Related Experiment Video
Updated: Jun 13, 2026

A Novel Surgical Technique in a Sheep Model for Suburethral Graft Implantation
Published on: June 20, 2025
Anterior vaginal wall prolapse: a randomized controlled trial of SIS graft versus traditional colporrhaphy
Paulo Cezar Feldner1, Rodrigo Aquino Castro, Luiz Antonio Cipolotti
1Section of Urogynecology and Pelvic Surgery, Department of Gynecology, Universidade Federal de São Paulo, Rua dos Otonis, 601 (Vila Clementino), 04025-001, São Paulo, SP, Brazil. pfeldner@alfa.epm.br
Introduction And Hypothesis:
This study seeks to compare the small intestine submucosa (SIS) graft with traditional colporrhaphy (TC) for surgical treatment of anterior vaginal prolapse.
Methods:
Subjects were randomly assigned to SIS (n = 29) or to TC (n = 27) preoperatively and outcomes analyzed at 12 months postoperatively. The primary outcome was the absence of POP-Q stage >or= II prolapse, and secondary outcome was improvement in quality of life. Data were compared with independent samples or paired Student's t test.
Results:
SIS group had 86.2% anatomic cure compared to 59.3% in TC (p = 0.03). SIS improved point Ba measurement significantly (-1.93 cm versus -1.37 cm, p = 0.02). Both operations significantly improved quality of life, although there were no differences between the groups. We observed a greater number of complications in the SIS group, with no infections or erosion.
Conclusions:
SIS repair improved point Ba significantly. However, there were no differences observed in quality of life between the techniques.

