Hip bone Hip bone The hip bone (os coxa, innominate bone, pelvic bone or coxal bone) is a large flat bone, constricted in the center and expanded above and below. In some vertebrates (including humans before puberty) it is composed of three parts: the ilium, ischium, and the pubis. The two hip bones join at the pubic symphysis and together with the sacrum and coccyx (the pelvic part of the spine) comprise the skeletal component of the pelvis – the pelvic girdle which surrounds the pelvic cavity. They are connected to the sacrum, which is part of the axial skeleton, at the
Sciatic nerve block the two branches of the sciatic nerve. It is done above the knee on the posterior leg where the sciatic nerve starts splitting into the common peroneal and tibial nerves. Sciatic nerve block A sciatic nerve block is a nerve block that uses local anesthetic to achieve analgesia in the leg. The block works by affecting the sciatic nerve and is used for surgeries at or below the knee. The sciatic nerve is located in the gluteus maximus muscle, where the block is performed. The sciatic nerve can be blocked at different locations. At the popliteal fossa, the sciatic nerve