Vastus lateralis muscle
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| Vastus lateralis muscle | |
|---|---|
 | |
| Muscles of lower extremity | |
| Vastus lateralis | |
| Gray's | subject #128 470 |
| Origin | Greater trochanter, Intertrochanteric line, and Linea aspera of the Femur |
| Insertion | Patella and Tibial tuberosity via the Patellar ligament |
| Artery: | femoral artery |
| Nerve: | femoral nerve |
| Action: | Extends and stabilizes knee |
| Antagonist: | Hamstring |
The Vastus lateralis (Vastus externus) is the largest part of the Quadriceps femoris. It arises by a broad aponeurosis, which is attached to the upper part of the intertrochanteric line, to the anterior and inferior borders of the greater trochanter, to the lateral lip of the gluteal tuberosity, and to the upper half of the lateral lip of the linea aspera; this aponeurosis covers the upper three-fourths of the muscle, and from its deep surface many fibers take origin.
A few additional fibers arise from the tendon of the Glutæus maximus, and from the lateral intermuscular septum between the Vastus lateralis and short head of the Biceps femoris. The fibers form a large fleshy mass, which is attached to a strong aponeurosis, placed on the deep surface of the lower part of the muscle: this aponeurosis becomes contracted and thickened into a flat tendon inserted into the lateral border of the patella, blending with the Quadriceps femoris tendon, and giving an expansion to the capsule of the knee-joint.
Additional images
 Right femur. Anterior surface. |
 Muscles of the iliac and anterior femoral regions. |
 Cross-section through the middle of the thigh. |
 Muscles of the gluteal and posterior femoral regions. |
 The femoral artery. |
See also
External links
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 As such, some of the information contained herein may be outdated.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.
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nl:Musculus vastus lateralis ja:外側広筋 sv:Vastus lateralis
Acknowledgement and Attribution Regarding Sources of Content
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 .
