LG3.12 Biomechanics – Dr. Roush Flashcards Preview

NMSK A Test 2 > LG3.12 Biomechanics – Dr. Roush > Flashcards

Flashcards in LG3.12 Biomechanics – Dr. Roush Deck (19):
1

What is closed packed position?

-There is maximal surface contact between two surfaces
-Attachements of ligaments are farthest apart under tension
-Capsular structures are taunt
-the joint is mechanically compressed and difficult to distract or separate.

2

What is loosed-packed position?

-ligamentous and capsular structures are slack
-joint surfaces may be distracted several millimeters
-Allow spin, roll, and slide
-May decrease joint friction

3

What direction of movement occurs in concave on convex?

Same direction

4

What is an example of concave on convex?

Femoral tibial joint

5

What direction of movement occurs in convex on concave motion?

Oposite directions

6

What is an example of concave on convex?

Gleno-humeral joint

7

What are Sellar joints?

have both concave and convex curvatures

8

What is osteokinematics?

-How bones move in relation to another
-Common terms are flexion, extension, abduction, adduction

9

What is anisotropic?

A material that has directional structure orientation with its mechanical properties different in different directions.

10

What is Arthokinematics?

The bone surfaces move in relation to one another

11

What defines rocking and rolling motion?

Each point on one surface makes contact with new points of other surfaces.

12

What defines gliding or sliding?

Same point on one surface makes contact with a new point of other surface.

13

What is spinning?

Pure rotation around the mechanical axis

14

What is swing?

movement other than pure swing

15

What is the two types of swing?

1) Cardinal swing
2) Arcuate swing

16

What is cardinal swing?

Pure swing moves in plane

17

What is arcuate swing?

Impure swing moves out of plan

18

What side do you tell a patient to use a cane?

opposite side of bad hip

19

What side do you tell a patient to carry heavy bags/etc?

On the same side