Sacral Plexus Anatomy

 Sacral Plexus Anatomy 

Sacral Plexus

Sacral Plexus is formed by ventral rami of part of L4, whole of L5, S1, S2,  S3 nerves. 

It divide into Two Divisions :-
1. Ventral Divisions
2. Dorsal divisions

Branches Which Comes from Ventral diaisions :-

  • Nerve to quadratus femoris (L4, L5, S1): Supply to quadratus femoris, inferior gemellus and hip joint.

  • Nerve to obturator internus (L5, S1, S2): Supply to obturator internus and-superior gemellus.

  • Pudendal nerve (S2, S3, S4) :- supply to the skin, external genital organs and muscles of perineum.

  • Perforating cutaneous nerve (S3, S4): Supply to smallarea of skin of gluteal region.

  • Tibial part of sciatic nerve (L4, L5, 51, 52, S3):  Supply to hamstrings all muscles of the calf and ofthe sole.

  • Posterior cutaneous nerve of thigh (S1, S2): Supply to skin of back of thigh.

Branches Which Comes from Dorsal Diaisions :-

  • Superior gluteal nerve (L4,L5, S1): Supply to gluteus medius, gluteus minimus and tensor fascia latae.

  • Inferior gluteal nerve (L5, 51, S2): Supply only gluteus maximus.

  • Common peroneal part of sciatic nerve (L4, L5, S1,S2): Supply to evertors and foot and dorsiflexors of ankle joint and extensor digitorum brevis.

Sacral Plexus Diagram

Sacral Plexus Diagram

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