A Quick Lesson in Hip Flexor Anatomy

There are 4 primary areas of the smaller muscles that make up the overall hip flexor muscles: the abdomen/hip area, the front of the thigh, the gluteus, and the inside of thigh/groin.

( Illiopsoas).

Psoas Major/Minor.

The Psoas Major is a tapered muscle that runs along the front of your pelvic bone down to your hip joint; it is probably the most crucial of the hip flexor muscles. While it does help raise the leg up, it likewise greatly helps in external rotation (moving your leg far from your center of gravity). The Psoas Minor likewise assists in this function, but just about 50% of individuals have this muscle! This is likewise one of the greatest threat muscles for a hip flexor injury due to its’ main position.

Illiacus Muscle.

The Illiacus Muscle lies right next to the Psoas, however it is a much smaller sized, triangular muscle. The Illiacus is really crucial for 2 types of movements, the very first: open-chained (like when you are standing), it assists to raise the leg/knee forward. In closed-chained positions (believe resting), it can assist raise the upper half of the upper body up, like in a sit-up. Because of the heavy loads frequently placed on the Illiacus it is often a source of hip flexor discomfort.

Muscles on Front of Thigh.

Rectus Femoris.

This is exactly what most people would call their quadriceps muscle, however it is actually part of the hip flexor muscles. It clearly is involved in hip flexion, however it also is the main muscle when extending the leg (knee flexion) in a standing position, like kicking a soccer ball. Keep in mind that it is not the main muscle for this same motion in a seated position when the hip is currently in a bent position, it has restricted power, so other muscles are usage.


The Sartorius is a long thin muscle that runs from the hip joint all the way to the knee over top of the thigh. It helps in 4 significant movements: Flexion of the knee and hip, rotation of your leg, and adduction (pushing your legs together). Because of its’ numerous facets of motion, it primarily plays a support role to other hip flexor muscles.

Gluteal Part.

Tensor Fasciae latae.

The Tensor Fasciae latae is mainly an adductor and supporting muscle. In numerous activities, strolling, running, snow activities, and many more, it is greatly utilized to stabilize the leg and support the knee.

Inner Thigh Muscles.

These 4 hip flexor muscles all have incredibly similar functions for the scope of this article. The Pectineus, Adductor longus and brevis, and the Gracilis all lie in exactly what the majority of people would consider the groin area (best hip flexor exercises).They are accountable mainly for moving the leg laterally, although they support in the flexion of the hip as well.

As you can see, there are several hip flexor muscles that work together to help with hip flexion while satisfying other functions too.

Details is power; you owe it to yourself and your body’s health to comprehend your injuries. If you have the ability to understand injuries, you can diagnose them quicker, treat them much better, and healing to the highest possible levels.

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