What is posterior urethral reconstruction?

Posterior urethral reconstruction is a surgical procedure for males that is sometimes needed after trauma to the urethra. The urethra is the tube that carries urine out of the body from the bladder through the penis. The posterior urethra is the part that goes through the prostate and the external sphincter valve. The surgery is most often performed for urethral stricture (or narrowing) after trauma, such as a pelvic fracture.

The surgery may also be necessary for patients with strictures that occur following treatment for prostate cancer. In most cases, existing scar tissue is excised (removed) and an anastomosis (connection) is made between the healthy remaining part of the posterior urethra and the bulbar urethra (section between the sphincter area and base of the penis).

What are posterior urethral strictures?

Posterior urethral strictures are usually caused by injuries such as pelvic fracture. The trauma results in scar fibrosis (thickening) and narrowing or obliteration of the membranous urethra. These can similarly occur after treatment for prostate cancer, and have been associated with both radiation therapy and radical prostatectomy. Posterior urethral strictures result in significant obstruction to urinary flow, or the complete inability to urinate.

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