Sacral plexus Flashcards
Inferior gluteal
L5-S2 Gluteus maxiums muscle
Superior gluteal
L4-S1 Gluteus minimus, gluteus medius and tensor fasciae latae
Nerve to piriformis
S1-S2 Piriformis muscle
Nerve to quadrator femoris and inferior gemellis
L4 - S1 quadratus femoris and inferior gemellus muscles
Nerve to obturator internus and superior gemellis
L5-S3 Obturator internus and superior gemellus muscles
Perforating cutaneous
S2-S3 Skin over inferior medial aspect of buttock
Posterior cutanous nerve of thigh
S1-S3
Skin over anal region, inferior lateral aspect of buttock, superior posterior aspect of thigh, superior part of calf scrotum in make and labia majora in female
Sciatic
L4-S3 Largest nerve in body Longest nerve in body Tibial and common fibular nerve bound together and split at knee Hams and adductor magnus
Tibial
L4-S3
Gastrocnemius, plantaris, soleus, popliteus, posterior tibialis, Flexor disitorum longus, Flexor hallucis longus, Branches of tibial nerve in foot are medial planter nerve and lateral planter nerve
Medial planter
Blanch of tibial nerve, abductor hallucis, flexor digitorum brevis, flexor hallucis brevis, skin over medial 2/3 of planter surface of foot
Lateral planter
Branch of tibial nerve remaining muscles of foot not supplied by medial planter nerve, skin over lateral third of planter surface of foot
Common fibular
L4-S2
Divides into superficial fibular and deep fibular branches
Superficial fibular
Fibularis longus and Fibularis brevis, skin over distal third of anterior aspect of led and dorsum of foot
Deep fibular
Tibialis anterior, extensor hallucis longus, fibularis tertius and extensor digitorum longus and extensor digitorum brevis. Skin on adjacent side of great and second toes
Pudental
S2-S4
Muscles of perineum, skin of penis and scrotum in male and labia majora, minora and vagina in female
