Physiology: soft tissue injuries Flashcards
Types of cartilage
Physiology: soft tissue healing
primary intent soft tissue healing
the tissue has been surgically repaired
Physiology: soft tissue healing
secondary intent soft tissue healing
tissue heals on its own
Physiology: soft tissue healing
articular cartilage
- 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
Physiology: soft tissue healing
effects of immobilization in articular cartilage
- Decrease and softening of articular cartilage
- Pressure necrosis cartilage-cartilage contact
Physiology: soft tissue healing
articular cartilage healing time
6 months for type I and II collagen
Physiology: soft tissue healing
ligament will remodel based on
mechanical demands placed on it
Physiology: soft tissue healing
after ACL reconstruction, the site graft is the weakest during a _________ week period
3-7
Physiology: soft tissue healing
results of immobilization in ligaments
- decrease in stress load and cross-sectional area
- increases osteoclastic activity at bone-ligament complex
- Decrease GAG level
Physiology: soft tissue healing
GAGS are…
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.
Physiology: soft tissue healing
healing time of ligaments
up to 12 mo
Physiology: soft tissue healing
effects of immobilization in muscle
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
Physiology: soft tissue healing
which type of muscle fiber is more affected by immobilization?
type I
