Physiology: soft tissue injuries Flashcards

Types of cartilage

1
Q

Physiology: soft tissue healing

primary intent soft tissue healing

A

the tissue has been surgically repaired

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2
Q

Physiology: soft tissue healing

secondary intent soft tissue healing

A

tissue heals on its own

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3
Q

Physiology: soft tissue healing

articular cartilage

A
  • Supportive tissues in the nose, ears, trachea, larynx, and smaller respiratory tubes.
  • Covering the articular surfaces of bones in synovial joints
  • Avascular: motion is lotion
  • Type II collagen
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4
Q

Physiology: soft tissue healing

effects of immobilization in articular cartilage

A
  • Decrease and softening of articular cartilage
  • Pressure necrosis cartilage-cartilage contact
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5
Q

Physiology: soft tissue healing

articular cartilage healing time

A

6 months for type I and II collagen

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6
Q

Physiology: soft tissue healing

ligament will remodel based on

A

mechanical demands placed on it

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7
Q

Physiology: soft tissue healing

after ACL reconstruction, the site graft is the weakest during a _________ week period

A

3-7

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8
Q

Physiology: soft tissue healing

results of immobilization in ligaments

A
  • decrease in stress load and cross-sectional area
  • increases osteoclastic activity at bone-ligament complex
  • Decrease GAG level
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9
Q

Physiology: soft tissue healing

GAGS are…

A

Glycosaminoglycans:

  • a bunch of sugar molecules linked together.
  • They come from what is known as the glycolytic pathway – that’s the same pathway you use to make energy from sugar in your body.
  • In order to make GAGs you need the main precursor, which is glucosamine.
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10
Q

Physiology: soft tissue healing

healing time of ligaments

A

up to 12 mo

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11
Q

Physiology: soft tissue healing

effects of immobilization in muscle

A

worse in the first 5-7 days:

  • loss of muscle strength
  • atrophy due to loss of fiber cross-sectional area
  • structural changes with 2 hours of immobilization
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12
Q

Physiology: soft tissue healing

which type of muscle fiber is more affected by immobilization?

A

type I

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