- Skeletal system
- Head muscles
- Neck muscles
- Muscles of upper limb
- Thoracic muscles
- Muscles of back
- Muscles of lower limb
- Pelvic muscles
- Muscles of thigh
- Anterior compartment
- Medial compartment
- Posterior compartment
- Muscles of leg
- Muscles of foot
- Blood vessels
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The pectineus (Latin: musculus pectineus) is a flat, quadrangular-shaped skeletal muscle that is situated in the superomedial aspect of the thigh. It stretches between the pubis of the hip bone and femur. Together with the adductor brevis, adductor longus, adductor magnus and gracilis muscles, it forms the medial compartment of the thigh muscles. All mentioned muscles provide thigh adduction. Therefore, they belong to the muscle group called the thigh adductors.
|Origin||Pectineal line on superior pubic ramus|
|Insertion||Pectineal line and linea aspera of femur|
|Action||Thigh flexion, thigh adduction, thigh external rotation, stabilization of pelvis|
|Innervation||Femoral nerve (L2 - L4), obturator nerve (L2, L3)|
|Blood supply||Obturator and medial circumflex femoral arteries|
The pectineus muscle originates from the pectineal line (pecten pubis) located on the superior ramus of the pubic bone.
Fibers of the pectineus muscle pass downward and insert on the pectineal line and linea aspera of the femur.
The pectineus muscle provides thigh flexion, thigh adduction and thigh external (lateral) rotation at the hip joint. Also, it stabilizes the pelvis.
The pectineus is innervated by the branches of the femoral (L2 - L4) and obturator (L2, L3) nerves. Both nerves arise from the lumbar plexus.
The pectineus muscle receives arterial blood supply from the medial circumflex femoral and obturator arteries. The first artery arises from the deep femoral artery, while the latter is a branch of the internal iliac artery.