Fig. 2.

Schematic of the test setup. Zero indicates the location of the hymen, with –/+ meaning above or below the hymen. S denotes sacrum; U: uterus; P: pubic bone; and Cx: cervix. A, B and C denote the servo actuator, force transducer, and surgical tenaculum, respectively; D the tripod; E the motor controller; and F the microprocessor. Vertical dashed-dotted line represents the initial location of the hymenal ring. This defines the origin (“0”) for the pelvic organ prolapse measurement system used to assess uterine position. The dashed long and short lines represent the CL and USL, respectively, under load. Note the 1 m long vertical suture suspending the weight of C © Luo, Ashton-Miller, and DeLancey.