The hand/wrist might feel a bit sore for a few hours and the thumb, index and middle finger might become numb after a few minutes for a few hours.
In patients with mild or moderate carpal tunnel syndrome this can be a very effective way of treatment. In my personal experience, many patients can avoid surgery or have significant improvement for months or years.
Commonly asked questions
Why can the effect be long-lasting if the drugs usually wear off within hours or a few days?
There is no plausible answer but as with many injections (Spine or other joints) the mixture of local Anaesthetics and steroids seem to settle the inflammation and produce an effect for a much longer time than they actually work.
Can I have injections of both hands?
Yes. Unlike in surgical decompression there is no scar and the discomfort is limited to a few hours.