Augmentation with an ovine forestomach matrix scaffold improves histological outcomes of rotator cuff repair in a rat model

Table 1 Histological grading system used to determine the rotator cuff healing outcomes

	Collagen fibre density	Collagen fibre orientation	Bone-tendon interface	Vascularity	Inflammation
0	None	None	0–24 % interdigitation	Abundant vascular network	Abundant inflammatory cells
1	Low	Disorganised fibres	25–49 % interdigitation	Moderate vascular network	Moderate inflammatory cells
2	Medium	Moderate alignment	50–75 % interdigitation	Minimal vascular network	Minimal inflammatory cells
3	High	Highly aligned	>75 % interdigitation	No vascular network	No inflammatory cells

ISSN: 1749-799X