Lower limb: Anterior compartment of the thigh Compartment Muscles Action Innervation Anterior Iliopsoas Flexion of thigh at the hip Femoral nerve Different action, look below (L2-L4) Quadriceps femoris: Main action – extension of the Vastus lateralis leg at the knee Vastus intermedialis Vastus medialis Rectus femoris Sartorius Pectineus* this compartment in terms of nerve supply Medial aDductors magnus Hip aDductors Obturator nerve (Lumbar aDductor longus plexus) aDductor brevis Blood supply : obturator artery obturator externus* gracialis Posterior Biceps femoris Extend at the hip Sciatic nerve (L4-L3) Semitendinosus Flex at the knee Semimembranosus General Action: extension of the leg at the knee
Compartment Muscles Action Innervation Anterior Iliopsoas Different action, look below Quadriceps femoris: Vastus lateralis Vastus intermedialis Vastus medialis Rectus femoris Sartorius Pectineus* this compartment in terms of nerve supply Flexion of thigh at the hip Main action – extension of the leg at the knee Femoral nerve (L2-L4) Medial aDductors magnus aDductor longus aDductor brevis obturator externus* gracialis Hip aDductors Obturator nerve (Lumbar plexus) Blood supply : obturator artery Posterior Biceps femoris Semitendinosus Semimembranosus Extend at the hip Flex at the knee Sciatic nerve (L4-L3) Lower limb: Anterior compartment of the thigh General Action: extension of the leg at the knee
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