Adductor longus muscle

In the human body, the adductor longus is a skeletal muscle located in the thigh. One of the adductor muscles of the hip, its main function is to adduct the thigh and it is innervated by the obturator nerve. It forms the medial wall of the femoral triangle.

Adductor longus muscle
The adductor longus and nearby muscles
Structures surrounding right hip-joint. (Adductor longus at upper right.)
Details
Originpubic body just below the pubic crest
Insertionmiddle third of linea aspera
Arterydeep femoral artery
Nerveanterior branch of obturator nerve
Actionsadduction of hip, flexion of hip joint
Identifiers
LatinMusculus adductor longus
TA98A04.7.02.026
TA22628
FMA22441
Anatomical terms of muscle

Origin and insertion

The adductor longus arises from the body of pubis inferior to pubic crest and lateral to pubic symphysis. [1]

It lies ventrally on the adductor magnus, and near the femur, the adductor brevis is interposed between these two muscles. Distally, the fibers of the adductor longus extend into the adductor canal.[1]

It is inserted into the middle third of the medial lip of the linea aspera.[1]

Relations

The adductor longus is in relation by its anterior surface with the pubic portion of the fascia lata, and near its insertion with the femoral artery and vein.

By its posterior surface with the adductor brevis and magnus, the anterior branches of the obturator artery, vein, and nerves, and near its insertion with the profunda artery and vein.

By its outer border with the pectineus, and by the inner border with the gracilis.[2]

Actions

Its main actions is to adduct and laterally rotate the thigh; it can also produce some degree of flexion/anteversion.[1]

Innervation

As part of the medial compartment of the thigh, the adductor longus is innervated by the anterior division (sometimes the posterior division) of the obturator nerve.[1] The obturator nerve exits via the anterior rami of the spinal cord from L2, L3, and L4.[3]

Development

Adductor longus is derived from the myotome of spinal roots L2, L3, and L4.[4]

References
  1. Platzer, Werner (2004). Color Atlas of Human Anatomy, Vol. 1, Locomotor System (5th ed.). Thieme. p. 242.
  2. Wilson, Erasmus (1851). The anatomist's vade mecum: a system of human anatomy. John Churchill. p. 260.
  3. Saladin, Kenneth S. Anatomy & Physiology: The Unity of Form and Function. 5th ed. Boston: McGraw-Hill, 2009.
  4. Aatif M. Husain (2008). A practical approach to neurophysiologic intraoperative monitoring. Demos Medical Publishing. p. 23.

Additional images
  • Right hip bone. External surface.
  • Muscles of the iliac and anterior femoral regions.
  • Deep muscles of the medial femoral region.
  • The left femoral triangle.
  • The femoral artery.
  • The lumbar plexus and its branches.
  • Cross section through thigh.
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Adductor longus muscle
  • Muscles of thigt. Cross section.
  • Muscles of Thigh. Anterior views.
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