Lecture 4: Arthrokinematics

Question 1

Osteokinematics or Arthrokinematics?
A. Gross movements of bone
B. Motion that occurs between the articular surfaces of joints

Answer 1

A. osteokinematics

B. arthrokinematics

Question 2

Concave or convex?
A. Hollowed or rounded inward
B. Curved or rounded outward

Answer 2

A. Concave

B. Convex

Question 3

T or F? Convex/concave relationship in joints…
A. Increases contact surface area of joint
B. Increases joint stability and guides motion of bones
C. Does not allow for rolling and sliding at the same time
D. Increases dissipation of contact forces

Answer 3

A. True
B. True
C. False
D. True

Question 4

Roll Slide Spin Distraction or Compression?
A. Joint surfaces are pulled apart
B. Multiple pts of one surface contact multiple pts on another surface
C. Single pt on one surface rotates on single pt of another surface

Answer 4

A. Distraction
B. Roll
C. Spin

Question 5

Roll Slide Spin Distraction or Compression?
A. Vertebral facets slide apart along longitudinal axis
B. Femur condyle on tibial plateau
C. Pro-/supination of radial head at humeroradial joint
D. Carpal bones and their facet surfaces

Answer 5

A. Distraction
B. Roll
C. Spin
D. Slide

Question 6

Roll Slide Spin Distraction or Compression?
A. Decrease in the space between 2 joint surfaces
B. Single pt on one surface contacts multiple points on another surface
C. Used to stretch joint capsule and mobilize a joint
D. Stabilizes a joint

Answer 6

A. Compression
B. Slide
C. Distraction
D. Compression

Question 7

Fill in the blanks for Convex-on-concave motion:

When _____ side of a joint is stabilized (anchored), the ____ surface glides (slides) in the ___ direction as it rolls.

Answer 7

Convex on concave = when concave is anchored, convex glides in the opposite direction as it rolls

Question 8

Fill in the blanks for Concave on convex motion:

When _____ side of a joint is stabilized (anchored), the ____ surface glides (slides) in the ___ direction as it rolls.

Answer 8

Concave on convex = when convex is anchored, concave glides in the same direction as it rolls

Question 9

Clinical significance of convex-concave rules?

Answer 9

Serve as basis for joint mobilization techniques. Treatment combines physiologic (osteokinematic) and accessory (arthrokinematic) movements.
Follow rules to restore normal joint play to increase pain-free joint range of motion.