6305: Lippert Chapter 8: Shoulder Gridle

Front 1

Identify the structures that make up the shoulder girdle.

Back 1

articulations btw

scapula & clavicle

Front 2

Identify the structures that make up the shoulder joint.

Back 2

scapula & humerus

Front 3

Identify the structures that make up the shoulder complex.

Back 3

Scapula
Clavicle
Humerus
Sternum
Rib Cage

*(SCHSR)

Front 4

When is the scapula is in upward rotation?

Back 4

when it moves away from the vertebral column, is scapular upward rotation

Front 5

When is the scapula in downward rotation?

Back 5

when it moves toward the vertebral column, is scapular downward rotation

Front 6

Given that the scapula is shaped somewhat like a triangle:

*What direction is the landmark moving if the scapula is rotating upwardly?

Back 6

*when it moves away from the vertebral column, is scapular upward rotation

*when it moves toward the vertebral column, is scapular downward rotation

Front 7

Given that the scapula is shaped somewhat like a triangle:

*What landmark is commonly used to determine the direction the scapula is rotating?

Back 7

inferior angle is point of reference

Front 8

Which shoulder girdle motions are most linear?

Back 8

elevation/depression
&
protraction/retraction

are more linear

Front 9

Which shoulder girdle motions are most angular?

Back 9

upward & downward rotation

are more angular

Front 10

What is the scapulohumeral rhythm?

Back 10

scapulohumeral rhythm is the movement rltp btw shoulder girdle & shoulder joint
___________________
After the first 30 degrees:

1) 4 every 2 degrees of shoulder joint flexion or abduction

2) shoulder girdle rotates up 1 degree

Front 11

What is this called?

After the first 30 degrees:

1) 4 every 2 degrees of shoulder joint flexion or abduction

2) shoulder girdle rotates up 1 degree

Back 11

scapulohumeral rhythm

Front 12

How is the shoulder joint motion affected by the absence of scapulohumeral rhythm?

Back 12

without shoulder girdle movement:

once cannot normally and completely raise the arm above the head

Front 13

The trapezius muscle is usually referred to & described as consisting of three different muscles. The 2 rhomboid muscles (major & minor) are referred to and described as one. From a functional perspective:

*Why is the trapezius muscle separated into 3 muscles?*

Back 13

b/c the 3 different attachments of the trap muscle produce 3 different muscle ctions

Front 14

The trapezius muscle is usually referred to & described as consisting of three different muscles. The 2 rhomboid muscles (major & minor) are referred to and described as one. From a functional perspective:

*Why are the rhomboid muscles described as one muscle?*

Back 14

rhomboid muscles (unlike the traps) have the same line of pull & thus the same muscle action

*there is no functional difference btw the 2*

Front 15

Raising your hand over your head requires the combined action of which three shoulder girdle motions?

Back 15

1) serratus anterior

2) upper trapezius

3) lower trapezius

Front 16

Name and define the biomechanical term used to describe that combined action in raising your hand over your head (which combines 3 shoulder girdle motions).

Back 16

force couple: a situation in which 2 or more muscles pull in different, often opposite, directions to accomplish the same motion

Front 17

Starting at the inferior angle & going clockwise, name the shoulder girdle muscles that attach to the posterior surface of the scapula.

Back 17

rhomboid muscles, the lower and middle trapezius muscles, the levator scapula muscle, & the upper trapezius muscle

Front 18

What is a force couple?

Back 18

force couple: a situation in which 2 or more muscles pull in different, often opposite, directions to accomplish the same motion