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Urinary Bladder

Urinary Bladder

The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...

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Related Experiment Video

Updated: Apr 15, 2026

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

Published on: August 9, 2012

Objective long-term evaluation after bladder autoaugmentation with rectus muscle backing.

Miroslav L Djordjevic¹, Vojkan Vukadinovic¹, Borko Stojanovic²

¹School of Medicine, University of Belgrade, Belgrade, Serbia; University Children's Hospital, Belgrade, Serbia.

The Journal of Urology

|March 31, 2015

Summary

This summary is machine-generated.

Bladder autoaugmentation using rectus muscle backing significantly increases bladder volume and improves voluntary voiding in pediatric patients with neurogenic bladder. This safe, minimally invasive procedure offers long-term benefits for select cases.

Keywords:

neurogenic reconstructive surgical procedures rectus abdominis urinary bladder urination urothelium

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Area of Science:

Pediatric Urology
Surgical Innovation
Reconstructive Surgery

Background:

Neurogenic bladder, often caused by myelomeningocele, leads to small bladder capacity and poor compliance.
Traditional bladder augmentation methods can be invasive and associated with complications.
Rectus muscle backing offers a novel approach to bladder augmentation.

Purpose of the Study:

To evaluate the long-term efficacy and outcomes of bladder autoaugmentation with rectus muscle backing.
To assess the impact of this technique on bladder volume and voiding function.
To determine the suitability of this procedure for pediatric patients.

Main Methods:

A cohort of 23 pediatric patients (16 girls, 7 boys) aged 4-13 years underwent bladder autoaugmentation with rectus muscle backing.
The procedure involved detrusorectomy and hitching the bladder urothelium to rectus muscles.
Indications included neurogenic bladder secondary to myelomeningocele, tethered cord, or sacral agenesis.

Main Results:

Significant long-term increase in bladder volume was observed in all patients (median 419 ml postoperatively vs. preoperative).
Voluntary voiding was achieved in 14 patients, with minimal post-void residual urine.
Nine patients utilized clean intermittent catheterization, with only 4 fully reliant on it.

Conclusions:

Detrusorectomy with rectus muscle hitch and backing is a safe, simple, and minimally invasive extraperitoneal procedure.
The technique demonstrates sustained effectiveness in improving bladder capacity and function.
This surgical approach is indicated for select pediatric patients without anterior abdominal wall anomalies.