Polyvinyl Alcohol Hydrogel Irradiated and Acetalized for Osteochondral Defect Repair: Mechanical, Chemical, and Histological Evaluation after Implantation in Rat Knees

Table 2

Percentage of the results according to criteria and attributed the scores.

Scores criteria groups (EGs)
absent (+) moderate (++) intensive (+++)
Evaluation criteria	Intensity of the presence (%)
	EG03	EG06	EG12	EG24
Granulation tissue (GT)	83 (+)	83 (+)	73 (+)	100 (+)
	17 (++)	17 (++)	27 (++)
Collagen fibers (CF)	50 (++); 50 (+++)	83 (+); 17 (++)	91 (++); 9 (+++)	37,5 (+); 50 (++); 12,5 (+++)
Mineralized bone matrix (MB)	17 (+)	17 (+)	27 (++)	50 (++)
	83 (++)	83 (++)	73 (+++)	50 (+++)
Neoformed bone tissue (NB)	17 (+); 83 (++)	25 (+); 50 (++); 25 (+++)	45 (++); 55 (+++)	62,5 (+); 25 (++); 12,5 (+++)
Collapse of neoformed tissue (CN)	100 (+)	100 (+)	100 (+)	100 (+)