(Fig 5-E.02) Bone Erosions in Pyogenic Arthritis

https://youtu.be/07-Eawu3tbQ

 

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📌 Pyogenic Arthritis

✅ Early Detection

• MR imaging (T2 or STIR sequences) can detect early signs of septic arthritis, such as synovial inflammation and joint effusions. 
• Bone marrow edema, indicating inflammation, is frequently observed at this stage.

 

✅ Progression to Cartilage Destruction

• Progressing synovial inflammation leads to cartilage destruction and marginal erosions, often detectable within days in animal studies. 
• Joint space narrowing occurs as cartilage and cortical bone are destroyed.
• Conventional radiography better detects subtle joint space narrowing, while MR imaging is superior for visualizing erosions in the bare area of the joint.

 

✅ Subchondral Bone Changes

• Subchondral bone changes, such as edema, cyst formation, and destructive bone changes, occur with cartilage destruction, indicating the transition to subacute and chronic stages of septic arthritis.

 

✅ Chronic Stage Complications

• Chronic septic arthritis can result in osteomyelitis and severe bone destruction, leading to joint ankylosis and impaired mobility.

 

References

1. Magn Reson Imaging Clin N Am 12 (2004) 111–124

 

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#SepticArthritis, #BoneErosions, #MRImaging, #PyogenicArthritis, #CartilageDestruction, #SubchondralBone, #JointInfection, #Osteomyelitis, #Radiology, #BoneHealth