Iliopsoas is a term used to describe a group of muscles located in the hip region responsible for movement and stability. Several synonyms can be used to refer to the iliopsoas group, including the hip flexors, pelvic flexors, and inner thigh muscles. The hip flexors are responsible for flexing the hip joint, allowing you to lift your leg and move it forward. The pelvic flexors are involved in stabilizing the pelvis and spine, while the inner thigh muscles (adductors) help to bring the legs together. Overall, the iliopsoas muscles play an essential role in various movements and are vital for maintaining proper posture and balance.