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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Radiographic characteristics of wrists in idiopathic carpal tunnel syndrome patients

Fig. 1

Measurements of roentgenographic indices. a Radial inclination was defined as the angle between one line connecting the radial styloid tip and the ulnar aspect of the distal radius and a second line perpendicular to the longitudinal axis of the radius. b Ulnar variance was defined as the relative lengths of the distal articular surfaces of the radius (middle line of the surface) and ulna (fovea). c The transverse diameter was defined as the distance between the radial edge of the radius and the ulnar edge of the ulna at the level of the radio-carpal joint. d Volar tilt was defined as the angle of the distal radial surface with respect to a line perpendicular shaft. e The antero-posterior diameter was defined as the distance between the volar and dorsal edge of the distal radius

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