Hip flexors

In human anatomy, the hip flexors or Iliopsoas are a group of muscles passing through the pelvis that act to flex the hips and rotate the lower spine. Lying deep within the torso, these are some of the least known skeletal muscles, and their action is often confused with that of the rectus abdominis. For example, even though the sit-up is used as an exercise for the abs, it actually works the hip flexors.

The hip flexors include:

• Psoas major muscle
• Psoas minor muscle
• Iliacus muscle