<prompt> Shoest diameter of true pelvis amongst the following is: September 2008True conjugateDiagonal conjugateInterspinous diameterInteuberous diameter  <response>: Ans. C: Interspinous Diameter True conjugate-between the midpoint of the sacral promontory to the inner margin of the upper border of symphysis pubis-11 cm Diagonal conjugate-between the lower border of symphysis pubis to the midpoint on the sacral promontory-12 cm Interspinous Bispinous diameter-between the tip of two ischial spines-10.5 cm lnteuberous diameter-between inner borders of ischial tuberosities-11 cm 