✅ Knee MRI Mastery/Chap 2.ACL and PCL

(Fig 2-D.22) Septic Arthritis And Osteomyelitis, Graft Infection after ACL Reconstruction

MSK MRI 2024. 3. 10. 00:29

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1️⃣ Graft Infection after ACL Reconstruction

  • Graft infection following Anterior Cruciate Ligament Reconstruction (ACLR) is rare, with an incidence rate of 0.1–0.9%. 
  • These infections are most commonly identified in the early postoperative phase.

2️⃣ MRI Signs of Graft Infection

  • Synovitis with Lamellated Synovium: Indicative of inflammation within the synovial membrane.
  • Bone Erosion, Periarticular Edema
    Bone Erosions of the Tunnels: A loss of cortical hypointensity in the tunnels can be observed, suggesting infection.
  • Sinus Tract Formation, Abscess Formation
  • Periarticular Fascial Edema
  • ACL graaft: Focal or diffuse increases in signal intensity on T2-weighted MRI images can indicate fibrinous exudates on the graft surface.

AJR 2010; 194:476–484

J Magn Reson Imaging. 2013 Oct;38(4):757-73 

Skeletal Radiology (2022) 51:1347–1364

 

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