Osteomyelitis

Question 1

Most commonly affected bone in adults

Answer 1

Vertebral column

Question 2

Classification based on mechanism

Answer 2

Hematogenous
Contiguous
Secondary

Question 3

Most common underlying condition for cause of osteomyelitis sec to vascular insufficiency or peripheral neuropathy

Answer 3

DM

Question 4

Endocarditis Source of half of cases of osteomyelitis caused by what org

Answer 4

Viridans streptococci

Question 5

Early onset ( 30 or less days after implant) is cuased most commonly by

What is the presentation?

Answer 5

S. Aureus

Poor wound healing and fever

Question 6

Late onset (>30 days after the surgery) caused most commonly by

Presentation?

Answer 6

CoNS and P. Acnes

Rately with fever; + sinus tract in 1/4 of cases

Question 7

If negative blood CS, what should you do?

Answer 7

Do CT guided or open biopsy

Question 8

Of still negative biopsy? What’s next?

What org usually detected?

Answer 8

Do PCR of both biopsy and aspirated
pus

Tropheryma whipplei

Question 9

First step in eval px without neuro symptoms and may reveal alternative dx

Answer 9

Plain radiography

Question 10

Gold standard

Answer 10

MRI

Question 11

What is the MC alternative dx?

Especially if blood cs neg

Answer 11

Erosive osteochondrosis