Experimental Study on the Biomechanical Properties of Pelvic Floor and Uterine Wall for the Rabbit

A series of experiments are performed to study the biomechanical properties of pelvic floor and uterine wall tissue for the rabbits between the delivery and the un-delivery groups. 14 New Zealand female big white rabbits were divided into delivery group and un-delivery group. Specimens of the pelvic floor and uterine wall tissue were tested by tension experiment to determine their stress-strain relationship, the creep and the stress relaxation test. The instrument used is WDW4100 almighty test machine controlled by PC. Some important biomechanical properties, such as the ultimate strength, the maximum stiffness, the stress-strain relationship and the viscoelasticity, were obtained for the obturator internus, the gemellus tendon and uterine wall tissue. It is concluded that such properties of the pelvic floor and uterine wall tissue for the delivery group and the un-delivery group are difference obviously, which is helpful for the clinical study on human pelvic floor and the development of obstetrics, gynecology and urology.