Understanding Urethral Strictures: Causes, Symptoms & Catheterization Options

If you or someone you care for has been told they have a urethral stricture, you already know that catheterization can become a significant challenge. A stricture — a narrowing of the urethra caused by scar tissue — can turn what should be a routine self-care task into something painful, unreliable, and in some cases, impossible with standard equipment.

This guide explains what urethral strictures are, how they develop, and crucially, how they affect catheterization — including what to look for when choosing a catheter designed to navigate them safely.

What Is a Urethral Stricture?

The urethra is the tube that carries urine from the bladder out of the body. In men, it runs through the prostate gland and the length of the penis. In women, it is much shorter. A urethral stricture occurs when scar tissue forms along the inner wall of the urethra, narrowing its diameter and restricting urine flow.

Strictures are far more common in men than in women due to the length and anatomy of the male urethra. They can affect any segment — the bulbar urethra (the most common location), the penile urethra, or the prostatic urethra — and can range from a single short narrowing to multiple complex segments.

What Causes a Urethral Stricture?

The underlying cause is always scar tissue formation, but what triggers that scarring varies:

• Prior urethral trauma — a straddle injury (falling onto a bicycle crossbar, for example) is a classic cause of bulbar urethral stricture
• Catheterization injury — repeated traumatic catheterization or the use of a catheter that is too large or too rigid can cause urethral scarring over time
• Pelvic fracture — significant pelvic trauma can disrupt the posterior urethra
• Prior urethral surgery — procedures including hypospadias repair, prostate surgery, or TURP can all result in stricture formation
• Infection — historically, gonorrhoea was a leading cause; today, other urethral infections can contribute
• Lichen sclerosus — a chronic inflammatory skin condition that can affect the penile urethra and meatus
• Idiopathic (unknown cause) — in a meaningful proportion of cases, no clear cause is identified

Recognizing the Symptoms

Many patients first notice a stricture through changes in their urinary stream or increasing difficulty with catheterization. Common symptoms include:

• A weak, slow, or interrupted urinary stream
• Difficulty starting urination (hesitancy)
• Sensation of incomplete bladder emptying
• Increased effort required during catheter insertion
• Pain or burning during catheterization or urination
• Catheter resistance or inability to advance past a certain point
• Recurrent urinary tract infections (often a sign of incomplete bladder emptying)

How Strictures Are Diagnosed

Diagnosis typically involves one or more of the following:

• Uroflowmetry — a non-invasive test measuring the speed and volume of urination
• Urethrogram (RUG/VCUG) — X-ray imaging with contrast dye to visualize the urethra and identify narrowings
• Cystoscopy — direct visual inspection of the urethra and bladder with a thin camera scope
• Ultrasound — sometimes used to assess stricture length

Treatment Options

Treatment depends on the location, length, and complexity of the stricture, as well as the patient's overall health and history:

• Urethral dilation — gradual widening of the stricture using progressively larger dilators; often provides temporary relief but high recurrence rates
• Direct vision internal urethrotomy (DVIU) — endoscopic incision of the stricture; effective for short, simple strictures but recurrence is common in longer or complex cases
• Urethroplasty — open surgical reconstruction; the most durable treatment, with success rates exceeding 85–90% for experienced surgeons
• Ongoing catheter management — for patients who are not surgical candidates or who wish to defer surgery, consistent intermittent catheterization can manage symptoms and prevent complete obstruction

Catheterization with a Urethral Stricture: Why Catheter Design Matters

For patients managing a stricture with intermittent catheterization — whether as primary management or alongside other treatments — catheter selection is not a trivial choice. The wrong catheter can:

• Create a false passage — a new channel forced through the urethral wall beside the true lumen
• Worsen existing scarring through repeated micro-trauma
• Make catheterization increasingly difficult over time
• Cause pain and bleeding that reduces patient compliance with CIC schedules

Traditional rigid-tipped catheters, including some Coudé designs, carry elevated risk in the presence of complex strictures because they apply directional force rather than conforming to the anatomy. A catheter with a soft, flexible, atraumatic tip is better suited to navigating a narrowed urethra — it finds the path of least resistance rather than pushing against it.

The IQ Catheter: Designed for Difficult Anatomy

The IQ Catheter, manufactured by Manfred Sauer GmbH in Germany, was specifically engineered for patients with urethral strictures and difficult anatomy. Its flexible, round tip deflects when it meets resistance rather than creating force, while the firm catheter body ensures reliable advancement. A full-length hydrophilic coating activates with water to create a lubricious surface across the entire catheter length.

IQ Catheter Canada is the exclusive Canadian distributor. Healthcare professionals can request complimentary samples for patients on their behalf — or patients can ask their urologist or continence nurse about the IQ Catheter at their next appointment.