Muscles of the Anterior Thigh Muscle Innervation Origin Insertion Action Nerve Root 1 Vastus lateralis femoral iliotibial line/greater trochanter/lateral linea aspera lateral patella 2 Vastus medialis femoral iliotibial line/medial linea aspera/supracondylar line medial patella 3 Vastus intermedius femoral Proximal anterior femoral shaft patella Muscles of the Posterior Thigh 1 Biceps(long head) tibial medial ischial tuberosity fibular head.lateral tibia 2 Biceps(short head) peroneal lat linea aspera/lat intermuscular septum lateral tibial condyle 3 Semitendinosus tibial Distal med. Ischial tuberosity anterior tibial crest 4 Semimembranosus tibial proximal lat ischial tuberosity oblique popliteal ligament/posterior capsule/posterior, medial tibia/popliteus
