title: Pedicled rectus abdominis muscle flap wrapped around the penis for enhanced urethral pressure: an experimental study in dogs.
abstract: OBJECTIVE
  It was the aim of this study to investigate the possibility of pedicled rectus abdominis muscle fascial flap wrapped around the penis for enhanced urethral pressure in dogs.
  
  
  METHODS
  Ten adult male Beagle dogs underwent a procedure in which surrounding tissue of the penis at the site of the bulbomembranous urethra was dissected and a pedicled rectus abdominis muscle fascial flap was wrapped around the penis. Profilometry of the urethral pressure was carried out before, during and after the operation in all dogs.
  
  
  RESULTS
  Before the operation, the mean maximal urethral pressure (MUP) was 48.9 +/- 11 cm H(2)O, and the mean MUP was 78.3 +/- 20.5 cm H(2)O after the penis was surrounded by a rectus muscle flap. There was a significant difference (t = 4.99, p = 0.0007). Ten weeks after the operation, the mean MUP was 88.3 +/- 22.4 cm H(2)O, which was significantly higher than that before the operation (t = 6.0584, p = 0.0002).
  
  
  CONCLUSIONS
  A pedicled rectus abdominis muscle fascial flap wrapped around the penis can raise the urethral pressure. This provided an experiment basis for treating male urinary incontinence with a pedicled rectus muscle flap.
authors.affiliation: Department of Urology, Jiaotong University, Sixth People's Hospital of Shanghai, Shanghai, People's Republic of China.
authors.forename: Ying-Long
authors.initials: YL
authors.lastname: Sa
authors.forename: Yue-Min
authors.initials: YM
authors.lastname: Xu
authors.forename: Zhang-Shun
authors.initials: ZS
authors.lastname: Liu
authors.forename: Chao
authors.initials: C
authors.lastname: Feng
authors.forename: Xion-Fang
authors.initials: XF
authors.lastname: Fei
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D004285:Dogs; D005500:Follow-Up Studies; D008297:Male; D010413:Penis / Q000601:surgery*; D011312:Pressure; D017568:Rectus Abdominis / Q000637:transplantation*; D013524:Surgical Flaps; D016896:Treatment Outcome; D014521:Urethra / Q000503:physiopathology*; D014549:Urinary Incontinence / Q000503:physiopathology / Q000601:surgery*; D014563:Urodynamics / Q000502:physiology*