OA vs RA Flashcards
What is the most common form of arthritis?
Osteoarthritis
What is the cause of osteoarthritis?
No single cause;
- biomechanical
- genetic
- metabolic factors (play a role)
Who are the most common people affected by OA? What increases the risk?
- Women over 45
- Increases with age
What are the risk factors associated with OA?
- Obesity
- Overuse of joint
- Infection
- Trauma
What happens with OA? What is the affected tissue made up of?
- Affects articular cartilage that surrounds subchondral bone
- The cartilage is type II collagen, chondrocytes, and proteoglycans
What and why is the tissue affected in a pt with OA?
The cartilage matrix is affected by…
- decreased synthesis and
- increased catabolism
How does OA damage the tissues associated with it?
- Damages cartilage
- Makes cartilage thinner
- Decreases proteoglycans
Where is OA most common?
- Weight bearing joints
- Hands
In OA, what are Bouchard’s and Herbeden’s nodes?
- enlargement of the proximal interphalangeal joints (PIP’s)
- enlargement of the distal interphalangeal joints (DIP’s) of the fingers
What are 5 characteristics associated with OA?
- Pain with activity that decreases with rest
- Morning stiffness
- Joint locking
- Crepitus (crunchy)
- Effusion (painful, little articular cartilage)
What can X Rays show with OA? What defects present with OA?
- Cyst and subchondral bone sclerosis
- Osteophytes (spurs and joint space narrowing)
Since there is no cure for OA what should we know in OA management?
- Takes steps to slow progression
- Assist in symptom management
- Every lb of BW increases forces at knee 2-3 lbs every single leg stance
In OA management we must understand that every pound of BW _____ forces on the _____ by ______ pounds every ______ ______ _____.
Increases; knee; 2-3; single leg stance
What is a good way to prevent or reduce progression OA (4)?
- Lose weight
- Vitamin D and calcium increase
- minimize immobilization to minimize cartilage damage
- Exercise in open chain to avoid shearing forces
What is the second most common form of arthritis?
Rheumatoid Arthritis (RA)