Prac: Musculoskeletal Path Imaging and Dxx

Question 1

Tx septic joints?

Answer 1

6 weeks BS ABx

Question 2

How can osteomyelitis and osteosarcoma be differentiated on radiographs?

Answer 2

• osteomyelitis liekly to cross joints and spread to surrounding bones
• osteosarc likely contained to one bone (metastasises to lungs but not locally invasive

Question 3

Common sites for osteosarcoma?

Answer 3

• away from the elbow and close to the knee
• distal radius, proximal humerus
  > irish wolfhounds

Question 4

Predisposing factors for OCD?

Answer 4

• high level excercise
• high plane nutrition (develop too quickly)
• Dz of the maturing skeleton of young animals

Question 5

What are the 2 stages of laminitis?

Answer 5

• separation in acute phase (will see gap on rads)

- change in density = scarring (chronic)

Question 6

What is maries disease?

Answer 6

• periosteal new bone formation on limbs
• d/t abdomenal/thoracic masses
• if 1* mass removed the bone will remodel back to normal
• thought d/t mass effect of tumour, ^ blood supply to periosteu
• even benign tumours/granulomas can cause this
• prog good!

Question 7

What is white muscle disease? When may this be seen? Dxx?

Answer 7

• pale streaky muscle
• d/t selenium/Vit E deficiency
• degenerative muscle fibres
• deficient pasture/lack of supplements
• commonish in exotics
• Dxx: muscle biopsy $$$ /CK and AST levels ]
• will see macrophages interdispersed with short muscley bits rathr than long muscle fibres .