A tangential approach refers to a technique where a needle is directed immediately under a nerve with the bevel upward, as opposed to aiming directly at the middle of the nerve. This alternative approach allows for a more careful and precise targeting of the nerve, reducing the risk of damaging the surrounding tissues. By positioning the needle tangentially to the nerve, it allows for a more controlled insertion and enhances the effectiveness of the procedure. This method can be particularly useful in complex or delicate procedures, where accuracy and precision are crucial for successful outcomes.