Canine Flash Notes - OCD Flashcards
what dogs are predisposed to developing OCD?
fast growing large & giant breed dogs (especially males), young dogs 4-8 months of age (maximum growth rate)
on a supplemented commercial diet or homemade diet
what is the classic case presentation of a dog with OCD?
lame - unilateral or bilateral, may be short stepping gait
joint pain!!!! swelling, crepitus, decreased range of motion, & muscle atrophy
what lab test is not helpful for diagnosing a dog with OCD?
serum calcium, phosphorus, & vitamin d levels are NOT HELPFUL
how is OCD in dogs diagnosed?
rads of affected & contralateral joints - looking for indentation of subchondral bone especially at the caudal humeral head & medial humeral condyle
contrast rads or CT imaging may be necessary
arthroscopy
what are the most common locations of OCD in dogs?
caudal humeral head & medial humeral condyle
how is OCD in dogs treated?
surgical/arthroscopic debridement to remove devitalized cartilage & stimulate new cartilage formation
exercise restriction!!!! NSAIDS, nutraceuticals, & chondroprotective agents
how is nutrition used to prevent OCD in dogs?
feed puppy food specific for large/giant breeds, fed based on body condition score to maintain at 4/9 or 5/9
do NOT add supplements - do NOT feed adult food to puppies
calcium content should be <3.5g/1000 kcal & energy density <4 kcal/g (<17% fat)
how is OCD prevented in dogs?
exercise retention - give puppy time to grow/don’t train too heavily or too early
do not breed affected dogs & their relatives
nutrition
what is osteochondrosis? what is osteochondrosis dissecans?
osteochondrosis - disturbed endochondral ossification from excessive Ca, P, & vitamin D
osteochondrosis dissecans - inflammation of the subchondral bone with formation of a cartilage flap, often associated with hip dysplasia in dogs
what is the typical presentation of a horse with OCD?
yearling with synovial effusion that is either not lame at all or mildly lame
what are the most common locations for OCD to occur in horses?
distal intermediate ridge of the talus
vertebral articular facets
shoulder
medial femorotibial joint
fetlock
what are the 5 most common sites of OCD in dogs?
- caudal humeral head
- medial humeral condyle
- medial or lateral trochlear ridge of the talus
- lateral or medial femoral condyle
- vertebral articular processes
what horse breeds may be predisposed to getting OCD?
standardbred & swedish warmbloods
what dog breeds often get OCD?
border collie, german shepherd, golden retriever, great dane, irish
wolfhound, labradors, newfoundland, rottweiler, saint bernard, & bernese mountain dogs
