Medical Management of Degenerative Joint Disease Flashcards

1
Q

what happens in the intimal layer of the synovium?

A

phagocytosis: type A synoviocytes
protein synthesis: type B synoviocytes

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2
Q

why are changes in synovial fluid properties a problem?

A

less effective boundary lubrication of soft tissues

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3
Q

what are some commonly used medications?

A

NSAIDs
corticosteroids
hyaluronan
nutriceuticals
orthobiologics

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4
Q

what does interleukin-1 do?

A

major mediator of cartilage degeneration and destruction

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5
Q

what are the indications for IRAP?

A

mild to moderate osteoarthritis
capsulitis/synovitis
post-arthroscopic exploration
OCD post-op
post septic arthritis?

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6
Q

what does the subintimal layer do?

A

blood supply
innervation

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7
Q

what does articular cartilage lack?

A

vascular, lymphatic, neural supply
relies on synovial fluid for nutrients and waste removal

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8
Q

________________ predominance leads to degenerative joint disease

A

catabolic

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9
Q

why are changes in synovial fluid properties a problem in joint disease?

A

reduction in synovial fluid properties
altered cartilage nutrition
less effective boundary lubrication to soft tissues

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10
Q

what can we do to decrease degenerative joint disease?

A

slow down progression
keep what’s healthy
create/repair tissue as close to normal as possible
reduce inflammation
return catabolic:anabolic ratio
intra-articular vs systemic therapy

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11
Q

what are some NSAIDs?

A

phenylbutazone
flunixin
surpass: 1% diclofenac sodium
cyclooxygenase inhibitors

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12
Q

what corticosteroids are used?

A

methylprednisolone acetate/depo medrol
triamcinolone/vetalog
betamethasone/betavet/soluspan
isoflupredone acetate/predef

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13
Q

which corticosteroid has potential chondroprotective properties?

A

triamcinolone/vetalog

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14
Q

which corticosteroid is long acting?

A

methylprednisolone acetate

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15
Q

what is IA hyaluronan?

A

mild anti-inflammatory
legend

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16
Q

what is polyglycan?

A

combination of hyaluronan and glycosaminoglycans

17
Q

what is the major component of adequan?

A

chondroitin sulfate
is a polysulfated glycosaminoglycan

18
Q

what are the potential adverse effects of polysulfated glycosaminoglycans?

A

intraarticular use
alterations in coagulation profile
elevation of MICs from some antibiotics in synovial fluid

19
Q

why are corticosteroids used with hyaluronan in intraarticular injections?

A

enhance each others effectiveness
decrease negative effects of corticosteroid on cartilage
limited to no evidence

20
Q

which joints are high motion?

A

fetlock
stifle

21
Q

which joints are low motion?

A

tarsometatarsal joint
pastern joint

22
Q

what is a natural antagonist to interleukin-1?

A

IL-1 RA
does not cause a biologic response

23
Q

what does platelet rich plasma do?

A

decreases apoptosis and increases autophagy of osteoarthritic chondrocytes