Recherche

Afficher tous les résultats pour

Accueil

Personne

Alexandre Terrier

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (111)

Biomechanical consequences of humeral component malpositioning after anatomical total shoulder arthroplasty

Dominique Pioletti, Alexandre Terrier, Alain Farron, Francesco Merlini, Silvio Ramondetti

Hypothesis: We hypothesized that the malpositioning of the humeral component can preclude the long-term success of anatomical total shoulder arthroplasty. The goal of this study was to evaluate the mechanical consequences of superior and inferior malpositi ...

Elsevier2010

Calcium phosphate cement augmentation of cancellous bone screws can compensate for the absence of cortical fixation

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann

An obvious means to improve the fixation of a cancellous bone screw is to augment the surrounding bone with cement. Previous studies have shown that bone augmentation with Calcium Phosphate (CaP) cement significantly improves screw fixation. Nevertheless, ...

Elsevier2010

A musculoskeletal shoulder model based on pseudo-inverse and null-space optimization

Dominique Pioletti, Denis Gillet, Philippe Müllhaupt, Alexandre Terrier, Yvan Michellod, Alain Farron, Martin Aeberhard

The goal of the present work was assess the feasibility of using a pseudo-inverse and null-space optimization approach in the modeling of the shoulder biomechanics. The method was applied to a simplified musculoskeletal shoulder model. The mechanical syste ...

Elsevier2010

Tightening force and torque of nonlocking screws in a reverse shoulder prosthesis

Dominique Pioletti, Alexandre Terrier, Alain Farron, Francesco Merlini, Miguel Gortchacow, Stephanie Kochbeck

Background. Reversed shoulder arthroplasty is an accepted treatment for glenohumeral arthritis associated to rotator cuff deficiency. For most reversed shoulder prostheses, the baseplate of the glenoid component is uncemented and its primary stability is p ...

Elsevier2010

Prediction of bone density around orthopedic implants delivering bisphosphonate

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann

The fixation of an orthopedic implant depends strongly upon its initial stability. Peri-implant bone may resorb shortly after the surgery. This resorbtion is directly followed by new bone formation and implants fixation strengthening, the so-called seconda ...

2009

Targeted mechanical properties for optimal fluid motion inside artificial bone substitutes

Dominique Pioletti, Alexandre Terrier, Lalaonirina Rakotomanana Ravelonarivo, Luc Blecha

The goal of this study was to develop a method that identifies optimal elastic modulus, Poisson’s ratio, porosity and permeability values for mechanically stressed bone substitute. It was hypothesized that porous bone substitute that favors the transport o ...

2009

3D strain map of axially loaded mouse tibia: a numerical analysis validated by experimental measurements

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann, Francesco Merlini, Vincent Forster, Jensen Verhelle, Jean Hocké

A combined experimental/numerical study was performed to calculate the 3D octahedral shear strain map in a mouse tibia loaded axially. This study is motivated by the fact that the bone remodelling analysis, in this in vivo mouse model should be performed a ...

2009

Biomechanical evaluation of porous biodegradable scaffolds for revision knee arthroplasty

Dominique Pioletti, Alexandre Terrier, Marjan Sedighi Gilani, Line Aschwanden, Alireza Roshan Ghias

Tibial bone defect is a critical problem for revision knee arthroplasty. Instead of using metallic spacer or cement, biodegradable scaffolds could be an alternative solution. A numerical model of a revision knee arthroplasty was thus developed to estimate ...

2009

Prediction and optimization of bone density around orthopaedic implants delivering bisphosphonates

Dominique Pioletti, Alexandre Terrier, Brigitte Jolles-Haeberli

2009

Comparison of polyethylene wear in anatomical and reversed shoulder prostheses

Dominique Pioletti, Alexandre Terrier, Alain Farron, Francesco Merlini

Wear of polyethylene is associated with aseptic loosening of orthopaedic implants and has been observed in hip and knee prostheses and anatomical implants for the shoulder. The reversed shoulder prostheses have not been assessed as yet. We investigated the ...

2009

Osteoclastogenesis can be mechanically-induced in the peri-implant bone

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann

Total joint replacements are highly successful in relieving pain and restoring movement of damaged joints. However, the lifespan of the implants is limited. The implant’s long-term stability depends largely on the preservation of periprosthetic bone. Debri ...

2009

Baseplate compression screw force of a reversed shoulder prosthesis

Dominique Pioletti, Alexandre Terrier, Francesco Merlini, Stephanie Kochbeck

2009

3D strain map of axially loaded mouse tibia: a numerical analysis validated by experimental measurements

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann, Francesco Merlini, Vincent Forster, Jean Hocké

A combined experimental/numerical study was performed to calculate the zone of highest strain in a rat tibia loaded axially. This study is motivated by the fact that the bone remodeling analysis in this in vivo rat model should be performed at the zone of ...

2009

Total shoulder arthroplasty: Downward inclination of the glenoid component to balance supraspinatus deficiency

Dominique Pioletti, Alexandre Terrier, Alain Farron, Francesco Merlini

Hypothesis: Supraspinatus deficiency associated with total shoulder arthroplasty (TSA) provokes eccentric loading and may induce loosening of the glenoid component. A downward inclination of the glenoid component has been proposed to balance supraspinatus ...

2009

Dynamical biomechanical model of the shoulder: null space based optimization of the overactuated system

Dominique Pioletti, Denis Gillet, Philippe Müllhaupt, Alexandre Terrier, Yvan Michellod, Martin Aeberhard

A new dynamical model of the shoulder has been developed. It consists of eleven muscles. The glenohumeral joint, modeled as a spherical joint, allows three rotations and blocks the translations. Muscle wrapping around a spherical humeral head is calculated ...

2009

Fluid flow in peri-implanthealing soft tissue

Dominique Pioletti, Alexandre Terrier, Miguel Gortchacow

Gordon and Breach Pub2008

Implants delivering bisphosphonate locally increase periprosthetic bone density in an osteoporotic sheep model. A pilot study

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann

It is a clinical challenge to obtain a sufficient orthopedic implant fixation in weak osteoporotic bone. When the primary implant fixation is poor, micromotions occur at the bone-implant interface, activating osteoclasts, which leads to implant loosening. ...

2008

Does reversed prostheses increase humeral stress?

Alexandre Terrier, Alain Farron, Francesco Merlini

Gordon and Breach Pub.2008

Simulated joint and muscle forces in reversed and anatomic shoulder prostheses

Adrian Reist, Alexandre Terrier, Alain Farron, Francesco Merlini

Reversed shoulder prostheses are increasingly being used for the treatment of glenohumeral arthropathy associated with a deficient rotator cuff. These non-anatomical implants attempt to balance the joint forces by means of a semi-constrained articular surf ...

2008

Microstimulations at the bone implant interface upregulate osteoclast activation pathway

Dominique Pioletti, Alexandre Terrier, Vincent Stadelmann

Peri-implant bone resorption after total joint arthroplasty is a key parameter in aseptic loosening. Implant wear debris and biomechanical aspects have both been demonstrated to be part of the bone resorption process. However, neither of these two paramete ...

2008

Page 5 sur 6