The Authors' Response to the Letter to the Editor on "Ultrasound Guided Injection of the Carpal Tunnel: Do You Mind the Retinaculum?"

To the Editor

We appreciate the helpful comments. To ensure that the needle was placed beneath the flexor retinaculum and precisely delivered the medication along the median nerve, we used short-axis view to demonstrate anatomical structures inside the carpal tunnel. Then, we localized the median nerve, measured the cross-sectional area, and then used long-axis view to further trace the median nerve. We then approached the median nerve with the needle from the palmar site under long-axis view. Furthermore, we rechecked the position of our needle under the short-axis view when approaching the carpal tunnel. Finally, the needle appeared as a dot beside the median nerve and below the flexor retinaculum, while the comet tail indicated the metal nature of the needle (Fig. 1). The medication was then injected.