Sartorius muscle
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Body
was changed:
The sartorius muscle is the long obliquely oriented muscle of the anterior compartment of the thigh.
Summary
- origin: anterior superior iliac spine
- insertion: as part of the pes anserinus tendon, onto the medial superior tibia
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action
- primary: flexion of the hip and knee
- secondary: lateral rotation and weak abduction of the thigh (such as when sitting cross-legged)
- innervation: individual muscular branch from the femoral nerve
Gross anatomy
The sartorius muscle has long parallel fibres which run obliquely from lateral to medial down the thigh anterior to the quadriceps, in the same direction as the inguinal ligament and the fibres of the external oblique muscles. It forms the roof of the adductor canal in the lower medial thigh. It is pierced by two nerves:
- intermediate cutaneous nerve of the thigh
- infrapatellar branch of the saphenous nerve
History and etymology
Named after tailors (sartor is Latin for tailor), who would often sit cross-legged when working.
Fun fact
Sartorius is the longest muscle in the body.
-</ul><h4>Gross anatomy</h4><p>The sartorius muscle has long parallel fibres which run obliquely from lateral to medial down the thigh anterior to the <a href="/articles/quadriceps-muscles">quadriceps</a>, in the same direction as the <a href="/articles/inguinal-ligament">inguinal ligament</a> and the fibres of the <a title="External oblique muscle" href="/articles/external-oblique-muscle-1">external oblique muscles</a>. It forms the roof of the <a href="/articles/adductor-canal">adductor canal</a> in the lower medial thigh. It is pierced by two nerves:</p><ul>- +</ul><h4>Gross anatomy</h4><p>The sartorius muscle has long parallel fibres which run obliquely from lateral to medial down the thigh anterior to the <a href="/articles/quadriceps-muscles">quadriceps</a>, in the same direction as the <a href="/articles/inguinal-ligament">inguinal ligament</a> and the fibres of the <a href="/articles/external-oblique-muscle-1">external oblique muscles</a>. It forms the roof of the <a href="/articles/adductor-canal">adductor canal</a> in the lower medial thigh. It is pierced by two nerves:</p><ul>
Images Changes:
Image 1 Diagram (With labels) ( create )
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