Approach to Arthrides and Brain Tumours

Question 0

describe lesions arising from joint?

Answer 0

joint narrowing

both sides of joint

Question 1

Where does a bone origin lesion come from?

Answer 1

begins away from the joint

stays away from joint

Question 2

after determining if lesion from joint then what?

Answer 2

one or more joint?

exclude septic arthritis

Question 3

4 main Patterns of arthritis:

Answer 3

degenerative (OA)
Inflammatory (RA, AS)
depositional (Gout)
infection

Question 4

what is the body’s attempt to repairing cartilage in OA?

Answer 4

subchondral sclerosis

osteophyte formation

Question 5

how do you get subchondral cysts?

Answer 5

implosion of fluid through crack in damaged subchondral bone

Question 6

how take knee xray to check OA?

Answer 6

standing

Question 7

inflammatory arthritis happens how structurally?

Answer 7

synovial inflamm or pannus formation

Question 8

what does pannus do to the joint?

Answer 8

destroys bone at margins of joint where there is no articular cartilage, then the articular cartilage bilaterally

Question 9

4 hallmarks of RA?

Answer 9

erosions
uniform joint space loss
subluxation and deformity
symmetrical

Question 10

what joints in hand are usually spared in RA?

Answer 10

DIP joints

Question 11

seronegative arthrides features?

Answer 11

fusion of joint
periosteal new bone
syndesmophytes

Question 12

where does seronegative arthrides usually occur?

Answer 12

SI joints, spine

sometimes hands and feet

Question 13

syndesmophytes are from what? due to what?

Answer 13

from annular fibrosis of disc extend from one vertebra to another

Question 14

what kind of arthritis is psoriatic arthritis?

Answer 14

seronegative arthritis

Question 15

septic arthritis, how to dx?

Answer 15

joint aspiration before plain films (takes 2-3 weeks to show up)

Question 16

when to think it’s a bone tumour?

Answer 16

if there is a solitary destructive

Question 17

3 categories of bone lesions

Answer 17

benign: leave it
aggressive: destructive, could be infective, need investigations
intermediate: need biopsy

Question 18

features of benign bone tumours

Answer 18

well defined margin
schlerotic border
linear pattern of periosteal bone
no soft tissue mass
stable over time
usu. in fingeres

Question 19

what are malignant features of bone tumours? 5 of them

Answer 19

ill defined margins
cortical destruction
periosteal new bone
soft tissue mass
increase in size over time

Question 20

osteosarcoma usually occurs where?

Answer 20

metaphysis around knee