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Anatomy in detail.

GLUTEUS MAXIMUS

gluteus maximus muscles highlighted on skeleton. Almost diamond shaped covering the buttocks.  wide and flat.

The largest skeletal muscles of the body, the left and right gluteus maximus muscles form the superficial muscle layer of the buttocks.

gluteus maximus keeping it simple

The gluteus maximus muscles attach to multiple structures, many more than the current standard description covers.

gluteus maximus attachments in detail. The pelvic bones, ligaments, fascia as listed above. Anatomy merges together, the many forms of connective tissue blending muscle and bone - it's everywhere so don't think of muscles as individual structures, rather contractile fibers within a web of connective tissue, the gluteus maximus being the largest muscles of the body - hands on buttocks feel them tighten.

Attachments:

  • The ilium of the pelvis. Posterior to the posterior gluteal line (attaching to a narrow, semi-lunar area with a rough surface), and the posterior superior iliac crest.
  • The sacrum (posterior inferior edge).
  • The coccyx (lateral sides of the posterior surface).
  • The aponeurotic fascia of the gluteus medius muscle.
  • The sacrotuberous ligament (posterior surface).
  • The tuberoiliac ligament (part of the long posterior (dorsal) sacroiliac ligament).
  • The thoraco-lumbar fascia. (Through its attachment to the raphe of the thoracolumbar fascia, the gluteus maximus is coupled to the ipsilateral multifidus muscle and to the contralateral latissimus dorsi muscle.)
  • The iliotibial tract. Three-quarters of the fibres form a superficial lamina (layer) which narrows and attaches between the two layers of the tensor fascia latae, forming part of the iliotibial tract. (a.k.a. iliotibial band.)
  • Gluteal tuberosity of the femur. Via an aponeurosis (thin sheet of strong connective tissue) formed from the deeper muscle fibres. (The gluteus maximus attaches between the attachment sites of the vastus lateralis and adductor magnus).

The gluteus maximus muscles cover a lot of complicated anatomy in the posterior pelvic region.

For example, many smaller muscles (including the piriformis, gluteus minimus and gluteus medius) and a complex web of connective tissues which are prone to stress and pain when the when the gluteus maximus are not fully utilised.

pelvis pictures

right buttock. the most superficial muscle the gluteus maximus has been removed to expose the many smaller muscles that lie underneath, it is some complicated anatomy with the underlying muscles prone to syndromes and strain when the covering gluteus maximus is adequately used.

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 OPTIMISING THE USE OF YOUR MUSCLES = BETTER HEALTH.

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