Fig. 3From: Comparative study between blind and ultrasound-guided steroid injection for carpal tunnel syndromeUltrasound image of the median nerve (dashed arrows) of a 45-year-old patient with mild CTS managed with ultrasound-guided injection. CSA and FR measured 12 mm2 and 2.52 before injection (left image) and improved to 8 mm2 and 2.13, respectively, at 4 weeks after injection (right image)Back to article page