The hamstring portion assists the glutes and true hamstrings in extending the hip, particularly when the leg is in a flexed position (e.g., coming up from a deep squat).
—the second largest muscle in the human body after the gluteus maximus. What is the Adductor Magnus?
| Feature | Adductor Longus | Adductor Brevis | Adductor Magnus | | :--- | :--- | :--- | :--- | | | Medium | Small | Largest | | Innervation | Obturator nerve | Obturator nerve | Obturator + Tibial | | Primary action | Adduction, Flexion | Adduction | Adduction, Extension | | Crosses knee? | No | No | Yes (Hamstring part) | | Role in squat | Minor | Minor | Major (extensor) | adductor magnus muscle
The muscle receives its primary blood supply from the deep femoral artery (profunda femoris) via its perforating branches, alongside contributions from the obturator and femoral arteries. Biomechanical Functions
Are you focusing on or injury rehabilitation ? The hamstring portion assists the glutes and true
Recent biomechanical research suggests that the adductor magnus may actually be more of a hip extensor
Because the Adductor Hiatus is a tight tunnel, vascular surgeons and orthopedists worry about . If the AM hypertrophies (gets too big) or goes into spasm, it can compress the femoral artery, leading to leg claudication (cramping pain during exercise due to lack of blood flow). | Feature | Adductor Longus | Adductor Brevis
Deeply stretches the medial compartment fibers.
This anterior section originates from the inferior pubic ramus and the ramus of the ischium. Its fibers travel obliquely downward and laterally to insert along the gluteal tuberosity and the entire length of the linea aspera on the posterior aspect of the femur.
While its name suggests its only job is "adducting" (moving the leg inward), recent research suggests its primary design may actually be for hip extension
Originating from the "sit bone" (ischial tuberosity), this part functions almost exactly like a hamstring muscle. It is even innervated by the sciatic nerve, just like your true hamstrings. Why It Matters: More Than Just Adduction