Non-fracture Related Bone Conditions

Question 1

Bone infections

Answer 1

Osteitis and osteomyelitis

• bone inflammation and infection
• usually associated with open fractures, sx repair, systemic illness
• Staphloccoli (most common), strep, E.coli
• bite wounds to lower extremities, jaws, coccygeal vertebrae in cats (Pasturella, Actinomyces, Clostridium and Bacterioides)

Question 2

Acute bone infections typically exhibit what kinds of signs?

Answer 2

Pain, swelling, redness, high fever, recent history of incident

Question 3

Signs of post surgical infection occurs when?

Answer 3

2-3 days post op

Question 4

Chronic infection of the bone shows what kind of signs?

Answer 4

*Draining tracts, muscle atrophy, lameness, radiographic changes of bone resorption, osteoporosis, or dead bone that has separated completely from the healing fracture

Question 5

Sequestrum

Answer 5

Refers to a piece of bone that has separated completely from the healing fracture
-usually surrounded by infected fluid, will cause draining tracts and can take years to resorb

Question 6

Bone neoplasm

Answer 6

Osteosarcoma is the leading neoplasm, then carcinoma and lymphomas

Question 7

Hypertrophic osteodystrophy (HOD)

Answer 7

• Young animal syndrome
• Medium to giant breed dogs
• Commonly long bones affected
• Mottled appearance on rads
• Extraperiosteal calcifications
• Viral, immune, vitamin C deficiency - eitology debatable

Question 8

Panosteitis

Answer 8

Eosinophilic osteitis - self limiting syndrome of young dogs

• eitology unknown
• possible autoimmune or viral infections