The pectineus is a muscle in the anterior compartment of the thigh. It is a flat, quadrangular-shaped muscle, which contributes to the floor of the femoral triangle. Attachments: Originates from the pectineal line of the pubis bone. It inserts onto the pectineal line on the posterior aspect of the femur, immediately inferior to the lesser trochanter. Actions: Adduction and flexion at the hip joint. Innervation: Femoral nerve (may also receive a branch from the obturator nerve). Blood supply: Medial circumflex femoral artery, femoral artery and obturator artery. By TeachMeSeries Ltd (2025) Fig 1The muscles of the anterior thigh. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article