Transcript NUCCA Biomechanics By: Patrick Lin

NUCCA Biomechanics
By: Patrick Lin
What is Biomechanics
The study of body movements and of the
forces acting on the musculoskeletal
system
 The application of mechanical laws and
principles to the interpretation and
analysis of the subluxation and its
correction (NUCCA Text)

What is Force?
A vector quantity tending to produce an
acceleration of an object in the direction
of its application. Capacity to do work or
cause physical change.
 A Push or a Pull.
 A vector quantity processing size and
direction (NUCCA Text)

What is Resistance?
Any force that tends to oppose motion.
(NUCCA Text)
 A force that oppose or slows down
another force.

Orthogonal Based Chiropractic
Intersecting or lying at right angles
 Having perpendicular slopes or tangents
at the point of intersection

Definition: Orthogonal Axis

If two symmetrical planes intersect at
right angles, the line in which they cut is
called an axis of orthogonal symmetry.
The central axis or origin of the
coordinate system.
Premise
Since each of the orientation
planes bisect the body, it
follows that each plane must
pass through the center of
gravity. Hence, the center
of gravity may be defined as
the vertical line at which the
two vertical planes intersect
each other. (NUCCA Text)
Terminology: Laterality

A rotational, abnormal movement of C1
about the condyles of occiput and about
the sagital axis of motion. Rotation is
angular motion about an axis of motion.
Terminology: Angular Rotation

The abnormal excursion of the cervical
spine and skull as a unit about the vertical
axis of the body, thereby producing
gravitational stresses resulting in rotations
of the vertebrae and traction of the
contents of the spinal canal & nerve
roots.
Terminology

Atlas Plane Line
(APL)

Measure of the
horizontal place of
C1
Terminology

Angular Rotation
(Lower Angle)

The line connected by
center of the neural
canal of the C2 and
lowest visible vertebra
(Usually C7 or T1)
Terminology

Central Skull Line
(CSL)

The line bisect the
skull into equal
halves. This line
pass through the
center of gravity of
the head.
Terminology
• C/A
• Condylar Circle
• Axial Circle
•Atlas acts as a lever.
NUCCA Misalignment Patterns

Distribution of 4 Basic Types
Type1
Type2
Type3
Type4
Type 4
Type 3
Type 1
Type 2
52%
23%
7%
18%
Type 1 Misalignment Var. 1




Side of
Laterality
Characteristics
C1 laterality on the same
side of angular rotation
Contralateral acute angle
Skull is parallel to vertical
axis
C1 is above parallel
Type 1 Misalignment
Parallel
Atlas Laterality
Angular Rotation
Type 1 Correction Vector
E
• Correction Vector
above the C/A vector.
F
R
Type 1 Misalignment Var. 2




Side of
Laterality
Characteristics
C1 laterality on the
same side of angular
rotation
Contralateral acute
angle
Skull is toward vertical
axis
C1 is above parallel
Type 1 Correction
E
• Same as Var. 1 but
with some head tilt.
The head is placed
differently on the
head piece.
F
R
Type 2 Misalignment
Characteristics




Mainly
by
Skull
Side of
Laterality

C1 laterality on the
opposite side of angular
rotation
Ipsilateral acute angle
Skull is tipped toward
vertical axis
C1 remains fairly
horizontal
Laterality produced
mainly by skull
Type 2 Misalignment
• Angular rotation into
the left frontal plane.
• Skull turns into the
right frontal plane.
Type 2 Correction Vector
• Correction vector
below the C/A vector
Type 3 Misalignment




Directly
by
Skull
Side of
Laterality
Characteristics
C1 laterality on the
same side of head tilt
No angular rotation
C1 remains fairly
horizontal
Laterality produced by
head tilt
Type 3 Misalignment
• No angular rotation
& laterality caused by
skull.
Type 3 Correction Vector
• The correction
vector should be well
below the C/A vector.
• Head piece
placement is very
important!
Type 4 Misalignment




Side of
Laterality
Characteristics
C1 laterality on the same
side of angular rotation
Contralateral acute angle
Skull is tilted away from
vertical axis
C1 is above parallel
Type 4 Misalignment
• Laterality is caused by
70% angular rotation,
30% skull tipping
Type 4 Correction Vector
• Correction vector
above C/A
Summary
Acute Angle
Cause
Type 1
Contralateral
C1 Sideslip
Type 2
Ipsilateral
Head tilt
Type 3
Type 4
Contralateral
Head tilt
C1 sideslip /
Head tilt
Exercises
Type 1
Exercises
Type 2
Exercises
Type 4
Exercises
Type 2
Exercises
Type 1
Exercises
Type 3
Exercises
Type 1
Exercises
Type 4
Exercises
Type 2
Dr. Brooks Example

http://www.chirocorrection.com/brookssp
inalcare