MR imaging of infectious processes of the knee

Area of Science:

• Orthopedics
• Radiology
• Infectious Diseases

Background:

• Knee infections arise from various sources including hematogenous spread, contiguous infection, direct inoculation, and post-surgical complications.
• Infections can affect the soft tissues, joints, and bones of the knee, caused by diverse pathogens like bacteria, fungi, parasites, and viruses.

Purpose of the Study:

• To highlight the utility of Magnetic Resonance (MR) imaging in diagnosing and evaluating infectious processes around the knee.
• To emphasize MR imaging's role in surgical planning for debridement and drainage of knee infections.

Main Methods:

• Review of MR imaging characteristics in various knee infections.
• Discussion of MR imaging's application in differentiating infected tissues and assessing infection extent.
• Emphasis on MR imaging's value in complex cases like chronic posttraumatic osteomyelitis and post-surgical infections.

Main Results:

• MR imaging provides excellent soft-tissue contrast, enabling clear delineation of cellulitis, abscesses, septic arthritis, and osteomyelitis.
• The technique accurately assesses the full extent of infection, crucial for effective management.
• MR imaging is particularly beneficial in evaluating chronic and post-surgical knee infections.

Conclusions:

• MR imaging is an indispensable tool for the comprehensive evaluation of infectious processes affecting the knee.
• Its ability to visualize infection extent and characteristics facilitates targeted surgical intervention, improving treatment efficacy.