Posted by CB on August 10, 2011 at 12:10:35:
In Reply to: Gluteal region II posted by isz on August 09, 2011 at 20:22:55:
: Gluteal Region - Part II
: 1. Discuss the origin and course of the medial femoral circumflex artery.
The medial femoral circumflex artery originates from the medial, posterior side of the deep femoral artery (or the femoral artery). The artery dives deep between the psoas major and pectineus and between the obturator externus and adductor brevis. It divides into the acetabular branch here- which provides the hip joint. The artery appears between the quadratus femoris and adductor magnus (so it would be posterior to the adductor magnus?) and divides into the ascending and and transverse branch. The ascending branch turns superioly to the trochanteric fossa (within the neck of the femur to anastomose with glueal and lateral circumflex in the neck) and the transverse which supplies the cruciate anastomosis. The transverse branch of the medial femoral circumflex wraps posteriorly around the greater trochanter of the femur.
: 2. Discuss the origin and course of the lateral femoral circumflex artery. The lateral femoral circumflex artery originates from the deep femoral artery at the root (where it splits from the femoral artery. It lies posterior to the rectus femoris and sartorius and divides into three branches. the ascending branch follows the intertrochanteric line along and lateral to the hip joint, anastomoses with the gluteal and ascending branch of the medial femoral circumflex. The descending branch supplies the vastus lateralis. Trhe important one that we learned, the transverse branch passes laterally to the vastus intermedius before piercing the vastus lateralis, and then winding around the anterior femur, just distal to the greater trochanter.
: 4. Name all the muscles/ligaments associated with the ischial spine.
Sacrospinous ligament and superior gemellus.
: 5. Name all the muscles/ligaments associated with the ischial tuberosity. Quadratus femoris, inferior gemellus, adductor magnus, sacrotuberous ligament, and all three muscles of the posterior thigh compartment. (Biceps femoris, semitendinosus, semimembranosus)