Lesser Occipital Nerve Injection

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Lesser Occipital Nerve Injection
Greater-and-lesser-occipital-nerve-blocks.png
Indication Occipital Neuralgia and headache disorders
Syringe 3mL
Needle 27-30G
Local 1-3mL of anaesthetic
Volume 1-3mL

The lesser occipital nerve (LON) is commonly injected alongside the greater occipital nerve for headache disorders.

Anatomy

The lesser occipital nerve (LON) arises from the primary ventral rami of the second and third cervical nerves. It passes superiorly along the posterior border of sternocleidomastoid. It divides into cutaneous branches that supply the lateral portion of the posterior scalp.

Cranio-cervical Dermatomes.[1]

Cranial dermatomes.png

Procedure

Landmark guided

  • The procedure is similar to the the greater occipital nerve injection
  • Locate the LON by going two-thirds of the way between the occipital protuberance and the mastoid process.
  • Enter perpendicular to the skip, stop at the periosteum.
  • Aspirate gently and then inject.

See Also

References

  1. Blumenfeld et al. Expert consensus recommendations for the performance of peripheral nerve blocks for headaches--a narrative review. Headache 2013. 53:437-46. PMID: 23406160. DOI.

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