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NR 511 Final |LATEST VERSION |NEW UPDATE |GUARANTEED PASS| |BEST STUDYING MATERIAL
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NR 511 Final |LATEST VERSION |NEW UPDATE |GUARANTEED PASS| |BEST STUDYING MATERIAL
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NR 511 Final |LATEST VERSION |NEW UPDATE|GUARANTEED PASS|2024-2025 |BEST
STUDYING MATERIAL
T/F - the capsule does not contain mechanoreceptors
- ANSWER False - the joint capsule contains many mechanoreceptors, which are
involved in joint proprioception
What is a Pacinian Corpuscle?
- ANSWER Layers of connective tissue around a nerve, which are responsive to
stretch, tension, and pressure
Well-represented in the joint capsule
What are the components of articular cartilage?
- ANSWER Glycosaminoglycan
Mainly type II collagen
Presence of chondrocytes
T/F - because cartilage healing involves different types of collagen, the newly
restored cartilage does not integrate as well into the damaged structure -
ANSWER True - cartilage is mostly type II collagen, but the healing process uses
mostly type I and type III collagen, which leads to poorer integration
,What happens to collagen that is close to a bony insertion point?
- ANSWER Exposed to an enzyme that triggers calcification of cartilage
Results in tide mark - transition between uncalcified and calcified cartilage
Found in areas of high mechanical demand, to minimize an abrupt rise in tissue
stress
At the ____________________, collagen fibres from the _______________ of
calcified cartilage insert directly into the cortical bone.
- ANSWER osteochondral junction, radial zone
T/F - osteoporosis is protective against osteoarthritis development
- ANSWER True!
More squishy bone is able to absorb more load, with less chance of damaging the
articular cartilage
What is osteochondrosis?
- ANSWER Cartilage becomes inflamed due to overuse or biomechanical factors.
Growth Plate
- ANSWER Plate of proliferating cartilage, the physis, that unites bones
Can have osteochondrosis or fractures here.
, T/F - Cartilage has a good healing capacity
- ANSWER False - extremely limited healing capacity, due to a lack of vessels
Cartilage defects larger than _________ are thought to rarely, if ever, heal. -
ANSWER 2 mm.
T/F - in cartilage injuries, it is expected that a minimal inflammatory response
would occur
- ANSWER True - due to minimal blood flow, inflammatory response does not
happen as effectively
Acute Chondral Injuries (definition)
- ANSWER An acute mechanical disruption of articular cartilage
Four types of traumatic lesions have been classified
Types of Traumatic Chondral Lesions (four)
- ANSWER Type 1 - linear
Type 2 - stellate
Type 3 - flap
Type 4 - crater
Type I Chondral Lesion (Characteristics)
- ANSWER Linear
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