age related joint changes - exam 2 Flashcards
what are 3 names for age related joint changes?
degenerative joint disease (DJD)
osteoarthritis (OA)
spondylosis if multiple spinal levels
what region is the most common to find an age related joint change?
C5-7
what is the most common cause of disability in the US?
what percent of adults > 55 have this?
age related joint changes (1 in 5 adults)
80%
what two joints are the most common sites for age related joint changes?
hip and knee
if you’re an athlete, can you assume your body will experience age related joint changes more than other people?
no
physical activity is protective - trauma would be the only thing that could progress age related joint changes
what structure is primarily involved with age related joint changes?
articular cartilage
why is articular cartilage not capable of producing an inflammatory response?
so what is the source of inflammation?
it is avascular
bone on bone decreases symptoms because it has vascularity which creates inflammation response which helps heal
the bone (because of above)
articular cartilage is resistant to _______
bone is resistant to ______
compression
tension
why does the articular cartilage depend diffusion?
thrives on intermittent compression and decompression with gliding
what is the hydroelastic capability in articular cartilage?
with quicker compression from muscle activity or WB, the quicker it’s pushing back
fluid doesn’t like leaving quickly - need increase in synovial fluid
why is a closed pack position important in articular cartilage?
it allows for full ROM which is needed to maximally get nutrients in and waste out
what is the more common cause of age related joint change? in what population?
degenerative articular cartilage - typically in older adults
what are the 5 synovial joint components?
- articular cartilage
- joint space
- fibrous capsule
- synovial membrane
- synovial fluid
when articular cartilage frays, blisters or tears, what happens to lead to periarticular tissue inflammation?
after fray blister or tear, joint space thins and narrows –> bone is overloaded which leads to greater bony stress –> fibrous capsule slackens eventually leading to thickening and stiffness –> synovial membrane produces less synovial fluid and nutrients –> periarticular tissue inflammation (ligaments, capsule, mm)
what is the patient likely to tell you if they have age related joint changes in the cervical region?
- gradual onset of neck P! (thickened capsule)
- P! w prolonged positions (FHP or sleeping)
- morning stiffness or after prolonged positions < 30 minutes
- P! and limitation looking in blind spots or looking up
- possible paresthesias - narrowing of foramen compressing spinal n.
- some movement helps but too much makes it worse -
