KIN 2320 Lecture Notes - Lecture 19: Greater Sciatic Foramen, Lesser Sciatic Foramen, Internal Obturator Muscle

• School: University of Manitoba
• Department: Kinesiology
• Course: KIN 2320
• Professor: Steven R.Passmore

Document Summary

Supplies no muscles in gluteal region, supplies all muscle in posterior compartment of thigh. Innervates gluteus medius, gluteus minimus, and tensor fasciae latae. Innervates hip joint, inferior gemellus and quadratus femoris. Leaves pelvis through greater sciatic foramen inferior to piriformis; enters gluteal region; descends deep to biceps femoris; bifurcates into tibial and common fibular nerves at apex of popliteal fossa. Leaves pelvis through greater sciatic foramen superior to piriformis; runs between glutes medius and minimus. Leaves pelvis through greater sciatic foramen inferior to piriformis; divides into several branches. Leaves pelvis through greater sciatic foramen deep to sciatic nerve. Enters gluteal region through greater sciatic foramen inferior to piriformis, descends posterior to ischial spine, enters lesser sciatic foramen; passes to obturator internus. Popliteal fossa: is a mostly flat fat-filled diamond shaped space posterior to the knee joint. All-important vessels and nerves from the thigh to the leg pass through this fossa. Lateral and medial heads of the gastrocnemius, inferolaterally respectively.