Biomechanics is the scientific study of the mechanics of living beings, specifically focusing on the musculoskeletal system. It is the application of mechanical principles to movement of the human body. Biomechanics can be divided into kinematic (descriptive analysis of motion) and kinetic (causal analysis considering forces) categories. The key components of the musculoskeletal system that biomechanics analyzes are bones, joints, and muscles.

1. KKU_Biomech_Intro
Introduction to
Dr / Shimaa Essa
Lecturer of physical therapy , faculty of community,
King Khalid university

2. Upon successful completion of this lesson you
would be able to:
1- Define the science of biomechanics.
2- Identify different Classifications of
biomechanics.
3- Identify components of the musclosekeltal
system.

3. • Definition:
- Kinesis = means movement or to move.
- Logos = means the science or to study.
• Kinesiology can be defined as the scientific study of
human motion.
• Kinesiology means the science of movement including
active and passive structures.
• Kinesiology is the science which investigates anatomy
and organic processes in reference to human motion.

4. • kinesiologists:
Those who study movements, They can no longer limit
their scope to the mechanical analysis of movement.
They must consider increasingly the meaning and
significance of musculoskeletal movement.
• Kinesiology can be divided into 2 special study
fields:
1- Anatomical kinesiology.
2- Mechanical kinesiology = Biomechanics
The term mechanical kinesiology has been
replaced lately by Biomechanics.

5. Definition:
• Bios = life.
• Mechanics = study the effect of forces on bodies
during static and dynamic situations.
• Mechanics = It is the branch of physics which deals
with the interrelations between force, matter and
motion.
Biomechanics is the application of mechanical
principles to living structures either animals or
human being at rest and during movement.

7. Mechanical kinesiology
Study of mechanical factors affecting
human body at rest or in motion
Kinematics Kinetics
Descriptive analysis of mechanical
Casual analysis of motion with
components of a motion without
consideration of interacting
consideration of balanced and
forces that causes motion
unbalanced forces causing motion
Qualitative Quantitative Static Dynamic
analysis analysis
Study of body in Study of body in
Naming and Counting and
a state of state of motion
evaluating measuring of
equilibrium change caused
movement movement
caused by by unbalanced
components. components.
balanced forces forces
(Non numerical) (Numerical)

8. Biomechanics deals with the
locomotion system which is the
musculoskeletal system.

9. The combination of bones, joints, muscles and related
connective tissues are known as the musculoskeletal system.
Joints:
Where the bones come Bones:
together (and with the The framework of the body is
power of the muscles) give the skeleton (Bones). Bones
a variety of range of of the skeletal system consist
motion (R.O.M). Joints, of 206 bones.
(joint, classifications)
consist of 360 joints.
Muscles:
The body's motive power.
(muscular system) consist of
640 muscles.

10. 1- Biomechanics is the application of mechanical principles
to living structures either animals or human being at rest and
during movement.
2- Biomechanics is Classified into Kinetic (analysis of motion)
and Kinematic (description of motion).
3- Biomechanics deals with the locomotion system which is
the musculoskeletal system (Bones, Joints and Muscles).