Biologic Adjuncts for Surgical Repair
We cannot recommend for or against the use of allograft, autograft, xenograft, synthetic tissue, or biologic adjuncts in all acute Achilles tendon ruptures that are treated operatively.

Rationale
A systematic review failed to identify adequate evidence to make a recommendation for or against the use of allograft, autograft, xenograft, synthetic tissue, or biologic adjuncts in acute Achilles tendon ruptures that are treated operatively.

No studies addressed adjunctive augmentation with allograft, xenograft, or biologic adjuncts.

Three level II studies32, 37, 38 compared open repair alone and autograft augmentation. One level IV study39 compared patients treated with synthetic tissue augmentation to open repair alone. All four of these studies failed to demonstrate significant improvement in outcomes or complications.