| Nerve Root | Dermatome | Myotome | | --- | --- | --- | | L1 | Medial thigh and groin | Iliopsoas | | L2 | Anterior thigh and medial leg | Iliopsoas, obturator externus | | L3 | Medial leg and foot | Quadriceps femoris, obturator externus | | L4 | Medial leg, foot, and toes | Quadriceps femoris, tibialis anterior | | L5 | Lateral thigh, posterior leg, and foot | Gluteus medius, biceps femoris |
| 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 | lumbar nerve chart
Would you like a printable diagram of the lumbar dermatome map or a table of red flags for lumbar radiculopathy? | Nerve Root | Dermatome | Myotome |
In conclusion, a lumbar nerve chart is an essential tool for healthcare professionals and individuals seeking to understand the complex anatomy and functions of the lumbar spine. By familiarizing yourself with the lumbar nerve roots, dermatomes, and myotomes, you can better diagnose and manage lumbar nerve-related disorders. and toes | Quadriceps femoris