Femoral nerve
Plexus: Lumbosacral
Roots:
L2
L3
L4
Origin: Posterior divisions of L2-L4 roots
Motor innervation:
Pectineus
Branch: Superficial division of femoral nerve. Occasionally innervated by obturator nerve.
Roots:
L2
L3, L4
Sartorius
Branch: Superficial division of femoral nerve
Roots:
L2
L3
L4
Quadriceps
Branch: Deep division of femoral nerve
Roots:
L2
L3
L4
Sensory innervation:
Medial part of thigh
Branch: Medial cutaneous nerve of thigh
Roots:
L2
L3
L4
Anterior part of thigh
Branch: Intermediate cutaneous nerve of thigh
Roots:
L2
L3
L4
Medial part of leg
Branch: Saphenous nerve
Roots:
L2
L3
L4
Syndromes:
Saphenous nerve entrapment