Table 1.

International Cartilage Repair Society (ICRS) cartilage repair assessment tool

	Criteria	Points
Degree of defect repair	Level with surrounding cartilage	4
	75% repair of defect depth	3
	50% repair of defect depth	2
	25% repair of defect depth	1
	0% repair of defect depth	0
Integration to border zone	Complete integration with surrounding cartilage	4
	Demarcating border <1 mm	3
	3/4 of graft integrated, 1/4 with a notable border >1 mm width	2
	1/2 of graft integrated with surrounding cartilage, 1/2 with a notable border >1 mm	1
	From no contact to 1/4 of graft integrated with surrounding cartilage	0
Macroscopic appearance	Intact smooth surface	4
	Fibrillated surface	3
	Small, scattered fissure or cracks	2
	Several, small or few but large fissures	1
	Total degeneration of grafted area	0
Overall score	Grade I normal	12
	Grade II nearly normal	11-8
	Grade III abnormal	7-4
	Grade IV severely abnormal	3-1