"Procoelous" vertebrae are anteriorly concave and posteriorly convex. The conus may occur anteriorly or posteriorly. From this nerves extend anteriorly and posteriorly. These cells lengthen anteriorly and posteriorly to encircle the primary fibers. The external iliac arteries pass the inguinal ligament posteriorly and inferiorly. These are wide anteriorly, and narrow to become acutely angled posteriorly. They pull the scapula toward the mid-dorsal line, anteriorly, and posteriorly. Expansion also tends to happen more anteriorly than posteriorly. The pouch opens anteriorly, and two lateral pockets extend posteriorly when young are present. Stress on the hip causes the epiphysis to move posteriorly and medially. It is leaf-shaped, pointed at the back (posteriorly), and wide in the front (anteriorly). They pass posteriorly behind the posterior cruciate ligament. The greater tubercle is a large, posteriorly placed projection that is placed laterally. The female sacrum is also more curved posteriorly. A widely arched furcula is present with slender and posteriorly curved clavicular rami.