Sural nerve block

Case contributed by Henry Knipe


Lateral foot skin color change and allodynia post ganglion cyst excision.

Patient Data

Age: 35 years
Gender: Female

Under ultrasound guidance, 5 mL lignocaine was injected around the right sural nerve. 

Annotated image

Annotated image demonstrating the anatomy. 

Case Discussion

The sural nerve can be easily identified in the high lateral ankle lying in the subcutaneous tissues between the Achilles tendon and the peroneus brevis muscle belly. It is accompanied by the small saphenous vein. This was a successful diagnostic block prior to consideration of cryotherapy of this nerve due to chronic pain. 

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