Adductor brevis muscle

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Adductor brevis muscle
Anterior Hip Muscles 2.PNG
The adductor brevis and nearby muscles
Gray344.png
Structures surrounding right hip-joint. (Adductor brevis at upper right.)
Details
Origin Anterior surface of the inferior ramus and body of the pubis
Insertion The lesser trochanter and linea aspera of the femur
Artery Deep femoral artery
Nerve Obturator nerve
Actions Adduction of hip
Identifiers
Latin musculus adductor brevis
TA98 A04.7.02.027
TA2 2629
FMA 22442
Anatomical terms of muscle

The adductor brevis is a muscle in the thigh situated immediately deep to the pectineus and adductor longus. It belongs to the adductor muscle group. The main function of the adductor brevis is to pull the thigh medially. [1] The adductor brevis and the rest of the adductor muscle group is also used to stabilize left to right movements of the trunk, when standing on both feet, or to balance when standing on a moving surface. The adductor muscle group is used pressing the thighs together to ride a horse, and kicking with the inside of the foot in soccer or swimming. Last, they contribute to flexion of the thigh when running or against resistance (squats, jumping, etc.). [2]

Contents

Structure

It is somewhat triangular in form, and arises by a narrow origin from the outer surfaces of the body of the pubis and inferior ramus of the pubis, between the gracilis and obturator externus.

The Adductor brevis muscle widens in triangular fashion to be inserted into the upper part of the linea aspera immediately lateral to the insertion of pectineus and above that of adductor longus.

Relations

By its anterior surface, the adductor brevis is in relation with the pectineus, adductor longus, and anterior branches of the obturator artery, the obturator vein, and the obturator nerve.

By its posterior surface with the adductor magnus and the posterior branches of the obturator artery, the obturator vein, and the obturator nerve.

By its outer border with the obturator externus, and the iliopsoas. By its inner border with the gracilis and adductor magnus.

It is pierced near its insertion by the middle perforating artery. [3]

Innervation

The adductor brevis is innervated dually by the anterior and posterior branches of the obturator nerve. [4]

Function

The muscle is primarily known as a hip adductor. It also functions as a hip flexor. Whether it acts to rotate the femur laterally or medially is dependent on position.

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The external obturator muscle or obturator externus muscle is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis.

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The adductor magnus is a large triangular muscle, situated on the medial side of the thigh.

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The gracilis muscle is the most superficial muscle on the medial side of the thigh. It is thin and flattened, broad above, narrow and tapering below.

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The obturator nerve in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves in the lumbar plexus; the branch from the third is the largest, while that from the second is often very small.

<span class="mw-page-title-main">Pubis (bone)</span> Most forward-facing of the three main regions making up the os coxa

In vertebrates, the pubis or pubic bone forms the lower and anterior part of each side of the hip bone. The pubis is the most forward-facing of the three bones that make up the hip bone. The left and right pubic bones are each made up of three sections; A superior ramus, inferior ramus, and a body.

<span class="mw-page-title-main">Medial compartment of thigh</span> One of the fascial compartments of the thigh

The medial compartment of thigh is one of the fascial compartments of the thigh and contains the hip adductor muscles and the gracilis muscle.

The anterior branch of the obturator nerve is a branch of the obturator nerve found in the pelvis and leg.

<span class="mw-page-title-main">Adductor minimus muscle</span> Small and flat skeletal muscle in the thigh

In human anatomy, the adductor minimus is a small and flat skeletal muscle in the thigh which constitutes the upper, lateral part of the adductor magnus muscle. It adducts and laterally rotates the femur.

References

PD-icon.svgThis article incorporates text in the public domain from page 473 of the 20th edition of Gray's Anatomy (1918)

  1. Saladin, Kenneth (2010). Anatomy & Physiology: The Unity of Form and Function (6th ed.). McGraw-Hill. ISBN   978-0-07-337825-1.[ page needed ]
  2. Moore, Keith. Clinically Oriented Anatomy (5th ed.). Lippincott Williams & Wilkins.[ page needed ]
  3. Wilson, Erasmus (1851). The anatomist's vade mecum: a system of human anatomy. John Churchill. pp.  260–1.
  4. Miura M, Nakamura E, Kato S, Usui T, Miyauchi R (August 1994). "The true nature of the adductor brevis dually innervated by the anterior and posterior branches of the obturator nerve in humans". Okajimas Folia Anatomica Japonica. 71 (2–3): 67–82. doi: 10.2535/ofaj1936.71.2-3_67 . PMID   7808725.

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