Muscles of the Pelvic Floor Origin Insertion Pelvic Floor Muscle Coccygeus Pelvic surface of Side of the coccyx and the ischial spine lower sacrum Levator ani (LA) Posterior surface Anococcygeal
raphe of the body of the and coccyx pubis, arcus tendineus levator ani, ischial spine Layers of the Levator Ani Illiococcygeus Arcus tendineus Anococcygeal
raphe (IC) levator ani, and and the coccyx the ischial spine (clinically called the levator plate) Pubococcygeus Posterior aspect Passes backward along (PC) of the superior the puborectalis muscle pubic ramis and inserts into the anococcygeal
and the superior surface of the coccyx.
After subdermal infiltration at two sites anterior and posterior of the anal ring, the anococcygeal
ligament is deeply infiltrated with 5 ml; 8 - 10 ml are injected into both ischioanal spaces while withdrawing the needle to anaesthetise the deep nerve endings.