What is the function of the pectineus muscle?

The pectineus muscle primarily functions to adduct and flex the thigh at the hip joint. As a hip flexor, it helps bring the thigh closer to the torso, while its adduction action draws the thigh inward toward the midline of the body. This dual role is particularly important during activities that involve bringing the legs together or moving the thigh forward, such as walking, running, or climbing stairs. The pectineus is a relatively short but crucial muscle located at the top of the inner thigh, serving as a key player in both hip flexion and adduction movements. Its position allows it to effectively contribute to these actions, making it vital for lower body mobility and stability.