Joints & Vertebral Pathology Flashcards
lesions associated with DJD (osteoarthritis, osteoarthrosis)
fibrillation/cartilage roughening
osteophyte formation
subchondral sclerosis
synovial hyperplasia
eburnation
what disease in common in young dogs and horses that results in lameness, degenerative osteoarthritis and subchondral bone cyst/fracture
osteochondrosis dissecans (OCD)
lesions of osteochondrosis in dogs and horses
dogs - humeral head
horses - lateral trochlear ridge, medial femoral condyle, patella, distal tibia
pathogenesis of OCD
focal failure of blood supply to growing cartilage
vascular infarct/necrotic cartilage > OCD > DJD
what causes hip dysplasia to become DJD
lack of conformity of femoral head to acetabulum
shallow acetabulum and joint laxity
what is the most common skeletal disease of large breed/giant breed dogs
hip dysplasia
difference between fibrinous and suppurative arthritis
fibrinous - acute inflam, articular cartilage is not affected
suppurative - infectious or non-infectious, articular cartilage degeneration
common cause of infectious osteoarthritis
bacterial?
viral?
Mycoplasma spp.
caprine arthritis encephalitis virus –> carpal hygroma
type of hypersensitivity for immune mediated polyarthritis
type III hypersensitivity
causes of IMPA
systemic lupus erythematosus (nonerosive)
rheumatoid arthritis (rare, erosive, destructive with IgG/IgM)
synovial sarcoma
could be soft tissue sarcoma
large breed dog
crosses the joint
periarticular histiocytic sarcoma
large breed, middle aged dogs
appendicular skeleton
crosses the joint
most common joint tumor in dogs?
periarticular histiocytic sarcoma
pathogenesis of IVDD in chondrodysplastic dogs
hansen type 1
degeneration of nucleus pulpus
pathogenesis of IVDD in non-chondrodysplastic dogs
hansen type 2
degeneration of annulus fibers
