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Flashcards in Osteomyelitis Deck (16)
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1

What is osteomyelits?

bone infection (periosteium, cortical, medullary)

2

What are the 6 causes of of osteomyelits?

1. trauma
2. any infection directly enter the bone marrow or in the body carried by the blood to the bone
3. intravenous drug users
4. artificial joints, prosthetic bone devices,
5. poor circulation
6. weakened immune system

3

What is the most common cause of acute osteomyelitis?

- 80-90 % staph aureus
H. influenza and Group B. Strep

4

What is a "Brodie abcess", seen in acute osteomyelitis?

small multiple intraosseous abscesses (cortex)

5

What is "sequestrum" (destroyed bone)?

segmental necrosis of the bone

6

What is involucrum?

new reactive bone around the necrotic bone

7

5-25% of acute osteomyelitis persists as what?

chronic infection

8

What imaging indicates an infected bone?

MRI or CT

9

What method of diagnosis uses technetium-99 (absorbed by tumor)?

radionuclide bone scan

10

What is an aspiration culture?

(gram stain + culture and sensitivity)

11

What is tuberculous osteomyelitis (Pott's disease)?

a chronic granulomatous osteomyelitis
- spine is most common
-in developing countries most cases under 25

12

Patients with tuberculous osteomyelitis present with what?

- low grade fever, chills, and weight loss
- pain with motion
- localized tenderness
- rediculopathy

13

Lesions in tuberculous osteomyelitis

solitary but might be multifocal in immunosuppressed

14

histopathology in tuberculous osteomyelitis

lymphocytic inflitrate

15

congenital syphilis starts when?

5th month of gestation

16

congenital syphilis is due to what?

complication of adult type (tertiary stage is 2-5 years after primary)