
Adductor Longus Muscle
Origin: Anterior surface of the pubis, in the angle between the crest and pubic symphysis
Insertion: Lower two-thirds of the medial lip of the linea aspera on the posterior surface
Actions: Adduction of the thigh
Innervation: Anterior division of the obturator nerve (L2. L3)
Blood Supply: Femoral artery
Primary Actions of the Adduction Longus
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Secondary Actions of the Adductor Longus
1. Assists with internal rotation of the thigh at the hip
Agonists:
- Tensor fasciae latae
- Gluteus mimimus (anterior fibers)
- Gluteus medius (anterior fibers)
Antagonists:
- Obturator internus
- Obturator externus
- Gemellus superior
- Gemellus inferior
- Quadratus femoris
Adductor brevis and adductor magnus assist with internal rotation of the thigh at the hip.
2. Assists with flexion of the thigh at the hip
Agonists:
- Psoas major
- Iliacus
Antagonists:
- Gluteus maximus
- Semitendinosus
- Semimembranosus
- Biceps femoris (long head)
- Adductor magnus (posterior part)
Pectineus, rectus femoris, and sartorius also assist with flexion of the thigh at the hip.
Muscle Pain Information: The adductor longus muscle contributes to pain in the groin, hip joint, inner thigh and the inside of the knee