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Quadratus femoris
Posted: Feb 22 2022
C

Quadratus Femoris - Everything You Need To Know - Dr. Nabil Ebraheim

Plays: 1038

Video Description

Dr. Ebraheim’s educational animated video describes the anatomy of the quadratus femoris muscle.
The quadratus femoris muscle originates from the lateral margin of the ischial tuberosity.
Insertion: It inserts into the quadrate tubercle on the intertrochanteric crest between the greater and lesser trochanter.
Action: the quadratus femoris is one of the six external rotators of the hip. It also helps adduct the thigh.
Innervation: the nerve from the sacral plexus called “nerve to quadratus femoris” (L5, S1). It supplies the quadratus femoris and the inferior gemellus muscles. The sciatic nerve crosses over the quadratus femoris muscle.
Six short external rotators of the hip:
1-Piriformis muscles.
2-Superior gemellus muscle.
3-Obturator internus muscle.
4-Inferior gemellus muscle.
5-Obturator externus muscle.
6-Quadratus femoris muscle.
The nerve to quadratus femoris innervates two muscles; inferior gemellus & quadratus femoris.
The medial femoral circumflex artery (MFCA) courses anterior to the superior edge of the quadratus muscle. The MFCA can be identified in the space between the quadratus femoris muscle (superior edge of the quadratus femoris muscle) and the inferior gemellus. Quadriceps femoris muscle detatchment from the femur during the posterior approach to the hip may cause profuse bleeding. This bleeding most likely occurs from a branch of the medial femoral circumflex artery.

Follow me on twitter:
https://twitter.com/#!/DrEbraheim_UTMC



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