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.
Along with the adductor longus muscle and the sartorius muscle, this ligament forms the femoral triangle in the human thigh. The inguinal ligament is at the bottom of the inguinal canal, a passage in the abdominal wall through which the spermatic cord passes in men and the round ligament passes in women. This is an area where hernias can develop. Hernias occur when soft tissue pushes through a hole or weak spot in the area containing it.