Tendons

Question 1

Tendon composition? (3)

Answer 1

Water
Collagen (I and III)
Proteoglycans

Question 2

Decorin (PG) function?

Answer 2

Regulates the diameter of collagen

Question 3

Aggrecan function?

Answer 3

Found in areas of tendon compression

Question 4

Inserts into bone through 4 zones. Name them:

Answer 4

1. Tendon
2. Uncalcified fibrocartilage
3. Calcified fibrocartilage
4. Bone

Question 5

Blood supply from? (3)

Answer 5

1. Musculotendinous junction
2. Oseotendinous junction
3. Surrounding tissues(Flexor tendons)

Question 6

3 major differences btw tendons and ligaments? Tendons:

Answer 6

1. Less visoelastic
2. Contain more collagen
3. Contain less elastin/PG/

Question 7

4 stages of tendon healing?

Answer 7

1. Hemostasis
2. Inflammation
3. Organogenesis
4. Remodelling

Question 8

Fibrobasts produce which type of collagen during inflammatory phase?

Answer 8

3

Question 9

Organogenesis marks what 2 changes?

Answer 9

Collagen organisation

Angiogenesis

Question 10

Tendon repair weakest at?

Answer 10

7-10 days

Question 11

Tendon repair strongest at?

Answer 11

6 months

Question 12

What happens during remodelling phase?

Answer 12

Type 3 collagen replaced by type 1

Up to 1 year