Neourethra: Rationale, Surgical Technique and Indications
In women it is the urethra as a whole— about 4 cm long—that acts as a sphincteric unit providing enough outlet resistance to maintain urinary continence. Authorities agree that no anatomical entity that may be called a “sphincter” can be isolated and dissected. The urethral muscular tube with its two coats—one, inner longitudinal and the other, outer semi-circular—provides sphincteric function. The outer muscular coat of the urethra originates in the outer longitudinal coat of the bladder, the fibres of which loop around the urethra: urethral sphincteric function is attributed to these abundant circularly orientated fibres. Myogenically, neurologically and histologically, this muscular sphincteric unit is identical to the detrusor and is, in fact, in direct continuity with it.
KeywordsUrinary Incontinence Bladder Neck Urethral Catheter Bladder Base Vaginal Septum
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