Improved methods for the surgical repair of a damaged or severed nerve are described. The improvement includes covering the surgically repaired nerve or a damaged neurilemma with at least one of an amniotic fluid and a construct, or replacing the damaged neurilemma with the construct prior to wound closing during the surgery. The construct contains an allograft having at least one layer of amnion and chorion tissues, and a shape adapted for enclosing a damaged or severed nerve or for covering or replacing the damaged neurilemma during the surgical repair. The products and methods improve the performance of the nerve surgery, e.g., by reducing inflammation, inhibiting fibrosis, scarring, fibroblast proliferation, post-operative infection while also promoting more rapid healing of damaged or traumatized nerve structures.
