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(Last Updated On: March 2, 2019)

Pectineus: Origin, Insertion, Action, Innervation

Origin: Pectineal line of the pubis and a narrow area of the superior pubic ramus below it
Insertion:A vertical line from the lesser trochanter to the linea aspera
Actions: Assists with flexion and adduction of the thigh
Innervation: Anterior division of the femoral nerve (L2, L3)
Blood Supply:Branches from the internal iliac and profunda femoris arteries

Pectineus Muscle Origin, Insertion, Actions, Innervation

Pectineus Actions With Agonists and Antagonists

Primary Actions of the Pectineus

1. Because of size and location, the pectineus does not have a primary action

Secondary Actions of the Pectineus:

1. Assists with flexion of the thigh at the hip

  Agonists:

  • Psoas major
  • Iliacus

  Antagonists:

  • Gluteus maximus
  • Semitendinosus
  • Semimembranosus
  • Biceps femoris (long head)
  • Adductor magnus (posterior)

Rectus femoris, sartorius, and psoas minor also assist with flexion of the thigh at the hip.

2. Assists with adduction of the thigh at the hip

Agonists:

  • Adductor Longus
  • Adductor Brevis
  • Adductor Magnus

Antagonists:

  • Gluteus Maximus (upper fibers)
  • Gluteus Medius
  • Gluteus Minimus

Gracilis also assists with adduction of the thigh at the hip.

For more information see:

Pectineus Muscle: Groin and Pelvic Pain

 

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