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Lower Limb Nerves
Segmental Innervation of the Lower Limb
| Muscle | Nerve | Nerve Root |
|---|---|---|
| Quadratus Lumborum | Lumbar Plexus | L1, 2, 3 |
| Psoas minor | Lumbar Plexus | L1,2 |
| Psoas major | Lumbar Plexus | L1,2,3 |
| Iliacus | Femoral | L2,3 |
| Pectineus | Femoral | L2,3,4 |
| Rectus femoris | Femoral | L2,3,4 |
| Vastus lateralis | Femoral | L2,3,4 |
| Vastus medialis | Femoral | L2,3,4 |
| Vastus intermedius | Femoral | L2,3,4 |
| Gracilis | Obturator | L2,3 |
| Adductor Longus | Obturator | L2,3,4 |
| Adductor Brevis | Obturator | L2,3,4 |
| Adductor Magnus | Obturator | L2,3,4 |
| Obturator Externus | Obturator | L3,4 |
| Gluteus Medius | Superior Gluteal | L4,5; S1 |
| Gluteus Minimus | Superior Gluteal | L4,5; S1 |
| Tensor Fascia Latae | Superior Gluteal | L4,5; S1 |
| Gluteus Maximus | Inferior Gluteal | L5; S1,2 |
| Piriformis | Sacral Plexus | L5; S1,2 |
| Superior Gemellus | Sacral Plexus | L5; S1,2 |
| Obturator Internus | Sacral Plexus | L5; S1,2 |
| Inferior Gemullus | Sacral Plexus | L4,5; S1 |
| Quadratus femoris | Sacral Plexus | L4,5; S1 |
| Semimembranosus | Sciatic (tibial division) | L5; S1,2 |
| Semitendinosus | Sciatic (tibial division) | L5; S1,2 |
| Biceps Femoris (long head) | Sciatic (tibial division) | L5; S1,2 |
| Biceps Femoris (short head) | Sciatic (common peroneal) | L5; S1,2 |
| Tibialis Anterior | Deep Peroneal | L4,5 |
| Extensor hallucis longus | Deep Peroneal | L5; S1 |
| Extensor digitorum longus | Deep Peroneal | L5; S1 |
| Peroneus tertius | Deep Peroneal | L5;S1 |
| Extensor digitorum brevis | Deep Peroneal | L5; S1 |
| Peroneus longus | Superficial Peroneal | L5; S1,2 |
| Peroneus brevis | Superficial Peroneal | L5; S1,2 |
| Gastrocnemius | Tibial | S1,2 |
| Plantaris | Tibial | L5; S1 |
| Popliteus | Tibial | L5; S1 |
| Tibialis Posterior | Tibial | L4,5 |
| Flexor Digitorum Longus | Tibial | S1,2 |
| Flexor Hallucis Brevis | Medial plantar | L5; S1 |
| Soleus | Tibial | S1,2 |
| Flexor Hallucis Longus | Tibial | S1,2 |
| Abductor Hallucis | Medial Plantar | L5; S1 |
| Flexor Digitorum Brevis | Medial Plantar | L5; S1 |
| Lumbricals I | Medial Plantar | L5; S1 |
| Quadratus Plantae | Lateral Plantar | S2,3 |
| Abductor Digiti Minimi | Lateral Plantar | S2,3 |
| Lumbricals II, III, IV | Lateral Plantar | S2,3 |
| Adductor Hallucis | Lateral Plantar | S2,3 |
| Plantar Interossei | Lateral Plantar | S2,3 |
| Dorsal Interossei | Lateral Plantar | S2,3 |