Pelvic girdle laxity
One reason loose ligaments of pelvis.
Women with joint hypermobility
syndrome (jhs) have. If can touch thumb back & down to your wrist & with locked knees touch both palms to the floor, you likely have this variant of ligament (gristle in lay terms) tautness. Jhs found predominantly in women. As children
could back bridge & put feet behind neck. Jhs makes for easy childbirth & painful periods.