arthritis- radiology lecture Flashcards
osteoarthritis
protective cartilage at ends of bones breaks down
which joints are affected in primary osteoarthritis
weight bearing / active joints
secondary osteo
affects an unexpected site due to overuse, previous injury or previous arthritis
what can lead to secondary osteo
rheumatoid arthritis and gout
Most commonly affected joints in osteo
knees, hands and hips
join type affected in osteo
synovial
symmetry of OA
asymmetrical within or between joints
radiographic features in OA
healthy bones have joint space and those with OA is reduced space
effect of synovial fluid
dissects into bone forming cycts s
symmetry in RA
symmetrical
joints affected in RA
synovial only, HANDS
what may cause soft tissue swelling
synovial proliferation and reactive joint effuion
osteopenia
decraese in bone mineral density
hallmark of RA
Marginal erosion ;
inflamed synovium destroys bone intially at joint margin
effect of erosion
bone gets smaller
seronegative arthritides
ankylosing spondylitis
psoriatic arthritis
reiters syndrome
what is seronegative arthritides characterised by
synovitis and enthesitis
enthesitis
inflammation at sites where ligaments and tendosn attach to bone
synovitis
inflammation of joint and tendon sheath linigns
ankylosis
stiffness of a joint
where is psoriatic arthritis seen
small joints of hands and feet
where is ankylosing spondylitis and reiters syndrome seen
scattered large lower limb joints
where is more isotpoe seen
inflamed joint
isotope test
uses a small dose of radioactive chemical to look at bones, organs and other parts of the body
xray findings in osteo
LOSS
loss of joint space
marginal osteophytes
sclerosis
subchondral cysts
management of osteo
excersize
nsaids
steroid injections for flare up ; 3 per year
replacement of joint
difference between RA and OA
RA is an Inflammatory autoimmune disorder characterized by joint pain, swelling, and synovial destruction
OA is Chronic disease involving the imbalance between wear and repair of articular (hyaline) cartilage leading to progressive cartilage loss and accompanying periarticular change
