Cluneal Nerve Injection
|Cluneal Nerve Injection|
|Indication||Cluneal Nerve Pain|
|Needle||80mm nerve block needle|
Injection can be done by landmark guided palpation based on the maximal area of tenderness, and/or by ultrasound guidance. Injections are typically done with local anaesthetic, but dextrose prolotherapy can be used
- SCN Injection
An ultrasound guided technique for superior cluneal nerve entrapment has been developed, in a cadaveric and live human randomised study.
- Position:Lateral decubitus
- Target: Subfascial layer between the thoracolumbar fascia and erector spinae to ensure injectate spread to all superior cluneal nerves.
- Probe:High frequency linear transducer.
- Identify the lateral border of the erector spinae muscle at the level of the superior margin of the iliac crest, which fuses laterally with the transverse abdominis aponeurosis.
- Trace the erector spinae caudally to the level of the iliac crest
- Keep the transducer cranial to the level of where the lumbar intermuscular aponeurosis fuses with the posterior layer of the thoracolumbar fascia.
- Insert needle lateral to medial, pierce the thoracolumbar fascia just medial to the point of fusion with the anterior layer at the lateral margin of the erector spinae.
- The erector spinae muscle and posterior layer of the thoracolumbar fascia should separate during injection, and as this happens move the needle medially.
- SCN Injection
- Position: Prone
- Palpate: posterior wings of the iliac crest, 6-7cm lateral from the midline, and mark the area. Often there is a small lipoma, and use this to guide needle placement around the lipoma.
- Advance needle perpendicularly to the marked area under contact with bone.
- Following negative aspiration inject 1mL of solution