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introductionstatpearls· Introduction· item NBK532309

The vastus lateralis (VL) is a unipennate muscle and a member of the anterior compartment of the thigh along with the sartorius, quadriceps femoris, rectus femoris (RF), vastus medialis (VM), and vastus intermedius (VI) muscles. The VL is 1 of the 4 component muscles of the quadriceps muscle group: rector femoris, vastus lateralis, vastus medialis, and vastus intermedius. The vastus lateralis is the largest component of the quadriceps muscle groups and is positioned laterally about the femur.[1][2]