Middle clunal nerve

Last revised by Henry Knipe on 22 Nov 2022

The middle clunal nerve is a sensory nerve that originates from S1-S4 1. It travels underneath the long posterior sacroiliac ligament (LPSL) and passes between the posterior superior iliac spine and posterior inferior iliac spine to course over the iliac crest 1. It supplies sensation to the lumbar and gluteal regions.

Clinical importance

The middle clunal nerves are associated with a potential cause for low back pain with nerve entrapment underneath LPSL 2.

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