Lower Extremity Muscle Atlas
Michael L. Richardson, M.D. source University of Washington, Radiology Department

Adductor Brevis
Adductor Longus
Adductor Magnus
Biceps Femoris-Long Head
Biceps Femoris-Short Head
Extensor Digitorum Longus
Flexor Digitorum Longus
Flexor Hallucis Longus
Gastrocnemius
Gluteus Maximus
Gluteus Medius
Gluteus Minimus
Gracilis
Iliopsoas
Obturator Externus
Obturator Internus
Pectineus
Peroneus Brevis
Peroneus Longus
Peroneus Tertius
Piriformis
Plantaris
Popliteus
Quadratus Femoris
Rectus Femoris
Sartorius
Semimembranosus
Semitendinosus
Soleus
Superior Gemellus
Tensor Fascia Lata
Tibialis Anterior
Tibialis Posterior
Vastus Intermedius
Vastus Lateralis
Vastus Medialis

Gracilis

Origin Inferior margin of pubic symphysis, inferior ramus of pubis, and adjacent ramus of ischium Insertion Medial surface of tibial shaft, just posterior to sartorius Action Flexes the knee, adducts the thigh, and helps to medially rotate the tibia on the femur Innervation Anterior division of obturator nerve Arterial Supply Obturator artery, medial circumflex femoral artery, and muscular branches of profunda femoris artery The medical illustrations contained in this online atlas are copyrighted © 1997 by the University of Washington.