The genitofemoral nerve pierces the psoas major and descends on its anterior surface. It splits into two branches – a genital and a femoral branch
The femoral branch of the genitofemoral nerve is just lateral to the femoral artery through the lacuna vasorum which is medial to the iliopectineal arch. It innervates the skin just distal to the inguinal ligament
The genital branch of the genitofemoral nerve follow the spermatic cord in males and innervates the scrotal skin and supply motor branches to the cremaster muscle
In females it runs via the inguinal canal together with the round ligament of the uterus; it innervates the labia majora
Axial view of the femoral branch of the genitofemoral nerve (green arrow), femoral nerve (cyan arrow), lateral femoral cutaneous nerve (magenta arrow), iliacus (red asterix), iliac fascia (green), fascia lata (yellow)
