The knee

Question 1

the kneeq

Answer 1

articulation between femur and tibia
little inherent stability
patella enhances mechanical advantage

Question 2

meniscal cartilage

Answer 2

90% type 1 collagen
arranged in circumferential and radial fibres
cover 2/3rds of the articular cartilage
function: load transmission, enhance articular conformity, distribution of synovial fluid, prevent soft tissue impingement

Question 3

haemarthrosis

Answer 3

ACL rupture
peripheral meniscal tear
osteochondral fracture

Question 4

locking of the knee

Answer 4

meniscal tear
ACL rupture
loose body
arthritis - fixed flexion deformity
pain inhibition

Question 5

inflammatory arthropathy

Answer 5

RA
psoriatic arthritis
rieters syndrome
behcets
IBD
ank spond

Question 6

connective tissue disorders

Answer 6

SLE
marfans
CREST syndrome
dermatomyositis

Question 7

RA

Answer 7

may begin at any time of life
relatively rapid, over weeks to months
small joints and large joints on both sides of the body symmetrically
morning stiffness lasting longer than 1 hour
freq fatigue and general malaise often present

Question 8

OA

Answer 8

usually later in life
slow, over years
joints ache and are tender but have little or no swelling
Sx often start on one side of the body
large weight bearing joints and DIPs
morning stiffness less than one hour, imrpoving before worsening over the course of the day
no systemic Sx