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Sartorius

The Sartorius is a two joint muscle and so is weak when the knee is flexed and the hip is flexed at the same time. It works better during single movements.

Origin

• Area between the ASIS (Anterior Superior Iliac Spine) and AIIS (Anterior Inferior Iliac Spine)

Insertion

• Anterior part of the medial condyle of the tibia

Actions

• Flexion of the hip
• Flexion of the knee
• External rotation of the hip as it flexes the hip and knee
• Abducts the hip

Innervation

• Femoral nerve

Daily uses

• Sitting in a cross-legged position

How can I stretch it?

• Hip flexor stretch
• Standing quad stretch
• Laying quad stretch

How can I strengthen it?

• Seated hip flexion
• Standing hip flexion
• Knee extension machine