What is the Pectineus?
The pectineus is a small but important muscle in the upper inner part of your thigh, right where your leg meets your pelvis. If you place your hand high on your inner thigh near the groin and lift your knee up toward your chest, you’ll be very close to where it works. It attaches from the front of the pelvis to the upper part of the thigh bone, giving it a strong mechanical advantage for controlling hip movement.