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Table 1 Histomorphometric scoring criteria for the assessment of fibrocartilage zone formation at the tendon–bone interface

From: Comparison of cortical versus cancellous bone fixation in tendon-to-bone healing with a rat trans-calcaneal suture model for Achilles tendon sleeve avulsion

Tendon bonding to adjacent tissues

0% of the interface

0

 < 25% of the interface

1

25–49% of the interface

2

50–74% of the interface

3

75–99% of the interface

4

100% of the interface

5

Fibrocartilage zone formation

None (0% of interface)

0

Slight (< 50% of interface)

1

Moderate (> 50% of the interface, average thickness < 100 μm)

2

Substantial (> 50% of the interface, average thickness 100–200 μm)

3

Massive (> 50% of the interface, average thickness 200–500 μm)

4

Excellent (100% of the interface, average thickness > 500 μm)

5