Origin

Pubis, tuberosity of the ischium

Insertion

Femur

Action(s)

Adduction of hip

Nerve Supply

Posterior branch of obturator nerve (adductor) and sciatic nerve (hamstring)

Arterial Supply

Obturator artery

Physical Exam

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Clinical Importance

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Disease States

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Discussion

Adductor part:

Those fibers which arise from the ramus of the pubis are short, horizontal in direction, and are inserted into the rough line of the femur 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 laterally 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.

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.

Figures

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Credits:

From Wikipedia:
Adductor magnus

Attachments:


Adductor magnus.png (image/png)