Human Urine-Derived Stem Cells: Potential for Cell-Based Therapy of Cartilage Defects

Table 2

The semiquantitative scale for grading the natural healing articular cartilage: subcategories and their individual respective scores.

Feature	Score
Filling of defect
100%	0
75%	1
50%	2
25%	3
0%	4
Reconstitution of osteochondral junction
Yes	0
Almost	1
Not close	2
Matrix staining
Normal	0
Reduced staining	1
Significantly reduced staining	2
Faint staining	3
No stain	4
Cell morphology
Normal	0
Mostly hyaline and fibrocartilage	1
Mostly fibrocartilage	2
Some fibrocartilage but mostly nonchondrocytic cell	3
Nonchondrocytic cell only	4