|
Category | Score |
|
Nature of predominant tissue | |
Cell morphology | |
Hyaline cartilage | 4 |
Incompletely differentiated mesenchyme | 2 |
Fibrous tissue or bone | 0 |
Safranin O staining of the matrix | |
Normal or nearly normal | 3 |
Moderate | 2 |
Slight | 1 |
None | 0 |
Structural characteristics | |
Surface regularity | |
Smooth and intact | 3 |
Superficial horizontal lamination | 2 |
Fissure 25–100% of the thickness | 1 |
Severe disruption | 0 |
Structural integrity | |
Normal | 2 |
Slight disruption, including cysts | 1 |
Severe disintegration | 0 |
Thickness | |
100% of normal adjacent cartilage | 2 |
50–100% of normal cartilage | 1 |
0–50% of normal cartilage | 0 |
Bonding to adjacent cartilage | |
Bonded at both ends of graft | 2 |
Bonded at one end or partially at both ends | 1 |
Not bonded | 0 |
Freedom from cellular changes of degeneration | |
Hypocellularity | |
Normal | 3 |
Slight | 2 |
Moderate | 1 |
Severe | 0 |
Chondrocyte clustering | |
No clusters | 2 |
<25% of the cells | 1 |
25–100% of the cells | 0 |
Freedom from degeneration changes in adjacent cartilage | |
Normal cellularity, no clusters, normal staining | 3 |
Normal cellularity, mild clusters, moderate staining | 2 |
Mild or moderate hypocellularity, slight staining | 1 |
Severe hypocellularity, poor or no staining | 0 |
|