Branches of lumbar plexus

The lumbar plexus involves the anterior primary rami of L1 to L5. This plexus forms in the substance of psoas major muscle. The branches are
Iliohypogastric L1
Ilioinguinal L1
Lateral cutaneous nerve of thigh L2 L3
Femoral L2L3L4

Genitofemoral L1L2

Obturator L2L3L4
Lumbosacral trunk L4L5

All the branches emerge from the lateral border of psoas major except genitofemoral (anterior), Obturator (medial) and Lumbosacral (medial).