Midterm Part 5 Arthrokinematics

Question 1

Arthrokinematics definition

Answer 1

motion that occurs between the articular surfaces of joints

Question 2

Convex

Answer 2

curved, rounded outward

Question 3

Concave

Answer 3

CAVE!!!

Question 4

convex-concave relationship

Answer 4

• increases contact surface area of joint
• contributes to increased joint stability
• increases dissipation of contact forces
• helps guide motion between the bones

Question 5

What are the 5 movements between joint surfaces?

Answer 5

roll, slide, spin, distraction & longitudinal traction, compression

Question 6

Roll

Answer 6

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

ex. femoral condyles rolling on tibial plateau

Question 7

Roll usually occurs in combo with…

Answer 7

sliding or spinning

Question 8

Roll occurs on ____ surfaces.

Answer 8

incongruent (unequal)

Question 9

Slide

Answer 9

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

ex. carpal bones sliding in their facet surfaces

Question 10

Glide

Answer 10

when a mobilization technique is applied to produce a slide in the joint

Question 11

The more _____ the surfaces are, the more sliding there is.

Answer 11

congruent

Question 12

Distraction and Longitudinal Traction

Answer 12

joint surfaces are pulled apart. use to stretch a joint capsule and mobilize a joint.

Question 13

Compression

Answer 13

decrease in space between two joint surfaces. adds stability.

normal response to muscle contraction.

Question 14

Convex-on-Concave and Concave-on-Convex Rule

How does these rules help?

Answer 14

describes the relationship of rolling and sliding motion within a joint when one joint surface is convex and the other surface is concave.

These rules serve as a basis for joint mobilization techniques (restore natural arthrokinematic motions)

vs. osteokinematics - physiological movements - movements done voluntarily

Question 15

convex-on-concave motion

Answer 15

concave side stabilized, convex side glides in opposite direction as it rolls

Question 16

concave-on-convex motion

Answer 16

when convex side is stabilized, concave glides in same direction as it rolls.

Question 17

Physiological Movements

Answer 17

movement of bones done voluntarily - osteokinematics

Question 18

Accessory Movements

Answer 18

arthrokinematic movements within the joint and surrounding tissues that are necessary for normal joint ROM, but cannot be performed voluntarily. (if you have tightness in a ligament or joint capsule)

Question 19

Joint Play

Answer 19

motions that occur within the joint but only as a response to an outside force.

Question 20

End-feel

Answer 20

a way to interpret and measure joint play movements

Question 21

Treatment often combines _____ and ______ to restore a particular joint movement.

Answer 21

osteokinematic and arthrokinematic movements

Question 22

Follow the convex-concave rule to…

Answer 22

restore normal joint play which will increase pain-free joint ROM!!!