The body has three main hip flexors- iliopsoas, sartorius and rectus femoris.
Anatomy of the Rectus Femoris Muscle (Hip Flexor)
3.Understanding hip flexors -injury prevention-football-hip Soccer 11
What Are the Hip Flexors? - Tom Morrison
Hip stretches, How to stretch hip flexors
Are the iliopsoas muscles also known as 'hip flexors'? - Quora
Your Poor Quadriceps Muscles
The Painful Relationship of the Psoas and Rectus Femoris
Your Poor Quadriceps Muscles
Lesson 13: Hip Flexors and Anterior Thigh Muscles
Hip flexor stretches for psoas, iliacus, sartorius and tensor fascia latae
30 Iliopsoas Muscle Transfer for Paralysis of the Hip Abductors