Osteoarthritis (Week 12) Flashcards Preview

Pathophysiology > Osteoarthritis (Week 12) > Flashcards

Flashcards in Osteoarthritis (Week 12) Deck (18):
1

what is the most common joint disease?

OA

2

what is one of the leading causes of disability in the US?

OA

3

before age 50, more (males/females) have more OA

males

4

after age 70, more (males/females) have OA

females

5

what factors cause OA

genetic predisposition & joint injury history

6

what joints will obese people typically experience OA in

hip
knee

7

how strong is the genetic factor in OA

accounts for 39-70%
seems to require more than one gene

8

what happens in OA

-erosion and loss of articular cartilage in involved joint
-thickening and hardening (sclerosis) of bone beneath articular cartilage
-formation of osteophytes

9

what will you see on an x-ray that indicates loss of cartilage

narrowing of joint space

10

progression of OA

1. collagen flakes off surface of articular cartilage
2. deeper layers of cartilage form vertical fissures (fibrillation)
3. bone beneath deteriorating cartilage becomes dense and hard (sclerotic)
4. cartilage covered osteophytes grow outward from joint

11

fibrillation

vertical fissures in deeper layers of cartilage

12

symptoms of OA

1st- pain in joint with load bearing
pain
stiffness
limited AROM
limited PROM eventually
muscle wasting

13

pseudoparesis

pain inhibition of muscle activity; leads to muscle becoming less able to contract
-leads to muscle wasting

14

what age to symptoms of OA typically appear

40s and 50s

15

how can pain onset help differentiate between RA and OA

in OA- pain subsides with rest
in RA-pain does not subside with rest

16

joints most commonly affected by OA

hands
wrists
knees
feet
lower cervical
lumbar spine
shoulders
hips

17

tx of OA

NSAIDs
rest
ROM to prevent loss of AROM
increase strength and flexibility around joint
weight loss
use of cane if LE

18

types of surgical interventions for OA

releases
TKR
THR
last resort