Abstract

One opportunity to reduce hernia occurrence and recurrence rates (currently estimated to be 30% at 10 years postoperatively) is by enhancing the ability of hernia meshes to anchor into tissue to prevent mesh migration, mesh contraction, and mesh tearing away from tissue. To address this, we developed a novel moderate-weight, macroporous, polypropylene mesh (termed the T-line mesh) with mesh extensions to optimize anchoring. We examined the physical properties, biomechanical performance, and biocompatibility of this novel mesh versus a predicate mesh anchored with #0-suture. The physical properties of the T-line mesh and predicate mesh were measured using American Society for Testing and Materials (ASTM) standards. Meshes were implanted into a swine hernia model and harvested after one day to determine anchoring strength of the meshes in the perioperative period. A separate group was implanted into a swine hernia model and harvested at 30 days and 90 days for semiquantitative histological analysis of biocompatibility. T-line mesh physical properties were similar to commonly used moderate-weight meshes in thickness and areal density. The T-line mesh outperformed the predicate mesh in all mechanical testing (P < 0.05). In the perioperative period, the T-line mesh was ∼275% stronger (P < 0.001) than the standard of care. Histological analysis of biocompatibility demonstrated no significant difference between the T-line mesh and predicate mesh (P > 0.05). The T-line mesh is a novel hernia mesh that outperforms a predicate mesh in mechanical and biomechanical performance testing while exhibiting similar biocompatibility. The T-line mesh has the potential to reduce hernia occurrence and recurrence caused by mechanical failure.

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