Table 3.

Histologcial assessment table

Item	Description	Score
Organization structure of knee articular cartilage	integrity	2
	minor defect	1
	structural failure	0
Cartilage matrix	compact	2
	loose	1
	Extremely sparse	0
Glycosaminoglycan content	abundant	2
	lacked	1
	rare	0
Organization of chondrocytes	orderly and uniform distribution	2
	partially organized	1
	arranged disorderly	0
Inflammation	none	2
	mild	1
	severe	0
Cartilage superficial layer	Integrity	2
	minor ulceration or erosion	1
	severe destroy	0
Necrosis	none	2
	minor	1
	large area	0