A Finite Element Approach to Predict the Post-treatment Evolution of an Orthopedically Treated Vertebral Body Fracture (original) (raw)

Computerized Assessment of the Functionality of the Human Upper Limb: New Approaches

International Journal of Modeling and Optimization, 2017

Musculoskeletal disorders are the most frequent health problem of active population in industrialized countries, with considerable costs and impact on quality of life. Getting a precise and fast diagnosis generates a properly applied treatment with favorable effects. Mobility of the upper limb can be determined in medical practice through a large number of devices. Taking into account their disadvantages, two simple systems were proposed from a constructive point of view with a low but good efficiency. In order to determine which of the two projected systems is most effective, a comparison was made between the chosen systems and the upper limb motion analysis system, namely Vicon Mx. One of the systems has been highlighted in relation to the other, with a lower measurement error due to the IMU sensors that the system has in its composition. The equipment is easy to use for the medical environment, it is comfortable and fast for the patient, so this proposed system is the one that would be needed in this field, its realization contributing to the technological advance of the current systems.

Finite Element Modelling and Simulation for Lower Limb of Human Bone: A Review

2020

Most orthopaedic cases that involved with bone fracture are normally treated with medical implants. To be noticed that some precautions in terms of biomechanical and biomaterial properties are necessary for a successful post-surgery process. The biomechanical evaluation of implants could be carried out using computing and engineering technologies. However, in the computer simulation, some assumptions are needed as the limitations on computer resources and data input. This review focuses on the current method of developing the finite element model for patients with specific values of material properties for lower limb part such as hip, knee and ankle joint. Previous literature was reviewed from which keywords and search engines were identified. In this review, inclusion and exclusion criteria were used to limit the literature search. We reviewed the state-of-the-art in this area and provide recommendations for future research. In conclusion, the previous published reports illustrated...

New methods for the simulation with finite element of the human elbow

2010

In this paper one presents on virtual models of bones the cinematic and dynamic analysis of the human elbow with the analysis of finite elements. The model is made in Solidworks then is imported in Visual Nastran for the analysis. Then we study the cinematic and dynamic simulation of the bio-system elbow articulation for the movement of deflection-extension with the presentation of different graphics of the ulna. It is studied also for the humerus bone the tension and stress between intervals of 0.1 0, 2 seconds. The results showed that the virtual bone has a great capability to predict the moments of fracture apparition with application to future researches. Keywords— Bio-system fracture, flexion-extension, human elbow, tension. I. THE METHOD DESCRIPTION To obtain the bone cross sections were used a PHILIPS AURA CT tomography installed in the Emergency Hospital from Craiova (Figure 1). Fig.1 The PHILIPS AURA CT tomography Manuscript received April 10, 2010. R. Lungu is with the Uni...

Finite element simulation . Applications in Orthopaedic Surgery and Traumatology

2012

Research in different fields concerning Orthopaedic Surgery and Traumatology requires a methodology that allows, at the same time, a more economic approach and the possibility of reproducing in a easy way different situations. Such a method could be used as a guide for research on biomechanics of the locomotor system, both in healthy and pathologic conditions, along with the study of performance of different prostheses and implants. To that effect, the use of simulation models, introduced in the field of Bioengineering in recent years, can undoubtedly mean an essential tool to assess the best clinical option, provided that it will be accurate enough in the analysis of specific physiological conditions concerning a certain pathology. The Finite Element Method (FEM) was originally developed for solving structural analysis problems relating to Mechanics, Civil and Aeronautical Engineering. The paternity of this method is attributed to Turner, who published his first, historic, job in 1...

Development of an economic wireless human motion analysis device for quantitative assessment of human body joint

Measurement, 2018

In recent years, the study of human body dynamics has been attracting a significant amount of attention. Currently there are many camera or active sensor based motion analysis systems available on the market. They have been extensively adopted and used by the film and animation or entertainment industries such as film and video game producers. More recently their potential in studying human dynamics / motion for medical purposes has been realised to the extent that they are now used to study full body human biomechanics in the form of gait analysis systems. Most orthopaedic surgeries are usually about joint repair or implants. According health line, revision surgery is usually due to infection, continued pain, joint stiffness, wear, instability, loosening. Apart from infection, the rest can be linked to the operation itself. Currently, surgical planning and placing implants is performed in a subjective manner, relying on the surgeon's experience and instinct, current systems to help the surgeon to place implant are also bulky, expensive, slow and not user friendly. The aim of this project is to develop an economic and portable motion assessment system which involves a wireless inertial measurement unit (IMU) dedicated to study and assess body joints. Through the data collected from the IMU, the system is capable real time measurement of relative position and orientation of the human joint. Several tests were conducted to validate the data extracted from gyroscope and accelerometer of the IMU. The joint motion results analysed using the device was compared with the results analysed using commercial video motion analysis software and it shows good correlation. It is found that the gyroscope of the IMU under DMP sensor fusion algorithm and calibration capability is able to give the angular velocity with less than 5% error. This has led to a more accurate orientation data which gives 7% error in average bending angle.

The application of the finite element method in the biomechanics of the human upper limb and of some prosthetic components

Wseas Transactions on Computers, 2009

The inclusion of analytical and experimental models in biomechanical studies leads to the obtainment of important data for the research concerning the human skeleton, its traumas and diseases. The paper showcases a number of results regarding the static and dynamic analysis of some biomechanical components by using the finite element method (FEM). Models, representing parts of the human upper limb, have been studied using static trials. Considering the fact that we wish to emphasize the way in which such analyses can be done with a finite element method, we shall present only a few relevant examples for which we have experimental data, namely: analysis of the compression, bending and stretching of the humerus and bending of the radius and the ulna.

Aspects regarding the validation of mechanical solutions through the finite element method for the human upper limb

2009

The work presents a few results regarding the static and dynamic analysis of some biomechanical components through the finite element method. Models, representing parts of the human upper limb, have been studied using static trials. Another study was carried out in order to determine the dynamic behavior of the model for total arm prosthesis. The models have been created with the aid of the SolidWorks program and the trials with the HyperMesh program. Considering the fact that we wish to emphasize the way in which such analyses can be done with a finite element method, from meshing to the obtaining of results, as well as their comparison to the results obtained experimentally, we shall present only a few relevant examples for such studies.

Computer Aided Modeling and Finite Element Analysis of Human Elbow

International Journal of Biomedical and Clinical Engineering, 2016

Finite element modeling (FEM) plays a significant role in the design of various devices in the engineering field of automotive, aerospace, defense etc. In the recent past, FEM is assisting engineers and healthcare professional in analyzing and designing various medical devices with advanced functionality. Computer aided engineering can predict failure circumstances, which can be avoided for the health and well-being of people. In this research work, computer aided engineering analysis of human elbow is presented beginning with modeling of human elbow from medical image data, and predicting the stresses in elbow during carrying heavy loads. The analysis is performed by using finite element method. The results predict the stress level and displacement in the human bone during heavy weight lifting. Thus, it can be used to predict the safe load that a particular person can carry without bone injury. The present analysis focused on a particular model of bone for a particular individual. ...

The New Computational Analysis Tool for Upper Limb Movement in Physiotherapy Biomedical Applications

The present project aims at developing an interface capable of capturing, analyzing and stimulating movements of persons who have some motor dysfunction in the upper arms due to accidents or congenital disabilities, i.e., those who need rehabilitation treatment. In this paper, we have used accelerome-ters with the objective of capturing the movements carried out by the user. These movements are captured in the form of analogical signals represented by voltage variation. Hence, it requires the use of a microcontroller to handle the data. This microcontroller controls how the data will be sent to the computer, and also, it makes possible the transformation of the signals into the digital format, which facilitates the processing steps and the computer analysis. When the obtained data are sent to a computer, their numerical transformation step starts off with speed and it is plotted on the user screen in an animated form representing the user's movement. The user receives an instant...