Musculoskeletal CT Appearances

Osteomyelitis CT Findings

• Pieces of sequestered bone (sequestra) which may have lucent rims
• May have periosteal thickening
• Decreased bone mineral density
• Bone degeneration (osteolytic destruction)
• Intramedullary gas
• Often mimics other bone diseases

Other Information About Osteomyelitis

Etiology:

• Usually caused by bacteria
• Typically occurs after trauma with open wounds, punctures, surgery, and sores
• Bacteria can also enter the body orifices such as the nose and mouth
• Patients who are immunocompromised are more susceptible

Epidemiology:

• Bimodal: typically presents in children and patients over age 50

Presentation:

• Bone pain
• Fever
• Chills
• Malaise
• Sweating
• Swelling
• Skin discoloration
• Warmth to the touch

Prognosis:

• Treatment is needed but after treatment, the prognosis is generally good

Related Pearls: Osteomyelitis