Adductor brevis muscle
Encyclopedia
The adductor brevis is a muscle in the thigh situated immediately behind the pectineus
and adductor longus
.
and inferior rami
of the pubis
, between the gracilis
and obturator externus
.
Its fibers, passing backward, lateralward, and downward, are inserted, by an aponeurosis, into the line leading from the lesser trochanter
to the linea aspera
and into the upper part of the linea aspera, immediately behind the pectineus
and upper part of the adductor longus
.
, 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
.
Pectineus muscle
The pectineus muscle is a flat, quadrangular muscle, situated at the anterior part of the upper and medial aspect of the thigh....
and adductor longus
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...
.
Origin and insertion
It is somewhat triangular in form, and arises by a narrow origin from the outer surfaces of the superiorSuperior pubic ramus
The superior pubic ramus is a part of the pubic bone which forms a portion of the obturator foramen.It extends from the body to the median plane where it articulates with its fellow of the opposite side...
and inferior rami
Inferior pubic ramus
The inferior pubic ramus is a part of the pelvis and is thin and flat. It passes laterally and downward from the medial end of the superior ramus; it becomes narrower as it descends and joins with the inferior ramus of the ischium below the obturator foramen....
of the pubis
Pubis (bone)
In vertebrates, the pubic bone is the ventral and anterior of the three principal bones composing either half of the pelvis.It is covered by a layer of fat, which is covered by the mons pubis....
, between the gracilis
Gracilis muscle
The gracilis is the most superficial muscle on the medial side of the thigh. It is thin and flattened, broad above, narrow and tapering below.-Origin and insertion:...
and obturator externus
Obturator externus muscle
The obturator externus muscle is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis.It is sometimes considered part of the medial compartment of thigh, and sometimes considered part of the gluteal region....
.
Its fibers, passing backward, lateralward, and downward, are inserted, by an aponeurosis, into the line leading from the lesser trochanter
Lesser trochanter
The lesser trochanter of the femur is a conical eminence, which varies in size in different subjects-Anatomy:It projects from the lower and back part of the base of the femur neck.From its apex three well-marked borders extend:...
to the linea aspera
Linea aspera
The linea aspera is a ridge of roughened surface on the posterior aspect of the femur, to which are attached muscles and intermuscular septum.Its margins diverge above and below....
and into the upper part of the linea aspera, immediately behind the pectineus
Pectineus muscle
The pectineus muscle is a flat, quadrangular muscle, situated at the anterior part of the upper and medial aspect of the thigh....
and upper part of the adductor longus
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...
.
Actions
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.Relations
By its anterior surface, the adductor brevis is in relation with the pectineusPectineus muscle
The pectineus muscle is a flat, quadrangular muscle, situated at the anterior part of the upper and medial aspect of the thigh....
, adductor longus
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...
, and anterior branches of the obturator artery
Anterior branch of the obturator artery
The anterior branch of the obturator artery runs forward on the outer surface of the obturator membrane and then curves downward along the anterior margin of the foramen....
, the obturator vein
Obturator veins
The obturator vein begins in the upper portion of the adductor region of the thigh and enters the pelvis through the upper part of the obturator foramen, in the obturator canal....
, and the obturator nerve
Obturator nerve
The obturator nerve in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves; the branch from the third is the largest, while that from the second is often very small.-Path:...
.
By its posterior surface with the adductor magnus
Adductor magnus muscle
The adductor magnus is a large triangular muscle, situated on the medial side of the thigh.It consists of two parts. The portion which arises from the ischiopubic ramus is called the "adductor portion", and the portion arising from the tuberosity of the ischium is called the "hamstring portion"...
and the posterior branches of the obturator artery
Posterior branch of the obturator artery
The posterior branch of the obturator artery follows the posterior margin of the foramen and turns forward on the inferior ramus of the ischium, where it anastomoses with the anterior branch....
, the obturator vein, and the obturator nerve.
By its outer border with the obturator externus
Obturator externus muscle
The obturator externus muscle is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis.It is sometimes considered part of the medial compartment of thigh, and sometimes considered part of the gluteal region....
, and the iliopsoas
Iliopsoas
-External links:*...
. By its inner border with the gracilis
Gracilis muscle
The gracilis is the most superficial muscle on the medial side of the thigh. It is thin and flattened, broad above, narrow and tapering below.-Origin and insertion:...
and adductor magnus.
It is pierced near its insertion by the middle perforating artery
Perforating arteries
The perforating arteries, usually three in number, are so named because they perforate the tendon of the Adductor magnus to reach the back of the thigh....
.