Ultrasound-Guided Nerve Hydrodissection: What is it? A Review of the Literature.

Nerve hydrodissection is a technique used when treating peripheral nerve entrapments. It involves using an anesthetic or solution such as saline to separate the nerve from the surrounding tissue, fascia, or adjacent structures. There are no high-level studies to determine the need or effectiveness of hydrodissection or to establish its safety. Low-level studies do demonstrate some effectiveness and safety for the technique, but further research is necessary.