Audio LecturePro Feature Pectineus 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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 (2026) Fig 1The muscles of the anterior thigh. 3D ModelPro Feature 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 Frequent questions What is the pectineus muscle? The pectineus is a flat, quadrangular muscle located in the anterior compartment of the thigh, forming part of the floor of the femoral triangle. It plays a crucial role in hip movement. What are the attachments of the pectineus muscle? The pectineus originates from the pectineal line of the pubis and inserts onto the pectineal line on the posterior side of the femur, just below the lesser trochanter. This positioning allows it to effectively contribute to hip actions. What actions does the pectineus muscle perform? The pectineus muscle is responsible for adduction and flexion at the hip joint. These movements are essential for various activities, including walking and climbing. What is the innervation of the pectineus muscle? The pectineus is primarily innervated by the femoral nerve, although it may also receive additional innervation from a branch of the obturator nerve. This dual innervation can influence its function. What is the blood supply to the pectineus muscle? The pectineus muscle receives its blood supply from the medial circumflex femoral artery, femoral artery, and obturator artery. This vascular support is vital for muscle health and function. Rate This Article