NUCCA Biomechanics

1
NUCCA Biomechanics

• By Patrick Lin

2
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)

3
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)

4
What is Resistance?

• Any force that tends to oppose motion. (NUCCA
  Text)
• A force that oppose or slows down another force.

5
Orthogonal Based Chiropractic

• Intersecting or lying at right angles
• Having perpendicular slopes or tangents at the
  point of intersection

6
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.

7
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)
8
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.

9
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.

10
Terminology

• Atlas Plane Line (APL)
• Measure of the horizontal place of C1

11
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)

12
Terminology

• Central Skull Line (CSL)
• The line bisect the skull into equal halves. This
  line pass through the center of gravity of the
  head.

13
Terminology

• C/A
• Condylar Circle
• Axial Circle
• Atlas acts as a lever.

14
NUCCA Misalignment Patterns

• Distribution of 4 Basic Types

Type1 52 Type2 23 Type3 7 Type4 18
15
Type 1 Misalignment Var. 1

• Characteristics
• C1 laterality on the same side of angular
  rotation
• Contralateral acute angle
• Skull is parallel to vertical axis
• C1 is above parallel

Side of Laterality
16
Type 1 Misalignment
Parallel
Atlas Laterality
Angular Rotation
17
Type 1 Correction Vector
E

• Correction Vector above the C/A vector.

F
R
18
Type 1 Misalignment Var. 2

• Characteristics
• C1 laterality on the same side of angular
  rotation
• Contralateral acute angle
• Skull is toward vertical axis
• C1 is above parallel

Side of Laterality
19
Type 1 Correction
E

• Same as Var. 1 but with some head tilt. The
  head is placed differently on the head piece.

F
R
20
Type 2 Misalignment

• Characteristics
• 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

Mainly by Skull
Side of Laterality
21
Type 2 Misalignment

• Angular rotation into the left frontal plane.
• Skull turns into the right frontal plane.

22
Type 2 Correction Vector

• Correction vector below the C/A vector

R
F
E
23
Type 3 Misalignment

• Characteristics
• C1 laterality on the same side of head tilt
• No angular rotation
• C1 remains fairly horizontal
• Laterality produced by head tilt

Directly by Skull
Side of Laterality
24
Type 3 Misalignment

• No angular rotation laterality caused by skull.

25
Type 3 Correction Vector

• The correction vector should be well below the
  C/A vector.
• Head piece placement is very important!

R
F
E
26
Type 4 Misalignment

• Characteristics
• C1 laterality on the same side of angular
  rotation
• Contralateral acute angle
• Skull is tilted away from vertical axis
• C1 is above parallel

Side of Laterality
27
Type 4 Misalignment

• Laterality is caused by 70 angular rotation,
  30 skull tipping

28
Type 4 Correction Vector
E
R

• Correction vector above C/A

R
29
Summary
Acute Angle Cause
Type 1 Contralateral C1 Sideslip
Type 2 Ipsilateral Head tilt
Type 3 - Head tilt
Type 4 Contralateral C1 sideslip / Head tilt
30
Exercises!
31
Exercises
Type 1
32
Exercises
Type 2
33
Exercises
Type 4
34
Exercises
Type 2
35
Exercises
Type 1
36
Exercises
Type 3
37
Exercises
Type 1
38
Exercises
Type 4
39
Exercises
Type 2
40
Dr. Brooks Example

• http//www.chirocorrection.com/brooksspinalcare