Fig. 4From: Ultrasound-guided needle release of the transverse carpal ligament with and without corticosteroid injection for the treatment of carpal tunnel syndromeTransverse ultrasonic image of the distal carpal tunnel at the level of the hamate bone showed median nerve compression. The gap between “++” suggests thicknesses of TCL (0.327 cm) on the cross-section at the level of the hamate bone. L lateral; M medialBack to article page