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Systems: MSK AB > Ligament Injuries > Flashcards

Flashcards in Ligament Injuries Deck (12)
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1

What are ligaments?

-Dense bands of collagenous tissue (condensations capsule) which span a joint
-They are anchored to the bone at either end

2

What is the function of ligaments?

Offer joint stability through a range of motion (different portions ligament tensioned at different positions)

3

What is the structure of ligaments?

-Composed of collagen fibres (type 1) and fibroblasts (communicate)
-Have sensory fibres for proprioception, stretch and sensory
-Vessels at the surface
-Crimping allows stretch

4

How do ligaments compare to tendons in composition?

Compare to tendons, ligaments have:
-Lower percentage of collagen
-Higher percentage of proteoglycans and water
-Less organised collagen fibres
-Rounder fibroblasts

5

When does ligament rupture occur?

-Forces exceed strength of ligament (expected/unexpected/rate loaded)
-Can be complete or incomplete

6

What can ligament rupture result in?

-Loss of stability in the joint
-Proprioception loss

7

What are the 3 stages of ligament healing?

-Haemorrhage
-Proliferative stage
-Remodelling

8

What is involved in the haemorrhage stage of healing?

-Blood clot which is resorbed
-Replaced with a heavy cellular infiltrate
-Hypertrophic vascular response

9

What is involved in the proliferative stage of healing?

-Production of scar tissue
-Disorganised collagenous connective tissue

10

What is involved in the remodelling stage of healing?

-Matrix becomes more ligament like
-Major differences in composition, architecture and function persist

11

When is conservative treatment opted for in ligament ruptures?

-Partial tears
-No instability of joint
-Poor candidate for surgery

12

When is surgery opted for, in ligament ruptures?

-Instability
-Expectation (sports)
-Compulsory (multiple)