1. What is nerve hydrodissection?

Nerve hydrodissection consists of injecting a solution guided by ultrasound around the painful nerve. Peripheral nerve entrapment is a common source of pain (eg. Carpal Tunnel Syndrome). Nerve irritation can occur at areas where the nerve travels through a canal or tunnel. However, it also happens because of trauma and scar tissue formation, which leads to symptoms such as numbness, paralysis, weakness and/or pain. Nerve hydrodissection treatment is done by injecting a volume of fluid around the nerves to release its adhesions from the neighboring structures.

This accurate injection must be done around the nerve (perineural) not inside the nerve (intraneural) to release the surrounding adhesions. Releasing the pressure on nerves not only alleviates pain but also allows the nerves to regenerate. The addition of biologics enhances the nerve regeneration and accelerates the recovery.

2. How is the procedure done?

Nerve Hydrodissection consists of injecting a solution (eg. Normal Saline or Plasma) around the painful nerve. The solution releases the healthy tissue from the scar tissue untrapping the nerve. The nerve hydrodissection technique requires ultrasound guidance to identify the exact site of entrapment as well as to localize the needle during the injection.

3. Who should consider this procedure?

You should consider this procedure if you have been diagnosed with a nerve entrapment syndrome, such as, but not limited to:

  • Carpal tunnel syndrome
  • Morton’s neuroma
  • Cubital tunnel syndrome
  • Thoracic outlet syndrome
  • Post surgical/trauma neuropathy

4. Which areas can be treated?

Nerve Hydrodissection is most commonly used in the peripheral extremities, such as, but not limited to:

5. What are the benefits of nerve hydrodissection?

Pain relief with decreased use of pain medications
Improved function and exercise tolerance

6. How long does the treatment take?

As with all injections, treatment is specific to each patient and condition, and on average takes approximately 10-15 minutes. Patients are allowed to leave shortly after the procedure.

7. What are the side effects of the treatment?

As with all injections, there is risk of infection and/or bruising. Specifically to nerve hydrodissection, the target nerve may be numb for several days after the injection and patients may experience tingling or burning sensation in the treated area. These symptoms tend to resolve after several days. We encourage early active range of motion exercises as tolerated.

8. How soon will I notice results?

Our patients usually feel an immediate pain relief following the injection due to the effects of the local anaesthetic. Once the anaesthetic effects have subsided, there will be a short period of discomfort followed by a gradual reduction in pain. Our patients feel less pain than before the procedure and improved function as their pain diminishes over time.