Ostoarthritis Flashcards
What is osteoarthritis?
most common form of joint disease in north america
slow and progressive noninflammatory disorder of the diarthrodial (synovial) joints
is OA considered a normal form of aging
no
when can cartilage destruction begin:
affected by age:
few experience symptoms after:
between 20-30 and affected by 40 few experience symptoms after 50 and 60
after 55 whos more affected men or women
women
OA is usually cause by
a known event or condition that directly damages cartilage or causes joint inability
in aging women is believed to be due to
estrogen reduction at menopause
OA modifiable risk factors:
obesity - contributes to knee and hip
anterior cruciate ligament injury - associate with quick tops and pivoting
jobs that require frequent kneeling and stooping - high knee risk
Ways to prevent OA
regular moderate exercise which also helps with weight control has been shown to decrease likelihood of disease development and progression
OA pathogenesis
complex with genetic, metabolic and local factors that interact and cause a process
OA results from***
cartilage damage at the level of chondrocytes
OA causes smooth white translucent articular cartilage to become
dull yellow and granular and it graducally becomes softer, less elastic and less able to resist wear with heavy use
Early changes in OA
synovium inflamed
joint capsule inflamed and edematous
cartilage splits an dis eroded
joint space narrowed by loss of cartilage
With time how does OA change joints
Outgrowth of bone
Development of sub-articular bone cysts
Hyperplasia of synovium with inflammation
thickening of subchondral bone plate
is inflammation characteristic of OA
no
Clinical manifestations: Systemic**
None