Fibrin Glue: An Alternative Technique for Nerve Coaptation-Part II. Nerve Regeneration and Histomorphometric Assessment

 

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ABSTRACT

The results of nerve repair with fibrin glue and microsuture were evaluated in rat nerve transection models. Ninety Wistar-Furth rat median nerves were exposed, transected, and repaired in an end-to-end fashion with one of four substances/techniques: 1) human fibrin sealant (Quixil); 2) autologous graft and human fibrin sealant (Quixil); 3) bovine fibrin sealant (Tissucol); and 4) nylon microsuture, epineurial technique. Histologic analyses were performed at 3-, 6-, and 9-month postoperative intervals, and factors evaluated included: presence of inflammatory cells (i.e., macrophages and T cells); number of Schwann cells at the repair site; number of blood vessels; fibrosis; axonal regeneration; and fiber alignment. An additional group underwent histologic analysis at 3 weeks following repair with Quixil. Surgical time of repair was also measured.

Nerve repairs performed with fibrin sealants produced less inflammatory response and fibrosis, and better axonal regeneration and fiber alignment than nerve repairs performed with microsuture. In addition, the fibrin sealant techniques were quicker and easier to use. The authors conclude that fibrin sealant represents a good alternative technique to microsuture for peripheral-nerve repair.

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Lorraine OrnelasM.D. 

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