Lower limb
Adductor longus
Musculus adductor longus
- Origin
- Body of the pubic bone, just below the symphysis
- Insertion
- Middle third of the linea aspera of the femur
- Function
- Strongest hip adductor; also assists hip flexion
- Innervation
- Obturator nerve (anterior branch), L2-L4
- Movement & chain
- Agonist in hip adduction and flexion; synergist to adductor magnus and pectineus; antagonist to gluteus medius and minimus.
- Palpation
- The tendon is readily palpable in the groin, directly lateral to gracilis, during resisted adduction with the hip slightly flexed.
- Clinical
- Most common site of groin injury (adductor strain) in sports involving sprinting and changes of direction, such as football and hockey.
- Segmental innervation
- L2–L4 (obturator nerve)
- In clinical practice
- Together with sartorius and the inguinal ligament, forms the boundary of the femoral triangle (Scarpa's triangle); the medial border of this muscle is a landmark for locating the femoral artery and inguinal lymph nodes.
- Region in the model
- Lower limb