Gluteus minimus muscle

From Wikipedia, the free encyclopedia - View original article

Gluteus minimus
Gluteus minimus muscle07.png
Gluteus minimus muscle (shown in red). Posterior view.
Posterior Hip Muscles 1.PNG
The gluteus minimus and nearby small gluteal muscles (posterior view)
Latinmusculus glutaeus minimus
Gray'sp.475
OriginFrom area in between the anterior gluteal line and inferior gluteal line of Gluteal surface ilium, under gluteus medius.
InsertionGreater trochanter of the femur
Arterysuperior gluteal artery
Nervesuperior gluteal nerve (L4, L5, S1 nerve roots)
ActionsWorks in concert with gluteus medius: abduction of the hip; preventing adduction of the hip. Medial rotation of thigh.
Antagonistlateral rotator group
Anatomical terms of muscle
 
Jump to: navigation, search
"Gluteus minimus" redirects here. For the Devonian fossil, see Gluteus minimus (fossil).
Gluteus minimus
Gluteus minimus muscle07.png
Gluteus minimus muscle (shown in red). Posterior view.
Posterior Hip Muscles 1.PNG
The gluteus minimus and nearby small gluteal muscles (posterior view)
Latinmusculus glutaeus minimus
Gray'sp.475
OriginFrom area in between the anterior gluteal line and inferior gluteal line of Gluteal surface ilium, under gluteus medius.
InsertionGreater trochanter of the femur
Arterysuperior gluteal artery
Nervesuperior gluteal nerve (L4, L5, S1 nerve roots)
ActionsWorks in concert with gluteus medius: abduction of the hip; preventing adduction of the hip. Medial rotation of thigh.
Antagonistlateral rotator group
Anatomical terms of muscle

The gluteus minimus (or glutæus minimus), the smallest of the three gluteal muscles, is situated immediately beneath the gluteus medius.

Origin and insertion[edit]

Muscles of the gluteal and posterior femoral regions with gluteus minimus muscle highlighted.

It is fan-shaped, arising from the outer surface of the ilium, between the anterior and inferior gluteal lines, and behind, from the margin of the greater sciatic notch.

The fibers converge to the deep surface of a radiated aponeurosis, and this ends in a tendon which is inserted into an impression on the anterior border of the greater trochanter, and gives an expansion to the capsule of the hip joint. It is also a local stabilizer for the hip.

Relations[edit]

A bursa is interposed between the tendon and the greater trochanter.

Between the gluteus medius and gluteus minimus are the deep branches of the superior gluteal vessels and the superior gluteal nerve.

The deep surface of the gluteus minimus is in relation with the reflected tendon of the rectus femoris and the capsule of the hip joint.

Action[edit]

The gluteus medius and gluteus minimus abduct the thigh, when the limb is extended, and are principally called into action in supporting the body on one limb, in conjunction with the Tensor fasciæ latæ.

Their anterior fibers, by drawing the greater trochanter forward, rotate the thigh inward, in which action they are also assisted by the Tensor fasciæ latæ.

Additionally, with the hip flexed the gluteus medius and minimus externally rotate the thigh. With the hip extended, the gluteus medius and gluteus minimus internally rotate the thigh.[1][contradictory]

Variations[edit]

The muscle may be divided into an anterior and a posterior part, or it may send slips to the piriformis, the superior gemellus or the outer part of the origin of the vastus lateralis.

Pathology[edit]

References[edit]

  1. ^ Pratt, N. Clinical Musculoskeletal Anatomy. CBLS: Marietta, OH 2004.

Additional images[edit]

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.