Cartilage Evaluation

Grade 

Normal ACT

Gel type ACI

#1

#2

#3

Average

#1

#2

#3

#4

Average

I. Extent of coverage 

>75% surface area

4

3

4

3

3.3

4

3

3

4

3.5

50-75% surface area

3

25-50% surface area

2

<25% surface area

1

No new cartilage

0

II. Cartilage color

Normal

4

2

4

4

3.3

3.5

2.5

3.5

4

3.4

Yellow/Slight loss of translucency

2

Brow/moderate loss of translucency

0

III. Cartilage surface

Smooth

3

2

3

2

2.3

3

2

2.5

2

2.4

Irregular

2

Shallow clefts

1

Clefts to tidemark

0

IV. Regeneratedcartilage Thickness

100% of normal 

2

2

2

1

1.7

2

1.5

2

1.5

1.8

50-100% of normal

1

<50% of normal 

0

Total Score

13

9

13

10

10.7

13

9

11

12

11.2

Table 3: Histological evaluation of cartilage.