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Flashcards in Joints and Joint tissue Deck (20):
1

Two types of Synarthroses (fibrous)

1) Synostosis - may fuse (skull suture)
2) Syndesmosis - unfused (interosseous)

2

What predominately makes up synarthroses

collagen fibres

3

What type of joint is a synchondroses, and what types are there?

Cartilagenous. There are primary or secondary

4

Primary synchondroses?

bone-cartilage-bone.
eg) epiphyseal plates (small amount of movement)
eg) costocartilage (for ventilation)

5

Secondary synchondroses?

bone-cartilage-FCT-cartilage-bone
eg) intervertebral disc
vertebrae-hyaline cartilage-NP and AF- hyaline cart-vertebrae
eg) manubriosternal joint

6

Whats in NP

hyaluronon, sulphate and PG

7

Whys it hard to pull apart two vertebral bodies?

Due to the annulus fibrosus. It has collagen fibres that extend into the cartilage and some even down into bone (sharpeys fibres)

8

There is a ____________ between NP and AF

gradual transition

9

How do we shrink over a day?

NP is sandwhiched between two cartilage plates. These squeeze down on NP and water (bound to hyaluronan) is squeezed out/ lost, and the tissue collapses a little. Collectively over all the vertebrae, you loss a few mm, that is regained at night.

10

where is the COG in the different regions

Cervical= right over NP
thoracic= posterior as there is more ant tissue
lumber= both COG and NP are posterior

11

What is the danger in the lumbar region?

As both COG and NP are posterior, this becomes a weak point. The AF can stiffen and break, and allow the soft NP to leak out and impinge a nerve root

12

What's a diarthroses

A synovial joint
bone-cartilage-jointspace-cartilage-bone

13

what are menisci and what can happen to them

Wedges of fibrocartilage that improve the articulation. very thin centrally, these can tear and jam into the joint

14

examples of diarthroses

1) temporomandibular joint

15

Whats in synovial fluid?

hyaluronan (binds water and low coefficients of friction)

16

Where do you find synovium?

tendon sheaths
bursa

17

Where are you most likely to develop degenerative artritis?

In the periphery of your joints where the PG content is lower.

18

Ways to prevent degenerative arthritis

By using your joints IN THE FULL RANGE OF MOTION

19

What can happen when you get bone on bone

Your bone tries to disperse the force, and creates 'osteophytes'/bony spurs.

20

uniaxial, biaxial and triaxial/multiaxial

one/two/three planes of movement
1) Hinge joint (shoulder)
2) finger joint
3) Ball and socket (shoulder)