OA

Question 1

what is the definition of OA

Answer 1

joint failure caused by -
articular cartilage loss
increasing thickness and sclerosis of the subchondral bony plate
outgrowth of osteophytes at the joint margin
mild synovitis
weakness of the muscle bridging the joint

Question 2

what is the MC type of arthritis

Answer 2

OA

Question 3

what is the leading cause of disability in the elderly

Answer 3

OA

Question 4

what is the path of the articular cartilage loss

Answer 4

metabolic articular cartilage deficit (hyperACTIVE)

softening, chipping, fibrillations, clefts, and erosions progress to full thickness cartilage loss

Question 5

can chondrocytes repair?

Answer 5

only slightly…theyre damaged

Question 6

is the syovitis a big deal?

Answer 6

it is very mild (disease considered non-inflammatory)

Question 7

since the bone adjacent to the joint reinforces itself with subchondral sclerosis and osteophytes, what will you see?

Answer 7

large subchondral bone cysts may develop
sclerotic bone is formed in the floor of cartilage lesions
marginal osteophytes of new cartilage develop and ossify

Question 8

commonly affected joints in OA

Answer 8

c spine 
lumbosacral spine
hip 
knee 
first MTP
DIP (herbdens)
PIP (bouchards)
base of thumb

Question 9

is the joint pain activity related?

Answer 9

yes

Question 10

when is their joint stiffness?

Answer 10

in the morning it is brief - in contrast to RA

Question 11

what are some PE findings

Answer 11

joint margin tenderness

hip restricted internal rotation and abduction