Divides: Right and Left

Sagittal Plane

Divides: Anterior-Posterior

Frontal (Corona) Plane

Divides: Superior-Posterior

Transverse Plane

Cartesian coordinate system is aka (2)

Orthogonal or Rectangular coordinate system

Orthogonal coordinate system means what?

Its coordinating surfaces meet at right angles to another.

What are the 3 axes of motion?

x, y, and z

How are the 3 axes of motion formed?

By the junction of 2 planes

The movement in a STRAIGHT LINE ALONG and axis.

translation

Movement occurs AROUND and axis.

rotation

What is the most common motion in the body?

Coupled movment

Coupled movement aka?

Curvilinear motion

Coupled motion combines what two movements?

Rotation and translation

How many “degrees of freedom” are there?

6

The potential exists for each joint to exhibit _______ movements and ________ rotational movements.

3 translational

3 rotational

The x-axis is the junction of what two planes?

Coronal and transverse

The Y-axis is the junction of what two planes?

Coronal and sagittal

The Z-axis is the junction of what two planes?

Sagittal and transverse

Always horizontal side to side - axis?

x-axis

Always vertical - axis?

Y-axis

Perpendicular to X, front to back - axis?

Z-axis

X-axis translation: + is towards _____, - is towards ______.

Left,

right

Y-axis translation: + is towards ____. = towards ____.

Superior

Inferior

Z-axis translation: + toward _____. - toward _____.

Anterior

posterior

Lateral glide right to left is what kind of translation?

Positive X translation

Lateral glide left to right is what kind of translation?

Negative X translation

Distraction is what motion? What kind of translation?

Inferior to superior.

Positive Y translation.

Compression is what motion? What kind of translation?

Superior to inferior.

Negative Y translation.

P-A glide is aka?

anterolisthesis

A-P glide is aka?

retrolisthesis

Anterolisthesis is what kind of translation?

Positive Z translation

Retrolisthesis is what kind of translation?

Negative Z translation

3-D Cartesian coordinate system Rotation aka?

“right handed system”

Flexion of spine is what kind of rotation?

Positive theta X

Extension of spine is what kind of rotation?

Negative theta X

Left axial rotation is what kind of rotation?

Positive theta Y

Right axial rotation is what kind of rotation?

Negative theta Y

Right lateral flexion is what kind of rotation?

Positive theta Z

Left lateral flexion is what kind of rotation?

Negative theta Z

Two motions coupled at once is called what?

Coupled motion

What are the coupled motions of vertebral motion?

Anterior translation (positive Z axis) Flexion (positive theta X)