Urethral Injury
Urethral Injury - Related Videos
05:09
Urethral Stricture Induction Followed by Buccal Mucosa Graft Urethroplasty in a Rat Model
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Cited by 3 •
2023
In the present protocol, a urethral stricture induction was developed in Wistar rats, followed by urethral reconstruction with a buccal mucosa graft. A retrograde urethrogram and laser Doppler assessment were performed, validating urethral reconstruction (after stricture formation) and graft placement.
07:42
Nerve-sparing Mid-urethral Obstruction (NeMO) in Female Small Rodents
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Cited by 7 •
2017
Traditional modeling of partial bladder outlet obstruction in rodents is fraught with animal mortality. A denervation injury from dissection around the proximal urethra and bladder neck is also of major concern. We developed and evaluated a safe and reliable mid-urethral obstruction model, avoiding the shortcomings of the traditional model.
09:22
In Vivo Telemetry to Record Long-Term Cardiovascular Parameters, Temperature, and Activity in Spinal Cord Injury Rat Models
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2026
This article presents a step-by-step protocol for the placement of an in vivo telemetric implant in the descending aorta of rats, allowing continuous and long-term monitoring of cardiovascular parameters, core body temperature, and animal activity before and after severe high-thoracic spinal cord injury.
07:28
Controlled Cervical Laceration Injury in Mice
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Cited by 17 •
2013
A novel technique to create a reproducible in vivo model of cervical spinal cord laceration injury in the mouse is described. This technique is based on spine stabilization by fixation of the cervical facets and laceration of the spinal cord using an oscillating blade with an accuracy of ±0.01 mm.
04:19
A Mouse Model of Single and Repetitive Mild Traumatic Brain Injury
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Cited by 16 •
2017
Athletes absorb several hundred mild traumatic brain injuries (mTBI)/concussions every year; however, the consequence of these on the brain is poorly understood. Therefore, an animal model of single and repetitive mTBI that consistently replicates clinically relevant symptoms provides the means to advance the study of mTBI and concussion.
FAQs
Blunt trauma, penetrating trauma, pelvic fracture, and instrumentation can each disrupt the urethral wall, but the surrounding circumstances influence how urine and blood escape into nearby tissues. This distinction matters clinically because the mechanism of injury contributes to the initial assessment and helps guide decisions about urinary diversion, endoscopic management, or surgical repair.
Healing may produce inflammation followed by scar formation within or around the disrupted urethral wall. As scar tissue develops, it can narrow the urethral lumen, creating a urethral stricture that interferes with urine passage. This delayed consequence explains why evaluation of the injury must consider both the immediate disruption and possible effects during recovery.
Blood at the meatus, difficulty urinating, and urinary retention are important warning signs. Together, these findings can indicate that the urethra has been disrupted or that urine passage is obstructed. Recognizing them helps clinicians move promptly toward appropriate evaluation and avoid treating the urinary problem as a routine difficulty with urination.
When the urethral wall is torn or disrupted, urine and blood may leave the normal urinary passage and enter surrounding tissues. The resulting local exposure can be accompanied by inflammation, while later scar formation may narrow the lumen. These linked effects connect the initial injury with both immediate tissue consequences and delayed obstruction.
Retrograde urethrography is used to evaluate the urethra before catheterization in a suspected injury. This sequence helps clinicians assess whether the urethral passage has been disrupted before attempting to pass a catheter. The imaging step therefore supports safer evaluation and informs the choice among urinary diversion, endoscopic management, and surgical repair.
The choice depends on the injury findings identified during evaluation, including evidence of urethral disruption and the resulting urinary problem. Urinary diversion can address the immediate need to manage urine flow, whereas endoscopic management or surgical repair may be selected for definitive treatment. Clinical signs and retrograde urethrography help organize this decision.