Sartorius Muscle
It is one of the anterior thigh muscles and is also known as the tailor’s muscle. It crosses the thigh from lateral to medial side across the anterior surface. It has got its own distinct facial sheath. It lies superficially in anterior thigh compartment. Sartorius is also the longest muscle in the body.
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Soleus Muscle Gastrocnemius Muscle Adductor Muscle Semitendinosus Muscle Biceps Femoris Muscle Iliotibial Tract Gluteus Medius Muscle Gluteus Maximus Muscle Peroneus Longus Muscle Extensor Digitorum Longus Muscle Tibialis Anterior Muscle Pectineus Muscle Vastus Lateralis Muscle Vastus Medialis Muscle Rectus Femoris Muscle Sartorius Muscle Gracilis Muscle Adductor Longus Muscle
Sartorius Muscle
SHAPE
It is a narrow, long and ribbon like thin muscle.
ORIGIN AND INSERTION
Sartorius arises from ASIS (anterior superior iliac spine) and the upper part of the notch located inferior to ASIS. After traversing the whole length of thigh, it gets inserted to upper part of medial side of tibia near the tuberosity of tibia.
NERVE SUPPLY
Sartorius is innervated by the femoral nerve (L2, L3), the largest branch of lumbar plexus.
BLOOD SUPPLY
It is supplied by muscular branches of the femoral artery.
FUNCTIONS
Sartorius does not produce strong actions and acts synergistically with other muscles to play its role. Its functions involve two joints, the hip joint and knee joint. It causes the flexion of thigh at hip joint and flexion of leg at knee joint. In addition, it also abducts the thigh at hip joint. It assists in medial rotation of leg, when the leg is flexed.
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