1 Lasts 5 years.  Potential hormone side effects. There's no estrogen, so typically Mirena is less noticeable than oral birth control (the pill). The way the hormone is released via Mirena is local, so typically women don't notice changes.
The lesser sciatic foramen is an opening (foramen) between the pelvis and the back of the thigh.The foramen is formed by the sacrotuberous ligament which runs between the sacrum and the ischial tuberosity and the sacrospinous ligament which runs between the sacrum and the ischial spine.he lesser sciatic foramen has the following boundaries: 1  Anterior: the tuberosity of the ischium. 2  Superior: the spine of the ischium and sacrospinous ligament. 3  Posterior: the sacrotuberous ligament.
ligamentum arteriosum (anatomy). FREE subscriptions for doctors and students... click hereYou have 3 open access pages. The ligamentum arteriosum is a fibrous band that runs between the superior surface of the origin of the left pulmonary artery and the inferior surface of the arch of the aorta.ts relations include: 1  posterosuperior: arch of aorta. 2  inferomedial: pulmonary trunk. 3  laterally: 4  vagus nerve. 5  recurrent laryngeal nerve which hooks around the ligamentum arteriosum.