Table 2.

MRI evaluation of repair tissue 3 years after the combination therapy, by number and percentage

Variables	Number (percentage)
1. Degree of defect repair and filling of the defect
Complete	5 (62.5)
Hypertrophy	1 (12.5)
Incomplete
>50% of the adjacent cartilage	1 (12.5)
<50% of the adjacent cartilage	1 (12.5)
Subchondral bone exposed	0 (0)
2. Integration to border zone
Complete	6 (75.0)
Incomplete
Demarcating border visible (split-like)	1 (12.5)
Defect visible
<50% of the length of the repair tissue	1 (12.5)
>50% of the length of the repair tissue	0 (0)
3. Surface of the repair tissue
Surface intact	6 (75.0)
Surface damaged
<50% of repair tissue depth	1 (12.5)
>50% of repair tissue depth or total degeneration	1 (12.5)
4. Structure of the repair tissue
Homogenous	4 (50.0)
Inhomogenous or cleft formation	4 (50.0)
5. Signal intensity of the repair tissue
Dual T2-FSE
Isointense	6 (75.0)
Moderately hyperintense	1 (12.5)
Markedly hypointense	1 (12.5)
6. Subchondral Lamina
Intact	6 (75.0)
Non-intact	2 (25.0)
7. Subchondral bone
Intact	6 (75.0)
Non-intact	2 (25.0)
8. Adhesions
No	8 (100.0)
Yes	0 (0)
9. Effusion
No	8 (100.0)
Yes	0 (0)