Shoulder

Question 1

Shoulder pain

Answer 1

responsible for 16% of all MSK complaints, second to LBP

Question 2

Orientation of clavicle

Answer 2

deviated about 20 degrees posterior to frontal plane

Question 3

Orientation of scapula

Answer 3

deviated about 35 degrees anterior to frontal plane

Question 4

Retroversion of humeral head

Answer 4

about 30 degrees posterior to medial- lateral axis at elbow

Question 5

4 joints within shoulder complex

Answer 5

Sternoclavicular (SC)
Acromioclavicular (AC)
Scapulothoracic (ST)
Glenohumeral (GH)

Question 6

What are the fundamental movements between joint surfaces?

Answer 6

Roll, slide and spin

Question 7

Roll

Answer 7

Multiple points along rotating articular surface contact multiple points on another articular surface

Question 8

Slide

Answer 8

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

Question 9

Spin

Answer 9

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

Question 10

Arthrokinematic Principles of movement

Answer 10

convex on concave surface movement, rolls and slides in opposite directions

concave on convex surface movement, rolls and slides in similar directions