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Table 1 Semiquantitative histologic grading scale

From: Spectrocolorimetric evaluation of repaired articular cartilage after a microfracture

Category Points
Cell Morphology  
   Normal 4
   Mostly hyaline cartilage 3
   Mixed hyaline and fibrocartilage 2
   Mostly fibrocartilage 1
   Some fibrocartilage, mostly nonchondrocytic cells 0
Reconstruction of subchondral bone  
   Normal 3
   Reduced subchondral bone reconstruction 2
   Minimal subchondral bone reconstruction 1
   No subchondral bone reconstruction 0
Matrix staining  
   Normal 4
   Slightly reduced 3
   Reduced 2
   Significantly reduced 1
   No staining 0
Filling of defect  
   100% 2
   50 or 150% (overfill) 1
   0% 0
Surface regularity  
   Regular, smooth 1
   Irregular 0
Bonding  
   Both graft edges bonded 2
   One graft edge bonded 1
   Neither edge bonded 0