Publications de Arash Arami | EPFL Graph Search

A Robotic Glenohumeral Simulator for Investigating Prosthetic Implant Subluxation

Kamiar Aminian, Alexandre Terrier, Alain Farron, Matteo Mancuso, Arash Arami

Total shoulder arthroplasty (TSA) is an effective treatment for glenohumeral (GH) osteoarthritis. However, it still suffers from a substantial rate of mechanical failure, which may be related to cyclic off-center loading of the humeral head on the glenoid. ...

2019

Knee Implant Loosening Detection: A Vibration Analysis Investigation

Kamiar Aminian, Hossein Rouhani, Arash Arami

Knee implant loosening is mainly caused by the weakness of the prosthesis-bone interface and is the main reason for surgical revisions. However, pre-operative diagnosis is difficult due to lack of accurate tests. In this study, we developed a vibration-bas ...

Springer Verlag2018

An Accurate Wearable Foot Clearance Estimation System: towards a real time measurement system

Kamiar Aminian, Arash Arami

This work presents an accurate, robust, wearable measurement system for foot clearance estimation along with algorithms to provide a real-time estimate of foot height and orientation. Different configurations of infrared distance meter sensors were used, b ...

Institute of Electrical and Electronics Engineers2017

Effects of a neuromuscular controller on a powered ankle exoskeleton during human walking

Auke Ijspeert, Florin Dzeladini, Etienne Burdet, Arash Arami, Daniel Renjewski, Amy Roning Wu

Wearable devices to assist abnormal gaits require controllers that interact with the user in an intuitive and unobtrusive manner. To design such a controller, we investigated a bio-inspired walking controller for orthoses and prostheses. We present (i) a S ...

Ieee2016

Smart Knee Prosthesis for Orthopedic Surgery: the implantable and wearable Measurement System

Kamiar Aminian, Philippe Renaud, David Forchelet, Arash Arami

Recent advances in remote powering and telemetry permitted the use of sensors inside body. A few studies have been already done on smart knee prostheses, but all focused on monitoring the in-vivo contact forces and moments. A smart design, compatible with ...

2015

Improving activity recognition using a wearable barometric pressure sensor in mobility-impaired stroke patients

Kamiar Aminian, Anisoara Ionescu, Arash Arami, Fabien Massé

Background Stroke survivors often suffer from mobility deficits. Current clinical evaluation methods, including questionnaires and motor function tests, cannot provide an objective measure of the patients’ mobility in daily life. Physical activity performa ...

BioMed Central2015

Locally Linear Neuro-Fuzzy Estimate of the Prosthetic Knee Angle and its Validation in a Robotic Simulator

Kamiar Aminian, Natacha Vida Martins, Arash Arami

Here we present a low-power magnetic measurement system based on only two Hall-effect elements and a permanent magnet integrated into a smart knee prosthesis to accurately measure knee flexion-extension. The smart prosthesis was tested in a robotic knee si ...

Institute of Electrical and Electronics Engineers2015

Smart instrumentation for determination of ligament stiffness and ligament balance in total knee arthroplasty

Kamiar Aminian, Philippe Renaud, Arnaud Bertsch, Brigitte Jolles-Haeberli, Arash Arami, Willyan Hasenkamp Carreira

Ligament balance is an important and subjective task performed during total knee arthroplasty (TKA) procedure. For this reason, it is desirable to develop instruments to quantitatively assess the soft-tissue balance since excessive imbalance can accelerate ...

Elsevier Sci Ltd2014

Enclosed Electronic System for Force Measurements in Knee Implants

Kamiar Aminian, Philippe Renaud, Arnaud Bertsch, Peter Ryser, Eric Meurville, David Forchelet, Arash Arami, Matteo Simoncini

Total knee arthroplasty is a widely performed surgical technique. Soft tissue force balancing during the operation relies strongly on the experience of the surgeon in equilibrating tension in the collateral ligaments. Little information on the forces in th ...

Mdpi Ag2014

Kinematics Estimation and Loosening Detection in Smart Knee Prostheses

Arash Arami

EPFL2014

Implantable and wearable measurement system for smart knee prosthesis

Kamiar Aminian, Philippe Renaud, David Forchelet, Arash Arami

In this work we present the implantable and wearable measurement system developed for smart knee prostheses monitoring. The kinematic measurement system contains three anisotropic magnetoresistive sensors embedded into the polyethylene part of the prosthes ...

IEEE2014

Sagittal plane blocade in patients with Functional Hallux Limitus:a multisegment model analysis of the Flexor Hallucis Longus endoscopic tenolysis

Kamiar Aminian, Hossein Rouhani, Arash Arami

Functional Hallux Limitus (FHL) is a relatively unknown clinical entity in which dorsal flexion of the first metatarsophalangeal joint is restricted during final stance phase, derailing the three mechanisms of foot stabilization 1. The close packing of the ...

2014

Patellar kinematics after knee arthroplasty: experimental validation of a numerical model

Dominique Pioletti, Kamiar Aminian, Alexandre Terrier, Brigitte Jolles-Haeberli, Arash Arami, Adeliya Latypova

Subject-specific modelling of Total Knee Arthroplasty could be an efficient method to preoperatively evaluate surgical options. In particular, the question of the necessity of patellar resurfacing is still a debatable issue. The aim of this work was to val ...

2014

Smart knee prosthesis kinematics estimation and validation in a robotic knee simulator

Kamiar Aminian, Arash Arami

In this work we present the smart knee prosthesis designed for in-vivo kinematics measurement and its validation in two knee simulators, i.e. a robotic knee simulator to provide realistic condition, and a manual simulator with more degrees of freedom. The ...

2014

Reference-Free Automated Magnetic Sensor Calibration for Angle Estimation in Smart Knee Prostheses

Kamiar Aminian, Arash Arami, Julien David Rechenmann

In this work, we present a method for automated calibration of an implanted anisotropic magnetoresistive (AMR) sensor for measuring the internal-external rotation (IE) in a prosthetic knee without using any reference measurement. The measurement system con ...

Institute of Electrical and Electronics Engineers2014

Design and test of a MEMS strain-sensing device for monitoring artificial knee implants

Kamiar Aminian, Alexandre Terrier, Philippe Renaud, Arnaud Bertsch, Arash Arami, Willyan Hasenkamp Carreira

This paper describes the development of a polyimide-based MEMS strain-sensing device. Finite element analysis was used to investigate an artificial knee implant and assist on device design and to optimize sensing characteristics. The sensing element of the ...

Springer2013

A Hidden Markov Model of the Breaststroke Swimming Temporal Phases Using Wearable Inertial Measurement Units

Kamiar Aminian, Farzin Dadashi, Arash Arami, Grégoire Millet, Florent Crettenand

The recent advances in wearable inertial sensors opened a new horizon for pervasive measurement of human locomotion even in aquatic environment. In this paper we proposed an automatic approach of detecting the key temporal events of breaststroke swimming a ...

Ieee2013

Analysis of the effect of Ankle Arthodesis and Total Ankle Replacement on Plantar Pressure and Gait Symmetry

Kamiar Aminian, Hossein Rouhani, Arash Arami, Xavier Crevoisier, Swati Chopra

2013

Accurate angle estimation in smart knee prostheses via magnetic implantable and skin-mounted sensors

Kamiar Aminian, Arnaud Barré, Arash Arami

In this work we investigated how to measure concurrently flexion-extension and internal-external rotations in a smart knee prosthesis. A configuration of magnetic sensors and magnets were designed and embedded in knee prostheses in which each sensor measur ...

2013

Physical activity recognition via minimal in-shoes force sensor configuration

Kamiar Aminian, Arash Arami, Fabien Massé, Christopher Moufawad El Achkar

We propose a new minimal wearable system and a classifier for physical activity recognition. The configuration is solely based on two force sensors placed anteriorly and posteriorly under the feet. To find the optimal sensor configuration, we estimated the ...

Ieee2013