Osteomyelitis Flashcards

1
Q

What is the most common causative organism osteomyelitis?

A

Staph aureus

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2
Q

What is the most common cause of osteomyelitis <1 month old?

A

E. coli

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3
Q

What is a causative bacteria of osteomyelitis with prosthesis?

A

Coag - staph

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4
Q

What is a common cause of osteomyelitis with penetrating injury?

A

Pseudomonas aeroginosa

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5
Q

What is a common cause of osteomyelitis with sickle cell?

A

Salmonella

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6
Q

What is a common cause of osteomyelitis in HIV/AIDs?

A

Candida

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7
Q

What are some risk factors for osteomyelitis?

A

Extremes of age
DM
Immunocompromised
Recent open fracture or surgery

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8
Q

What is the most common site for primary osteomyelitis in adults?

A

Thoraco-lumbar spine

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9
Q

What are the common locations of osteomyelitis?

A

Thoraco-lumbar spine
Metaphysis of long bones- distal femur, proximal tibia, proximal humerus
Joint with intra-articular metaphysics- hip, elbow

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10
Q

What is the presentation of osteomyelitis?

A

Severe pain
Pyrexia
Decreased ROM and reluctant to move

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11
Q

What investigations are done for osteomyelitis?

A
FBC, U&amp;Es, CRP, ESR
Blood cultures x3
MRI= most sensitive
XR= no changes until ~2 weeks
Aspiration
Swab of open wounds
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12
Q

What is the management of osteomyelitis?

A

Antibiotics- IV or oral, 4-6 weeks

Surgery

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13
Q

What are the indications for surgery in osteomyelitis?

A

Collection in periosteum
Infection spread into joint
Atypical bacteria
Debridement of dead tissue

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14
Q

What are some complications of osteomyelitis?

A
Sepsis
MEtastatic infection
PAthological fracure
Septic arthritis
Altered bone growth 
Chronic osteomyelitis
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15
Q

What are th most common causes of chronic osteomyelitis?

A
Mixed organisms 
Staph aureus
E coli 
Proteus
Strep pyogenes
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16
Q

What is the management of chronic osteomyelitis?

A

Long term antibiotics

Eradicate surgically