Muscle Vastus Lateralis Vastus Lateralis Anatomical Structure C0224444 CDISC MUSCLE, VASTUS LATERALIS VASTUS LATERALIS MUSCLE C53073 A muscle in the quadriceps femoris muscle group lateral to the vastus intermedius; primary function is the extension of the femorotibial joint. Vastus Lateralis Vastus_Lateralis The largest muscle in the quadriceps femoris that is responsible for extending and stabilizing the knee. CDISC SDTM Terminology CDISC SDTM Anatomical Location Terminology CDISC SEND Terminology CDISC SEND Biospecimens Terminology