joints

Chondromalacia - MRI grading by modified Noyes System

The modified Noyes system was published in 2009. It is a modification of the Noyes grading system for the purpose of MRI grading. The original Noyes grading system was based on arthroscopic findings.

Grade Description
Grade 0 normal cartilage
Grade 1 increased T2 signal intensity of morphologically normal cartilage not oriented at 55° to the external magnetic field
Grade 2A

Chondromalacia - MRI grading by modified Outerbridge System

The modified Outerbridge system was published in 2006. It differs from the Outerbridge system in grade I only, the definition of which was adjusted to reflect changes on MRI, because the original system was based on arthroscopic findings.

Grade Description
Grade 0 normal cartilage
Grade 1 signal intensity alterations with an intact surface of the articular cartilage compared with the surrounding normal cartilage
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