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.
Ligaments of the Back of the Cervical and Upper Thoracic Spine 1. Supraspinous Ligament (flexion) 2. Ligamentum Nuchae (fibrous membrane). Ligaments are fibrous bands or sheets of connective tissue linking two or more bones, cartilages, or structures together.One or more ligaments provide stability to a joint during rest and movement. Excessive movements such as hyperâextension or hyperâflexion, may be restricted by ligaments.igaments are fibrous bands or sheets of connective tissue linking two or more bones, cartilages, or structures together. One or more ligaments provide stability to a joint during rest and movement. Excessive movements such as hyperâextension or hyperâflexion, may be restricted by ligaments.