07 - miscellaneous diseases of bone

Question 1

(panosteitis)

1. affect young large breed dogs
2. what breed gets alot?
3. causes include stress, vasc abnormalities, metabolic disorders, allergies
4. see degeneration of medullary adipocytes

Answer 1

2. german shephard

Question 2

(panosteitis)

1. usually occurs up to 1 year of age
2. males or females affected more?
3. Cx?

Answer 2

2. males (4:1)
3. acute weight bearing lameness with no history of trauma. Cx continue for several months and resolve by about 18 months of age.

Question 3

(panosteitis)

(dx)

1. pain from palpation
2. radiographs

Question 4

(panosteitis)

(tx)

1. self-limiting, administer NSAIDs and restirct exercise

Question 5

(HOD)

1. cause unknown - NOT vit C
2. usually occurs in what dogs?
3. signs start when?
4. Cx?

Answer 5

2. young, rapidly growing large and giant breed dogs
3. 3 to 4 months of age
4. bilateral lameness

(anorexia, fever, depression if severe)

Question 6

(HOD)

(dx)

1. often based on history and physical examination
2. radiographs show generalized sclerosis and enlargement of what?

Answer 6

2. metaphysis (parallel lines!)

Question 7

(HOD)

(tx)

1. if mild, regression is often spontaneous
2. decreaseing caloric intake may help
3. if severe, may need feeding tube
4. give NSAIds as needed

Question 8

(hypertrophic osteopathy HO)

1. occurs secondary to other dz - usually what?
2. path unknown - may related to what though?

Answer 8

1. metastatic pulmonary neoplasia
2. ^ peripheral vascular supply

Question 9

(HO)

1. any breed/age of dog/cat can be affected
2. more in females and large breed dogs cause of mammary tumors and pirmary bone tumors in large

Question 10

(HO)

(dx)

1. distal limbs are swollen, warm, painful
2. radio - symmetric periosteal rxn, start distal

Question 11

(HO)

1. if pfimary cause resolves - will lesions regress?
2. tx?

Answer 11

1. yeppers
2. address 1° cause

(vagotomy may help if primary mass can’t be removed)

Question 12

(craniomandibular osteopathy)

1. what is this?
2. probably heritable

Answer 12

1. osteoclastic resorption of mandibular bone, followed by production of woven bone

(can also happen in occiptial bones or temporal bones)

Question 13

(craniomandibular osteopathy)

(dx)

1. pain when open mouth
2. radio - bilateral bony proliferation

Question 14

(craniomandibular osteopahy)

1. bone stops growing at what age?
2. will lesions regress?
3. prog is poor if what has occured?

Answer 14

1. 1 year
2. possibly
3. fusion of TMJ joint

Question 15

(craniomandibular osteopathy)

1. tx?

Answer 15

1. support, NSAIDs

sx doesn’t work well

Question 16

(bone cysts)

1. affects what age and size?
2. pain, swelling, stiffness, acute lameness may be present
3. radiographs show what?

Answer 16

1. large under 1 year
2. large, radiolucent area in metaphysis (may be fracutres present)

Question 17

(bone cysts)

(tx)

1. ?

Answer 17

1. curettage and fill defect with cancellous bone

Question 18

(retained endochondral carilaginous core)

1. cause unknown
2. occurs where in young large breed dogs?
3. tx?

Answer 18

2. distal ulnar metaphysis
3. usually not necessary if there is no deformity (an incidental finding)

Question 19