[Efficacy and safety of botulinum toxin in external urethral sphincter by transperineal way guided transrectal ultrasound and electromyography on chronic urinary retention due to spinal cord injury].

Background: To assess the efficacy and safety of botulinum toxin for sphincter hypertonia in patients with spinal cord injury (SCI).

Patients And Methods: Non-control clinical trial on men with neurogenic detrussor-sphincter dyssynergia (DSD) due to SCI. 100 IU of Botox® were injected through the transperineal way on external urethral sphincter under electromyography and transrectal ultrasound guidance.