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63550 Gynaecology & Obstetrics

Which of the following is true regarding relaxation of pelvic joints at term in pregnancy

AIs permanent and not accentuated in subsequent pregnancies.
BAllows for an increase in transverse diameter of the mid - pelvis.
CResults in marked mobility of pelvis at term because of downward gliding movement of the sacroiliac joint.
DDisplacement of sacroiliac joint increase outlet diameters by 1.5 to 2.0 cm in dorsal lithotomy position. (Correct Answer)