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.
Carpal tunnel syndrome is the most common peripheral nerve compression. Ultrasound guidance (USG) has been shown to improve safety when performing carpal tunnel injections. In addition to depositing corticosteroids within the carpal tunnel, USG hydrodissection has demonstrated clinical improvement in mild-to-moderate cases of carpal tunnel syndrome.
Safety is the primary concern when performing carpal tunnel injections and hydrodissecting the median nerve. There are multiple approaches to carpal tunnel injections. According to Guo et al. (2019) the modified distal-to-proximal carpal tunnel injection is a safe approach for carpal tunnel injections and median nerve hydrodissection.
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