modified Outerbridge grading system

Modified
Outerbridge grading of chondromalacia • Chondromalacia grading - Ganzer Fall bei Radiopaedia
Skalski, M. Chondromalacia grading. Case study, Radiopaedia.org. (accessed on 08 Nov 2022) https://doi.org/10.53347/rID-43787 • CC by-nc-sa 3.0 (modified)
Modified
Outerbridge grading of chondromalacia • Chondromalacia with premature osteoarthritis - Ganzer Fall bei Radiopaedia
Abdrabou, A. Chondromalacia with premature osteoarthritis. Case study, Radiopaedia.org. (accessed on 08 Nov 2022) https://doi.org/10.53347/rID-36484 • CC by-nc-sa 3.0 (modified)
Radiopaedia • CC-by-nc-sa 3.0 • de

The modified Outerbridge grading of chondromalacia is divided into four grades by MRI, typically using fat-saturated proton density sequences. This grading system was originally devised for arthroscopy initially for assessment of chondromalacia patellae, but then modified and extended for all chondral surfaces :

  • grade I
    • focal areas of hyperintensity with normal contour 
    • arthroscopically: softening or swelling of cartilage
  • grade II
    • blister-like swelling/fraying of articular cartilage extending to surface
    • arthroscopically: fragmentation and fissuring within soft areas of articular cartilage
  • grade III
    • partial-thickness cartilage loss with focal ulceration
    • arthroscopically: partial thickness cartilage loss with fibrillation (crab-meat appearance)
  • grade IV
    • full-thickness cartilage loss with underlying bone reactive changes
    • arthroscopically: cartilage destruction with exposed subchondral bone

This is not to be confused with the osteochondral injury staging system or osteochondritis dissecans surgical staging system.

Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Chondropathie Stadieneinteilung:
Chondromalacia
patellae
Wikipedia • CC BY-SA 3.0