Trigeminal nerve injuries may cause significant functional impairments. When trigeminal nerve injuries require surgical intervention, microsurgical repair has proven to be a reliable means of achieving functional sensory recovery. However, a considerable challenge arises when the distal nerve stump is unidentifiable or severely atrophied, inhibiting microsurgical repair. Recently, a bioresorbable hydrogel nerve cap has received Food and Drug Administration approval as a de novo device for the prevention of peripheral nerve neuromas. The purpose of this case report was to determine if the hydrogel nerve cap is a feasible option for the treatment of trigeminal neuroma when microsurgical repair is not possible.