Sacrum sacrovertebral angle, an angle of 30 degrees from the horizontal plane that provides a useful marker for a sling implant procedure. The pelvic surface of the sacrum is concave from the top, and curved slightly from side to side. Its middle part is crossed by four transverse ridges, which correspond to the original planes of separation between the five sacral vertebrae. The body of the first segment is large and has the form of a lumbar vertebra; the bodies of the next bones get progressively smaller, are flattened from the back, and curved to shape themselves to the sacrum, being
Ver sacrum of the Roman people ("iussu populi"), then he specified a long series of unfavourable events and circumstances which were as a rule regarded as invalidating but would not be so as far as the present "votum" was concerned in the case they happen. The overall authenticity of the formula preserved in Livy's passage has been noticed by Dumézil while the exceptional theological and juridical prudence showed by Lentulus in ensuring that both fraud and ignorance of private citizens would not affect the validity of the "sacrum" and harm the Roman people has been remarked by Bouché-Leclercq. Ver sacrum Ver sacrum