Psoas

psoas -- 2016
Psoas

Pictured above is the psoas. It is one of the hip flexor muscles, and pulls your leg up toward your spine (like when you lift your leg), or your spine toward your leg (like when you sit up). It is BY FAR the most influential muscle in the body. You can't move your hip or lower back in any direction without using this muscle. 80% of all adults over 18 years of age have some form of back pain. If you aren't checking the psoas for excessive tension you are missing one of the most significant links to proper back function.

The muscles are layered, showing how some of the muscles are covered by the others. All of the muscles are see-through so that you can appreciate the location and size of each muscle relative to the others.

Individual hip, lower back & thigh muscles you might be interested in: (any inactive links will be live soon)

Click here for a list of all the muscles.

Click here to see the hip flexor muscles as a group.

Muscle that crosses the hip/lower back joint and crosses the hip/thigh joint (attaches to the spine and the femur)

  1. Psoas


Muscles that attach to the hip and the spine and/or ribs

  1. Rectus Abdominus
  2. External Abdominal Oblique
  3. Internal Abdominal Oblique
  4. Transverse Abdominus
  5. Latissimus Dorsi
  6. Iliocostalis Lumborum
  7. Longissimus Thoracis
  8. Quadratus Lumborum
  9. Multifidi


Muscles that attach to the hip and the thigh bone (femur)

  1. Iliacus
  2. Rectus Femoris
  3. Tensor Fasciae Latae
  4. Sartorius
  5. Gracilis
  6. Adductor Magnus
  7. Adductor Longus
  8. Adductor Brevis
  9. Pectineus
  10. Gluteus Maximus
  11. Gluteus Medius
  12. Gluteus Minimus
  13. Piriformis
  14. Superior Gemellus
  15. Obturator Internus
  16. Inferior Gemellus
  17. Obturator Externus
  18. Quadratus Femoris
  19. Biceps Femoris
  20. Semitendonosis
  21. Semimembranosis


Good luck working out those tight knots.

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