Vastus lateralis muscle
Vastus Lateralis Muscle
The Vastus Lateralis Muscle is one of the four muscles that make up the quadriceps femoris group, located in the anterior compartment of the thigh. It is the largest and most powerful part of the quadriceps femoris.
Anatomy[edit | edit source]
The Vastus Lateralis originates from the upper part of the femur, and it extends down the lateral side of the thigh to the patella, or kneecap. It is responsible for extending the knee and stabilizing the patella.
Origin[edit | edit source]
The Vastus Lateralis originates from the upper part of the intertrochanteric line, the base of the Greater Trochanter, the lateral lip of the Linea Aspera, the lateral intermuscular septum and the gluteal tuberosity.
Insertion[edit | edit source]
The Vastus Lateralis inserts into the Patellar tendon along with the other muscles of the quadriceps femoris.
Function[edit | edit source]
The primary function of the Vastus Lateralis is to extend the knee. It also plays a role in stabilizing the patella and the knee during walking or running.
Clinical Significance[edit | edit source]
The Vastus Lateralis is often used as an injection site for intramuscular injections. It is also a common site for muscle biopsy due to its accessibility and size.
See Also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD
