Adductor Brevis Anatomy

Adductor Magnus Muscle

Anterior Part

Origin: Inferior pubic ramus and the ramus of the ischium
Insertion: Gluteal tuberosity of the femur
Actions: Adduction of the thigh
Innervation: Posterior division of the obturator nerve (L2. L3, L4)
Blood Supply: Femoral artery

Primary Actions of the Adduction Magnus (Anterior part)

1. Adduction of the thigh at the hip

Agonists:

  • Adductor brevis
  • Adductor longus

Antagonists:

  • Gluteus maximus (upper fibers)
  • Gluteus medius
  • Gluteus minimus

Gracilis and pectineus assist with adduction of the thigh at the hip

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Posterior Part

Origin: Inferolateral aspect of the ischial tuberosity
Insertion: Linea aspera, the proximal part of the medial supracondylar line and the adductor tubercle.
Actions: Adduction of the thigh
Innervation: Tibial portion of the sciatic nerve (L4, L5, S1, S2, S3)
Blood Supply: Femoral artery

Primary Actions of the Adductor Magnus (Posterior Part)

1. Adduction of the thigh at the hip

Agonists:

  • Adductor brevis
  • Adductor longus

Antagonists:

  • Gluteus maximus (upper fibers)
  • Gluteus medius
  • Gluteus minimus

2. Extension of the thigh at the hip

Agonists:

  • Gluteus maximus
  • Semitendinosus
  • Semimembranosus
  • Biceps femoris (long head)

Antagonists:

  • Psoas major
  • Iliacus