(Disambiguation). Page of One of the First Works Of

Biomechanics

For other uses, see Biomechanical (disambiguation).

Page of one of the first works of Biomechanics (De Motu Animalium of Giovanni Alfonso Borelli) in the 17th century

Biomechanics is the study of the structure and function of biological systems such as humans, animals, plants, organs, fungi, and cells[1] by means of the methods of mechanics.[2]

Word history Edit

The word "biomechanics" (1899) and the related "biomechanical" (1856) come from the Ancient Greek βίος bios "life" and μηχανική , m ē chanik ē "mechanics", to refer to the study of the mechanical principles of living organisms, particularly their movement and structure.[3]

Method Edit

Biomechanics is closely related to engineering, because it often uses traditional engineering sciences to analyze biological systems. Some simple applications of Newtonian mechanics and/or materials sciences can supply correct approximations to the mechanics of many biological systems. Applied mechanics, most notably mechanical engineering disciplines such as continuum mechanics, mechanism analysis, structural analysis, kinematics and dynamics play prominent roles in the study of biomechanics.

Usually biological systems are much more complex than manbuilt systems. Numerical methods are hence applied in almost every biomechanical study. Research is done in an iterative process of hypothesis and verification, including several steps of modeling, computer simulation and experimental measurements. Subfields Edit

Applied subfields of biomechanics include:

Soft body dynamics

Kinesiology (kinetics + physiology)

Animal locomotion & Gait analysis

Musculoskeletal & orthopedic biomechanics

Cardiovascular biomechanics

Ergonomy

Human factors engineering & occupational biomechanics

Implant (medicine), Orthotics & Prosthesis

Rehabilitation

Sports biomechanics

Allometry

Injury biomechanics

Biotribology

Biofluid mechanics

Comparative biomechanics

Computational biomechanics

Sports biomechanics Edit

Main article: Sports biomechanics

In sports biomechanics, the laws of mechanics are applied to human movement in order to gain a greater understanding of athletic performance and to reduce sport injuries as well. It focuses on the application of the scientific principles of mechanical physics to understand movements of action of human bodies and sports implements such as cricket bat, hockey stick and javelin etc. Elements of mechanical engineering (e.g., strain gauges), electrical engineering (e.g., digital filtering), computer science (e.g., numerical methods), gait analysis (e.g., force platforms), and clinical neurophysiology (e.g., surface EMG) are common methods used in sports biomechanics.[4]

Biomechanics in sports can be stated as the muscular, joint and skeletal actions of the body during the execution of a given task, skill and/or technique. Proper understanding of biomechanics relating to sports skill has the greatest implications on: sport's performance, rehabilitation and injury prevention, along with sport mastery. As noted by Doctor Michael Yessis, one could say that best athlete is the one that executes his or her skill the best.[5]

Continuum biomechanicsEdit

The mechanical analysis of biomaterials and biofluids is usually carried forth with the concepts of continuum mechanics. This assumption breaks down when the length scales of interest approach the order of the micro structural details of the material. One of the most remarkable characteristic of biomaterials is their hierarchical structure. In other words, the mechanical characteristics of these materials rely on physical phenomena occurring in multiple levels, from the molecular all the way up to the tissue and organ levels.

Biomaterials are classified in two groups, hard and soft tissues. Mechanical deformation of hard tissues (like wood, shell and bone) may be analysed with the theory of linear elasticity. On the other hand, soft tissues (like skin, tendon, muscle and cartilage) usually undergo large deformations and thus their analysis rely on the finite strain theory and computer simulations. The interest in continuum biomechanics is spurred by the need for realism in the development of medical simulation.[6]:568

Biofluid mechanics Edit

Red blood cells