Pectineus muscle

Last revised by Dr Daniel MacManus on 24 Mar 2021

The pectineus is a flat quadrangular muscle located at the anterior part of the upper medial aspect of the thigh. As it receives dual-innervation it can be classified as either within the medial compartment or the anterior compartment of the thigh.

Summary

  • origin: pectineal line (pecten pubis) and adjacent bone of pelvis
  • insertion: oblique line extending from base of lesser trochanter to linea aspera on posterior surface of femur
  • action: adducts and flexes thigh at hip joint
  • arterial supply: superficial part by medial circumflex femoral artery and deep part by the anterior branch of obturator artery
  • innervationfemoral nerve anteriorly, a branch of obturator nerve, the accessory obturator nerve, to the smaller posterior part of the muscle.

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