[Female urinary stress incontinence and insufficient closing pressures. Results of perineal sphincter electromyography].

Prior to a clinical evaluation of the efficacy of sphincter and perineal rehabilitation in female urinary stress incontinence due to striated sphincter incompetence, and in order to define the cause, 32 patients with stress incontinence with very low urethral closing pressure on urodynamic studies, underwent a perineal electromyographic investigation Three types of sphincteric lesion were detected: an isolated lesion of the striated muscle fibres, an isolated neurogenic lesion of the internal pudendal nerve and a neurogenic lesion of the internal pudendal nerve in a context of sensorimotor polyneuropathy.