Table 1.

Keywords Used for Each Database

Database	Searching Strategy
PubMed	(“Peripheral Nerve Injury” OR “Nerve Adhesion” OR “Nerve Injury”) AND (“Nerve Adhesion Barrier” OR “Anti-Adhesion” OR “Nerve Barrier” OR “Anti-Adhesion Barrier”)
Ovid.MEDLINE	Peripheral Nerve Injuries/ Peripheral Nerve Injuries/ or Nerve Injury.mp. Hyaluronic Acid/ or Hydrogels/ or Tissue Adhesions/ or Biocompatible Materials/ or Adhesion barrier.mp. or Cellulose, Oxidized/ Nerve adhesion barrier.mp. 1 OR 2 3 OR 4 5 AND 6
Ovid.EMBASE	Nerve regeneration/ or Peripheral Nerve Injury.mp. or peripheral nerve/ or nerve injury/ or peripheral nerve injury Tissue adhesion/ or Nerve Adhesion Barrier.mp. Adhesion barrier/ 2 or 3 1 and 4
Cochrane Library	MeSH descriptor: [Peripheral Nerves] explode all trees MeSH descriptor: [Peripheral Nerve Injuries] explode all trees Adhesion Barrier #1 OR #2 #3 AND #4