Medically reviewed by Kashif J. Piracha, MD Key Takeaways The iliopsoas muscle is the major flexor of the hip joint, made up of the iliacus and psoas major muscles.Pain in the iliopsoas muscle can be ...

When it comes to your hip flexors, you're likely focused (or, obsessed, in our case) on stretching them. However, with this critical muscle group, there's a key element you're probably neglecting: ...