Urethral anatomy

The male urethra is divided into two major segments, the anterior urethra and the posterior urethra. From proximal to distal, the urethra is initially eccentrically placed toward the dorsum of the penis, becoming centrally located at the fossa navicularis.

• The anterior urethra begins at the meatus of the penis and includes the fossa navicularis, the pendulous urethra, and the bulbar urethra. The pendulous urethra is delineated from the bulbar urethra at the suspensory ligament of the penis.
• The posterior urethra includes the membranous urethra, the prostatic urethra, and the bladder neck.