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Lumbosacral Plexus!

Innervations of the LumboSacral Plexus

Iliohypogastric nerve (T12,L1) Innervates 1. External Obliques 2. Internal Obliques transverse abdominis
Ilioguinal nerve (T12,L1) Innervates 1. External Obliques 2. Internal Obliques transverse abdominis
Genitofemoral nerve (L1,L2) Innervates 1. Cremaster muscle 2. Skin of anterior thigh
Nerves to Iliacus & Psoas Major (L2,L3) Innervates 1. Psoas Major & Minor 2. Contribute to femoral nerve
Femoral nerve (L2,L3,L4) Innervates 1. Psoas 2. Iliacus 3. Pectineus 4. Sartorius 5. Rectus femoris 6. Vastus medialis 7. Vastus lateralis 8. Vastus intermedius
Obturator nerve (L2,L3,L4) Innervates 1. Adductor brevis 2. Adductor longus 3. Adductor magnus (anterior portion) 4. Gracilis 5. Obturator externus
Superior Gluteal nerve (L4,L5,S1) Innervates 1. Gluteus medias 2. Gluteus minimus 3. Tensor fascia latae
Inferior Gluteal nerve (L5,S1,S2) Innervates 1. Gluteus maximus
Nerve to Obturator Internus & Superior Gemellus (L5,S1,S2) Innervates 1. Obturator Internus 2. Superior Gemellus
Nerve to the quadratus femoris & inferior gemellus (L4,L5,S1,S2,S3) Innervates 1. Quadratus femoris 2. Inferior gemellus
Nerve to piriformis (S2) Innervates 1. Piriformis
Prudenal nerve (S2,S3,S4) Innervates 1. External anal sphincter
Peroneal division of Sciatic nerve (L4,L5,S1,S2,S3) Innervates 1. Biceps femoris short head
Tibial nerve (L4,L5,S1,S2) Innervates 1. Plantaris 2. Popliteus 3. Gastrocnemius 4. Soleus 5. Flexor digitorium longus 5. Flexor hallicus longus 6. Tibialis posterior
Tibial division of Sciatic nerve (L4,L5,S1,S2,S3) Innervates 1. Biceps femoris long head 2. Semitendinosus 3. Semimembranosus 4. Posterior portion of Adductor magnus
Common Peroneal nerve Splits into 1. Deep common peroneal nerve 2. Superficial peroneal nerve
Deep Common Peroneal nerve (L4,L5,S1) Innervates 1. Tibialis anterior 2. Extensor digitorium longus 3. Extensor hallicus longus 4. Peroneus tertius 5. Extensor hallicus brevis 6. Extensor digitorium brevis
Superficial Common Peroneal nerve (L4,L5,S1) Innervates 1. Peroneus longus 2. Peroneus brevis
LumboSacral Plexus L1, L2, L3, L4, L5, S1, S2, S3, & S4
Medial Plantar nerve (L4,L5,S1) Innervates 1. Flexor digitorium brevis 2. Abductor hallicus 3. Flexor hallicus brevis 4. 1st lumbrical
Lateral Plantar nerve (S1,S2) Innervates 1. Adductor hallicus 2. Quadratus plantae 3. Abductor digiti minimi 4. Flexor digiti minimi 5. Plantar innterossei (3) 6. Dorsal interossei (4) 7. Lumbricals (lateral 3)
Created by: alysiae



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