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Flashcards in BONE AND JOINT INFECTION Deck (17):
0

Define osteomyelitis.

Infection of bone

1

How do bones most often become infected?

Through haematogenous spread.

2

By what other means can bacteria or microorganisms reach bone?

Spread from soft tissue such as cellulitis
Direct inoculation - in surgery

3

Name 7 features of haematogenous OM?

Pus
Oedema
Congestion
Abscess
Sequestrum (dead bone)
Involucrum (new bone)
Sinus

4

What is the most common organism responsible for osteomyelitis in all age groups?

Staph aureus

5

How soon after the intial symptoms of infection will the infection be clear through imaging?

About 2 weeks

6

What are you looking for on a radiograph?

Lucency

7

What is spondylodiscitis?

Infection of a vertebral disc

8

How long should a course of antibiotics be for someone that presents with acute osteomyelitis?

6 weeks

9

How long should the course of antibiotics be for someone who presents with chronic osteomyelitis?

12 weeks

10

How long should a course of antibiotics be for a child who presents with osteomyelitis?

2-4 weeks

11

Define septic arthritis.

Infection of the synovium.

12

What is the organism which underlies most cases of septic arthirtis?

Staph aureus.

13

What are the surgical treatment options for septic arthritic patients?

Aspirate
Arthroscopic drainage
Open washout

14

What is the infection rate for primary intervention procedures?

1.5 - 2.5%

15

What are the organisms most often responsible for an infection of a prosthetic joint?

Staph epidermidis and aureus.

16

What are you likely to see on a radiograph that might help diagnose prosthetic joint infection?

Lucency in the bone around the prosthesis.