Arthritis Flashcards
What is arthritis characterised by?
Painful and often swollen joints
How many types of arthritis are there?
Over 100 different types
What is osteoarthritis?
The most common type of arthritis - approx 1 in 5 adults over 45yrs in England have osteoarthritis in the knee, 1 in 9 have it in the hip.
Any joint can develop osteoarthritis however knee and hips are most commonly affected.
What causes osteoarthritis?
Develops due to deterioration of articular cartilage.
What is articular cartilage?
Articular cartilage is a protective ‘coating’ allowing for smooth articulation of
the joint also acts as a shock
absorber.
What are the symptoms of osteoarthritis?
Pain and stiffness in joints
Joint tenderness
Joints appearing larger than usual
Crepitus
Limited range of movement in joints.
Osteoarthritis worsens over time and can affect more than 1 joint. However is not systemic or symmetrical.
Where is osteoarthritis common?
Knees, hips, hands, spine.
What are the risk factors of arthritis?
Joint injury
Gout
Age - over 45 most common
Family history
Obesity
Exact causes are unknown
What is the epidemiology of rheumatoid arthritis?
450,000 adults have been diagnosed with it.
Prevalence of around 1% of the UK population.
More common in woman then men.
What is rheumatoid arthritis?
Rheumatoid arthritis is a long-term condition that causes pain, swelling and
stiffness in the joints. The
condition usually affects the hands, feet and wrists.
What causes rheumatoid arthritis?
When antibodies attack the synovium, this results in inflammation (synovitis)
Thickened synovial membrane gradually causes the cartilage and bones to erode.
Causing Pannus.
Eventually boney ankylosis will form
What is pannus?
Pannus is an abnormal layer of fibrovascular tissue or granulation tissue. Common sites for pannus formation include over the cornea, over a joint surface (as seen in rheumatoid arthritis), or on a prosthetic heart valve.
What can rheumatoid arthritis increase the risk of?
Heart disease.
Is rheumatoid arthritis bilateral or unilateral?
Bi-lateral.
Where does rheumatoid arthritis most commonly affect?
Hands and feet