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The posterior division of the L4 root is the femoral nerve. The femoral nerve innervates the quadriceps femoris, a fourth of which is the rectus femoris. When the rectus femoris receives the signal that has traveled all the way from the medial side of the precentral gyrus, it contracts, extending the knee and flexing the thigh at the hip. [2]
The tensor fasciae latae (or tensor fasciæ latæ or, formerly, tensor vaginae femoris) is a muscle of the thigh. Together with the gluteus maximus, it acts on and is continuous with the iliotibial band, which attaches to the tibia. The muscle assists in keeping the balance of the pelvis while standing, walking, or running.
Sartorius muscle, Quadriceps (Rectus femoris, Vastus lateralis, Vastus intermedius and Vastus medialis), Articularis genus: Femoral nerve: Medial compartment (inner thigh/groin) Pectineus, [2] External obturator, Gracilis muscle, Adductors (longus, brevis, and magnus) Obturator nerve: Posterior compartment (back of the thigh)
Affected quadriceps (rectus femoris) in IBM. sIBM causes progressive muscle weakness. [1] How sIBM affects individuals is variable, including the age of onset (which generally varies from the forties upwards) and rate of progression. Because of this variability, there is no "textbook case". [13]
Of the anterior thigh muscles the largest are the four muscles of the quadriceps femoris: the central rectus femoris, which is surrounded by the three vasti, the vastus intermedius, medialis, and lateralis. Rectus femoris is attached to the pelvis with two tendons, while the vasti are inserted to the femur.
The gluteal muscles include the gluteus maximus, gluteus medius, gluteus minimus, and tensor fasciae latae.They cover the lateral surface of the ilium.The gluteus maximus, which forms most of the muscle of the buttocks, originates primarily on the ilium and sacrum and inserts on the gluteal tuberosity of the femur as well as the iliotibial tract, a tract of strong fibrous tissue that runs ...
The internal obturator muscle or obturator internus muscle originates on the medial surface of the obturator membrane, the ischium near the membrane, and the rim of the pubis. It exits the pelvic cavity through the lesser sciatic foramen. The internal obturator is situated partly within the lesser pelvis, and partly at the back of the hip-joint.
The external obturator muscle or obturator externus muscle (/ ˌ ɒ b tj ʊəˈr eɪ t ər ɪ k ˈ s t ɜːr n ə s /; OE) is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis. It is sometimes considered part of the medial compartment of thigh, [1] and sometimes considered part of the gluteal region. [2]