Adductor magnus muscle
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{{Infobox Muscle |
Name = {{PAGENAME}} |
Latin = musculus adductor magnus |
GraySubject = 128 |
GrayPage = 473 |
Image = Anterior Hip Muscles 2.PNG |
Caption = The adductor magnus and nearby muscles |
Image2 = Gray344.png |
Caption2 = Structures surrounding right hip-joint. (Adductor magnus at upper right.)|
Origin = [[pubis (bone)|pubis]], [[tuberosity of the ischium]] |
Insertion = [[femur]] |
Blood = [[Obturator artery]] |
Nerve = [[posterior branch of obturator nerve]] (adductor) and [[sciatic nerve]] (hamstring)<ref>{{MedicalMnemonics|255|||}}</ref> |
Action = [[adduction]] of [[hip]] |
DorlandsPre = m_22 |
DorlandsSuf = 12548349 |
}}
The '''adductor magnus''' is a large triangular muscle, situated on the [[medial]] side of the [[thigh]].
The portion which arises from the [[ischiopubic ramus]] (a small part of the [[inferior ramus of the pubis]], and the [[inferior ramus of the ischium]]) is called the "adductor portion", and the portion arising from the [[tuberosity of the ischium]] is called the "hamstring portion". The hamstring portion is not considered part of the [[hamstring]] group of muscles, but it is adjacent to it.
==Adductor part==
Those fibers which arise from the ramus of the [[pubis (bone)|pubis]] are short, horizontal in direction, and are inserted into the rough line leading from the [[greater trochanter]] to the [[linea aspera]], medial to the [[gluteus maximus]].
Those fibers from the ramus of the [[ischium]] are directed downward and lateralward with different degrees of obliquity, to be inserted, by means of a broad [[aponeurosis]], into the linea aspera and the upper part of its medial prolongation below.
==Hamstring part==
The medial portion of the muscle, composed principally of the fibers arising from the tuberosity of the ischium, forms a thick fleshy mass consisting of coarse bundles which descend almost vertically, and end about the lower third of the thigh in a rounded tendon which is inserted into the [[adductor tubercle]] on the [[medial condyle of the femur]], and is connected by a fibrous expansion to the line leading upward from the tubercle to the [[linea aspera]].
==Osseoaponeurotic openings==
At the insertion of the muscle, there is a series of [[osseoaponeurotic]] openings, formed by tendinous arches attached to the bone. The upper four openings are small, and give passage to the [[perforating branches]] of the [[profunda femoris artery]]. The lowest is of large size, and transmits the [[femoral vessels]] to the [[popliteal fossa]].
==Action==
The function of the adductor magnus is to serve as a powerful [[adductor]] of the [[thigh]], along with being able to extend the thigh.
==Ontogeny and phylogeny==
In lower animals, the adductor magnus crosses the knee joint and inserts into the tibia. In humans, the distal part of the tendon detaches and becomes the medial collateral ligament of the knee joint. (Eizenberg, 2008)
==See also==
* [[adductor hiatus]]
==Additional images==
<gallery>
Image:Gray430.png|Muscles of the iliac and anterior femoral regions.
Image:Gray432 color.png|Cross-section through the middle of the thigh.
Image:Gray433.png|Deep muscles of the medial femoral region.
Image:Gray544.png|The arteries of the gluteal and posterior femoral regions.
</gallery>
==References==
{{reflist}}
==External links==
* {{MuscleLoyola|admg}}
* {{GPnotebook|-939130803}}
* {{SUNYAnatomyLabs|14|st|04|01}}
* {{eMedicineDictionary|Adductor+magnus+muscle}}
* [http://www.ptcentral.com/muscles/musclelegs.html#adductor%20magnus PTCentral]
{{Gray's}}
{{Muscles_of_lower_limb}}
[[Category:Thigh muscles]]
[[de:Musculus adductor magnus]]
[[es:Aductor mayor del muslo]]
[[fr:Muscle grand adducteur]]
[[hr:Veliki mišić primicač]]
[[la:Musculus adductor magnus]]
[[ja:大内転筋]]
[[sl:Velika pritezalka]]