<prompt> Smallest diameter of pelvis is?Interspinous diameterTrue conjugateDiagonal conjugateInteuberous diameter  <response>: Interspinous diameter REF: Clinical Obstetrics 10th edition by S. Gopalan, Sarala Jain, Vanita Page 4, Manual of Obstetrics, 3e by Shirish N Daftary Page 11-12, Manual Of Obstetrics 2Nd Edition by Daftary Page 16-18 Interspinous diameter transverse diameter of midpelvis 10 cm or somewhat more is the smallest diameter of pelvis REF: Williamss obstetric 22nd edition page 34 