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The very fact that the local anaesthetic has to be delivered to the leg via a syringe is, however, enough to dissuade some people from taking advantage of the treatment.
For patients who are genuinely needle-phobic, the mere thought of an injection is enough to stop them in their tracks, and so the logical progression is for clinicians such as myself to work on even more advanced methods which, being virtually painless, preclude the need for any anaesthetic.