Table 1. Criteria described by Turner et al.[12] for microscopic evaluation of tendon healing grading system.

Histological tendon healing grading system
Grade	Points	Description of tendon healing
Excellent	0	Reestablishment of tendon continuity with smooth epitenon
Good	1	Apposition of wound margins with regular intratendinous collagen and epitenon disorganization, but no significant adhesions to the epitenon
Fair	2	Apposition of wound margins with irregular intratendinous collagen, often interrupted by adhesions to the epitenon.
Poor	3	Complete deterioration of the repair site due to adhesions