Developmental Dz - Duerr

Question 1

Osteochondrosis dissecans (OCD)

• Disruption of _____ ossification due to ___ ____
• Osteochondral (w/subchondral bone) or ________ flap (w/out bone)
• Causes ____, _____, _____, and ____ Long-term
• Removal —> gap fills with fibrocartilage
• PX: ____ for shoulder!

Answer 1

endochondral
rapid growth

cartilagenous

pain, effusion, lameness
OA

Good

Question 2

Angular Limb Deformity (ALD)

Remember the ‘paired bone system’ of Radius/Ulna

• premature ____ ___ physis most commonly injured physis
• Dx and tx early with ulnar _____

Answer 2

distal ulnar

ostectomy

*this will be discussed more in 773/774

Question 3

What do we call physeal fractures?

Answer 3

Salter-Harris!

Question 4

SH Classification:

\_\_\_\_\_ = through physis 
\_\_\_\_\_ = through physis and portion of metaphysis 
\_\_\_\_\_ = through physis and epiphysis = intraarticular
\_\_\_\_ = through epiphysis, across physis, and through metaphysis = intraarticular 
\_\_\_\_ = crushing of physis = not visible on rads in acute stage... need serial rads! 
\_\_\_\_ = asymmetrical crushing of physis = assymetric type V --> serial rads!

Answer 4

I 
II
III
IV
V
VI

*Slide 10 has image

Question 5

Hypertrophic Osteodystrophy - distruption of metaphyseal trabeculae in long bones of young, rapidly growing dogs

• Very ____ animals
• Breed: ___/____ dogs, ____ is predisposed
• Can be ____ ____
• ____ ____ on rads!
• _______ care
• Px: depends on ____ of dz

Answer 5

young (3-6 mo)

giant/large, Weimaraner

very sick (fever, depression, anorexia, diarrhea, wt loss)

double physis

supportive (analgesia w/NSAIDs, and GI protectants, rest)

severity (less severe has good to excellent px, but relapses may occur)

Question 6

Panosteitis

• Occurs in _____ to _____ dogs
• _____ lameness, and ____ systemic signs!
• On rads we see _____ ______ in bone medullary cavities
• Tx: _____ and ____
• Px: _____ but may have additional bouts

Answer 6

teenagers to adults

shifting, no

increased opacity

pain meds and rest

excellent

Question 7

Hypertrophic Osteopathy

• Occurs in _____ animals
• _____ limbs, and pt’s are reported as ____
• ______ lesions; bilaterally symmetrical periosteal rxn
• Assoc’d with ____/____ mass –> remove
• Px: depends on _____ ____

Answer 7

older

swollen, ADR

Pallisading

thoracic/abdominal

underlying dz