Peripheral Mononeuropathy - Sacral Plexus

Question 1

Where is the Sacral Plexus found?

Answer 1

Surface of the posterior pelvic wall - anterior to Piriformis Muscle.

Question 2

Spinal Nerves of the Sacral Plexus.

Answer 2

S1, S2, S3, S4 - Anterior Fibres.

Question 3

What is the Lumbosacral Trunk?

Answer 3

Convergence of L4 and L5 with Sacral Spinal Nerves.

Question 4

Nerve Branches of the Sacral Plexus (6).

Answer 4

1. Superior Gluteal Nerve.
2. Inferior Gluteal Nerve.
3. Sciatic Nerve.
4. Posterior Femoral Cutaneous.
5. Pudendal Nerve.
6. Smaller Branches.