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Journal Article
Research Support, Non-U.S. Gov't
Experimental study of the characteristics of a novel mesh suture.
British Journal of Surgery 2015 September
BACKGROUND: The failure of sutures to maintain tissue in apposition is well characterized in hernia repairs. A mesh suture designed to facilitate tissue integration into and around the filaments may improve tissue hold and decrease suture pull-through.
METHODS: In vitro, the sutures were compared for resistance to pull-through in ballistics gel. In vivo, closure of midline laparotomy incisions was done with both sutures in 11 female pigs. Tissue segments were subsequently subjected to mechanical and histological testing.
RESULTS: The mesh suture had tensile characteristics nearly identical to those of 0-polypropylene suture. Mesh suture demonstrated greater resistance to pull-through than standard suture (mean(s.d.) 4.27(0.42) versus 2.23(0.48) N; P < 0.001) in vitro. In pigs, the ultimate tensile strength for repaired linea alba at 8 days was higher with mesh suture (320(57) versus 160(56) N; P < 0.001), as was the work to failure (24.6(14.2) versus 7.3(3.7) J; P < 0.001) and elasticity (128(9) versus 72(7) N/cm; P < 0.001) in comparison with 0-polypropylene suture. Histological examination at 8 and 90 days showed complete tissue integration of the mesh suture.
CONCLUSION: The novel mesh suture structure increased the strength of early wound healing in an experimental model. Surgical relevance Traditional sutures have the significant drawback of cutting and pulling through tissues in high-tension closures. A new mesh suture design with a flexible macroporous outer wall and a hollow core allows the tissues to grow into the suture, improving early wound strength and decreasing suture pull-through. This technology may dramatically increase the reliability of high-tension closures, thereby preventing incisional hernia after laparotomy. As suture pull-through is a problem relevant to all surgical disciplines, numerous additional indications are envisioned with mesh suture formulations of different physical properties and materials.
METHODS: In vitro, the sutures were compared for resistance to pull-through in ballistics gel. In vivo, closure of midline laparotomy incisions was done with both sutures in 11 female pigs. Tissue segments were subsequently subjected to mechanical and histological testing.
RESULTS: The mesh suture had tensile characteristics nearly identical to those of 0-polypropylene suture. Mesh suture demonstrated greater resistance to pull-through than standard suture (mean(s.d.) 4.27(0.42) versus 2.23(0.48) N; P < 0.001) in vitro. In pigs, the ultimate tensile strength for repaired linea alba at 8 days was higher with mesh suture (320(57) versus 160(56) N; P < 0.001), as was the work to failure (24.6(14.2) versus 7.3(3.7) J; P < 0.001) and elasticity (128(9) versus 72(7) N/cm; P < 0.001) in comparison with 0-polypropylene suture. Histological examination at 8 and 90 days showed complete tissue integration of the mesh suture.
CONCLUSION: The novel mesh suture structure increased the strength of early wound healing in an experimental model. Surgical relevance Traditional sutures have the significant drawback of cutting and pulling through tissues in high-tension closures. A new mesh suture design with a flexible macroporous outer wall and a hollow core allows the tissues to grow into the suture, improving early wound strength and decreasing suture pull-through. This technology may dramatically increase the reliability of high-tension closures, thereby preventing incisional hernia after laparotomy. As suture pull-through is a problem relevant to all surgical disciplines, numerous additional indications are envisioned with mesh suture formulations of different physical properties and materials.
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