Alexandre Terrier, Alain Farron, David Ingram, Christoph Anselm Engelhardt

The synthesis of shoulder kinematics, either for simulation in a model or imitation in a robot, is a challenging task because of the contact between shoulder blade and ribcage. As the shoulder moves, the shoulder blade glides over the ribcage. In kinematic ...

Elsevier2016

Stability enhancement using hyaluronic acid gels for delivery of human fetal progenitor tenocytes

Dominique Pioletti, Alain Farron, Corinne Scaletta, Lee Ann Laurent-Applegate, Anthony Grognuz

Tendon afflictions are very common, and their negative impact is high both at the workplace and in leisure activities. Tendinopathies are increasing in prevalence and can lead to tendon ruptures, where healing is a long process with outcomes that are often ...

2016

A framework for forward-dynamics simulation of the human shoulder

Dominique Pioletti, Philippe Müllhaupt, Alexandre Terrier, Alain Farron, Ehsan Sarshari

A vast majority of the available biomechanical models of the human shoulder has been developed based on inverse dynamics, e.g. [1,2]. This imposes a number of limitations on their application. For instance, the glenohumeral joint is approximated as an idea ...

2016

Measurement Properties of the Smartphone-Based B-B Score in Current Shoulder Pathologies

Kamiar Aminian, Alain Farron, Cyntia Duc

This study is aimed at the determination of the measurement properties of the shoulder function B-B Score measured with a smartphone. This score measures the symmetry between sides of a power-related metric for two selected movements, with 100% representin ...

2015

Muscle Moment-Arms: A Key Element in Muscle-Force Estimation

Philippe Müllhaupt, Alexandre Terrier, Alain Farron, David Ingram, Christoph Anselm Engelhardt

A clear and rigorous definition of muscle moment-arms in the context of musculoskeletal systems modelling is presented, using classical mechanics and screw theory. The definition provides an alternative to the tendon excursion method, which can lead to inc ...

Taylor & Francis2015

Importance of a three-dimensional measure of humeral head subluxation in osteoarthritic shoulders

Alexandre Terrier, Alain Farron, Julien Ston

Hypothesis: During total shoulder arthroplasty (TSA), humeral head subluxation may be difficult to manage. Furthermore, there is a risk for postoperative recurrence of subluxation, affecting the outcome of TSA. An accurate evaluation of the subluxation is ...

Elsevier2015

Improving anterior deltoid activity in a musculoskeletal shoulder model – an analysis of the torque-feasible space at the sternoclavicular joint

Alexandre Terrier, Alain Farron, David Ingram, Christoph Anselm Engelhardt

Modelling the shoulder's musculature is challenging given its mechanical and geometric complexity. The use of the ideal fibre model to represent a muscle's line of action cannot always faithfully represent the mechanical effect of each muscle, leading to c ...

Taylor & Francis2015

Comparison of an EMG-based and a stress-based method to predict shoulder muscle forces

Dominique Pioletti, Philippe Müllhaupt, Alexandre Terrier, Alain Farron, David Ingram, Valérie Hélène Emilie Malfroy Camine, Christoph Anselm Engelhardt

The estimation of muscle forces in musculoskeletal shoulder models is still controversial. Two different methods are widely used to solve the indeterminacy of the system: electromyography (EMG)-based methods and stress-based methods. The goal of this work ...

Taylor & Francis2015

Evaluation of the muscular activity duration in shoulders with rotator cuff tear using inertial sensors and electromyography

Kamiar Aminian, Alain Farron, Cyntia Duc

Shoulder disorders, including rotator cuff tears, affect the shoulder function and result in adapted muscle activation. Although these adaptations have been studied in controlled conditions, free-living activities have not been investigated. Based on the k ...

Institute of Physics2014

Measurements of three-dimensional glenoid erosion when planning the prosthetic replacement of osteoarthritic shoulders

Alexandre Terrier, Xabier Larrea, Alain Farron, Julien Ston

The three-dimensional (3D) correction of glenoid erosion is critical to the long-term success of total shoulder replacement (TSR). In order to characterise the 3D morphology of eroded glenoid surfaces, we looked for a set of morphological parameters useful ...

British Editorial Soc Bone Joint Surgery2014

Impact of partial-thickness tears on supraspinatus tendon strain based on a finite element analysis

Dominique Pioletti, Alexandre Terrier, Alain Farron, Christoph Anselm Engelhardt

Taylor & Francis Ltd2014

Effect of a pathological scapular tilt after total shoulder arthroplasty

Dominique Pioletti, Alexandre Terrier, Alain Farron

Total shoulder arthroplasty (TSA) is an accepted and most successfully used treatment for different shoulder pathologies. Different risk factors for the failure of the prosthesis are known. A pathological scapular orientation, observed in elderly people or ...

Taylor & Francis2013

A Minimal Set of Coordinates for Describing Humanoid Shoulder Motion

Alexandre Terrier, Alain Farron, David Ingram, Christoph Anselm Engelhardt

The kinematics of the anatomical shoulder are analysed and modelled as a parallel mechanism similar to a Stewart platform. A new method is proposed to describe the shoulder kinematics with minimal coordinates and solve the indeterminacy. The minimal coordi ...

Ieee2013

Activities of daily living with reverse prostheses: importance of scapular compensation for functional mobility of the shoulder

Dominique Pioletti, Alexandre Terrier, Alain Farron, Patricia Scheuber

Hypothesis: The nonanatomical design of reverse shoulder prostheses induce medial displacement of the center of rotation, impingements and may reduce the mobility of the shoulder. The aim of this study is to test the hypothesis that during activities of da ...

Elsevier2013

Importance of the subscapularis muscle after total shoulder arthroplasty

Dominique Pioletti, Alexandre Terrier, Xabier Larrea, Alain Farron, Valérie Hélène Emilie Malfroy Camine

Background: The rotator cuff muscles are the main stabilizer of the glenohumeral joint. After total shoulder arthroplasty using anterior approaches, a dysfunction of the subscapularis muscle has been reported. In the present paper we tested the hypothesis ...

Elsevier Sci Ltd2013

Distribution of arm velocity and frequency of arm usage during daily activity: objective outcome evaluation after shoulder surgery

Kamiar Aminian, Alain Farron, Cyntia Duc, Brigitte Jolles-Haeberli

In clinical settings, functional evaluation of shoulder movement is primarily based on what the patient thinks he/she is able to do rather than what he/she is actually performing. We proposed a new approach for shoulder assessment based on inertial sensors ...

Elsevier2013

Dynamical biomechanical model of the shoulder for muscle-force estimation

Alexandre Terrier, Alain Farron

A biomechanical model of the human shoulder complex is proposed for quasi-static and dynamic estimation of the muscle forces and joint reaction forces in the glenohumeral joint. The model bases itself on the Garner & Pandy model but adds a dynamic layer. T ...

Ieee2012

Importance of polyethylene thickness in total shoulder arthroplasty: A finite element analysis

Dominique Pioletti, Alexandre Terrier, Alain Farron, Vittoria Brighenti

Background: Articular surfaces reconstruction is essential in total shoulder arthroplasty. Because of the limited glenoid bone support, thin glenoid component could improve anatomical reconstruction, but adverse mechanical effects might appear. Methods: Wi ...

Elsevier2012

New method for detection of shoulder movement during daily activity

Kamiar Aminian, Alain Farron, Cyntia Duc, Brigitte Jolles-Haeberli

2012

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