Lumbar Nerve Chart [upd]

| Nerve Root | Major Nerve Branch | Motor Function | Sensory Area | |------------|------------------|----------------|---------------| | | Iliohypogastric, Ilioinguinal | Abdominal wall muscles | Suprapubic & upper gluteal skin | | L2 | Genitofemoral, Lateral femoral cutaneous, Obturator, Femoral | Hip flexion (psoas), thigh adduction | Anterior/medial thigh | | L3 | Femoral, Obturator | Knee extension (quadriceps), thigh adduction | Anterior/medial thigh, distal medial knee | | L4 | Femoral, Obturator | Knee extension, ankle dorsiflexion (via L4 also to tibialis anterior) | Medial lower leg, medial foot arch |