Type of stress incontinence attributable to (ISD) sphincter muscle incompetence. It is also known as poor or nonfuctioning urethral closure mechanism, or Type III stress incontinence.

failure of the sphincteric mechanisms of the urethra to generate adequate pressure to retain urine in the bladder.

A cause of stress urinary incontinence in which the urethral sphincter is unable to contract and generate sufficient resistance in the bladder, especially during activities that increase pressure on the bladder (e.g. coughing, laughing). ISD may be due to congenital sphincter weakness, such as myelomeningocele or epispadias, or it may be acquired from prostate cancer treatments, trauma, radiation therapy, or spinal cord injury.

Weakening of the urethra sphincter muscles. As a result of this weakening the sphincter does not function normally regardless of the position of the bladder neck or urethra. This condition is a common cause of stress urinary intinence.

This condition can cause stress incontinence and has been associated with a weak urethral sphincter that is unable to perform during stress maneuvers. The urethral sphincter is unable to produce tension in the bladder, and it does not contract to hold the urine. This deficiency has been linked to congenital sphincter weakness, spin bifida, prostatectomy, trauma, radiation therapy, or sacral cord lesions.

A condition in which the sphincter (sfingk-ter) muscles don't function as they should, causing urine to leak during movements that put pressure on the bladder

Inability of the urinary sphincter to close completely (see Urinary Incontinence).