Intro To Kinesiology And Biomechanics

Question 1

What is biomechanics?

Answer 1

The use of principles of engineering to model movement of a living system.

Question 2

How are fluid mechanics used in biomechanics?

Answer 2

To talk about swimming and the cardiovascular system.

Question 3

How are statics applicable to biomechanics?

Answer 3

Modeling things when still

Question 4

How are kinematics relevant to biomechanics?

Answer 4

Modeling things when moving.

Question 5

What kind of motion is rotation?

Answer 5

Angular

Question 6

What is active motion? What is passive motion?

Answer 6

Active, is moving yourself (muscle activation). Passive, is motion caused by motion created by an outside source (a push or a pull).

Question 7

What is osteokinematics?

Answer 7

Motion of the bone relative to a plane of motion.

Question 8

How many degrees of freedom does the shoulder have?

Answer 8

3 angular DOF, 3 linear DOF = 6 DOF

Question 9

What does translation motion arise from?

Answer 9

Active muscles, laxity

Question 10

In closed chain movement what segment is fixed?

Answer 10

Distal

Question 11

What is arthrokinematics?

Answer 11

Motions that occur between the joint surfaces, especially those that are convex/concave.

Question 12

Give an example of a hinge joint.

Answer 12

Elbow

Question 13

Give an example of a pivot joint.

Answer 13

Radius and Ulna @ Humerus.

Question 14

Give an example of a ball and socket joint.

Answer 14

Femur to pelvis.

Question 15

Define roll.

Answer 15

Multiple points along a rotating articular surface contact multiple points on the other articular surface.

Question 16

Define Slide.

Answer 16

A single point on one articular surface contacts multiple points on another articular surface.

Question 17

Define spin.

Answer 17

A single point on one articular surface rotates on a single point on another articular surface.

Question 18

Why are most joints at least slightly curved?

Answer 18

1. Allows for better fit.
2. Increases surface are of contact.
3. Assists in guiding of movement on smooth surfaces.

Question 19

What is the closed packed joint position?

Answer 19

When you wind up a joint to where the ligaments become taut and the motion between joint surfaces becomes minimal.

Question 20

What is loose packed joint position? Why is this clinically important?

Answer 20

The position where the joint is the most relaxed. Clinically important because when you injure a joint it will automatically go to this position because it’s the least amount of tension in the joint and creates space which you need for inflammation/healing.