Vastus intermedius muscle

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Vastus intermedius muscle
Muscles of lower extremity
Gray's	subject #128 471
Origin	antero/ lateral femur
Insertion	patellar ligament
Artery:	femoral artery
Nerve:	femoral nerve
Action:	extends leg

The Vastus intermedius (Crureus) arises from the front and lateral surfaces of the body of the femur in its upper two-thirds and from the lower part of the lateral intermuscular septum. Its fibers end in a superficial aponeurosis, which forms the deep part of the Quadriceps femoris tendon.

The Vastus medialis and Vastus intermedius appear to be inseparably united, but when the Rectus femoris has been reflected a narrow interval will be observed extending upward from the medial border of the patella between the two muscles, and the separation may be continued as far as the lower part of the intertrochanteric line, where, however, the two muscles are frequently continuous.

Additional images

Right femur. Anterior surface.

Right femur. Posterior surface.

Muscles of the iliac and anterior femoral regions.

Cross-section through the middle of the thigh.

External links

• LUC vasi
• Cross section at UV pembody/body18b
• PTCentral

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e List of muscles of lower limbs
ILIAC Region / ILIOPSOAS	psoas major/psoas minor - iliacus
BUTTOCKS	gluteals: (maximus, medius, minimus) - tensor fasciae latae lateral rotator group: piriformis - inferior gemellus - obturator internus - superior gemellus - quadratus femoris
THIGH	anterior compartment: sartorius - quadriceps (rectus femoris, vastus lateralis, vastus intermedius, vastus medialis) - articularis genu posterior compartment/hamstring: biceps femoris - semitendinosus - semimembranosus medial compartment: pectineus - obturator externus - gracilis - adductor (longus, brevis, magnus)
LEG	anterior compartment: tibialis anterior - extensor hallucis longus - extensor digitorum longus - peroneus tertius posterior compartment: superficial - calf/triceps surae (gastrocnemius, soleus) - plantaris posterior compartment: deep - tarsal tunnel (flexor hallucis longus, flexor digitorum longus, tibialis posterior) - popliteus lateral compartment: peroneus muscles (longus, brevis)
FOOT	dorsal - extensor hallucis brevis - extensor digitorum brevis plantar - 1st layer (abductor hallucis, flexor digitorum brevis, abductor digiti minimi) plantar - 2nd layer (quadratus plantae, lumbrical muscle) plantar - 3rd layer (flexor hallucis brevis, adductor hallucis, flexor digiti minimi brevis) plantar - 4th layer (dorsal interossei, plantar interossei)

de:Musculus vastus intermedius

nl:Musculus vastus intermedius ja:中間広筋

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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .