Anatomy and Cell Biology 2221 Lecture Notes - Lecture 16: External Obturator Muscle, Internal Obturator Muscle, Greater Sciatic Notch
17 Nov 2018
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Document Summary
These images are looking from a post. view of the deep hip. Attachments: lat. process of sacrum and gluteal surface of ilium (around greater sciatic notch) to sup. border of greater trochanter (femur) This image to the right is showing an mri of bilateral piriformis muscles. Here we are concerned w/ inflammation of piriformis as it can compress the sciatic nerve (light blue circle)= pain, numbness, tingling. Seen a lot in sports w/ excessive use of glutes or trauma. ** 12% of people have a common fibular branch passing through the piriformis. They have an increased risk of developing this. Attachments: ischial spine to med. surface of greater trochanter of the femur. Attachments: obturator membrane to medial surface of greater trochanter. Nerve: nerve to obturator internus and sup. gemellus. Attachments: ischial tuberosity to med. surface of greater trochanter. Attachments: obturator foramen and membrane to trochanteric fossa (femur) Nerve: nerve to quadratus femoris and inf. gemellus.
