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Pudendal nerve innervation can transform a neo-sphincter into an original anal sphincter–like muscle in animal studies. The results led us to clinical trials of a neo-anus with a pudendal nerve anastomosis (NAPNA). No long-term results in a series have been reported.From 1995 to 2003, a neo-anus was reconstructed by using an inferior portion of the gluteus maximum muscle with a pudendal nerve anastomosis...
Background: An ideal reinforcing neo-sphincter should be innervated by the pudendal nerve to work in coordination with the external anal sphincter. The aim of this study was to create a skeletal muscle innervated by the pudendal nerve without inducing external anal sphincter morbidity. Methods: Seven dogs were used. On the right side of each dog, the distal end of the transected nerve innervating...
Background. We have previously studied functional perineal colostomy that used skeletal muscle with pudendal nerve anastomosis (PNA) following anorectal resection in an animal model. In that study the neosphincter reconstructed with PNA achieved the proper functions of the external anal sphincter resulting in a satisfactory defecatory condition. This study was a preliminary step before applying this...
Background. The aim was to reconstruct the functional anus by using a transposed skeletal muscle with pudendal nerve anastomosis (PNA) after anorectal resection.Methods. Transposition of the biceps femoris muscle (BFM) with PNA around the perineal colostomy was performed in 22 dogs. In the control group (n=11) the BFM with its own nerve used. Evaluation was done at 3 to 5 months after the operation...
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