<P> Various kinds of information can be obtained from X-rays of the wrist: </P> <Ul> <Li> Carpal malalignment - A line is drawn along the long axis of the capitate bone and another line is drawn along the long axis of the radius . If the carpal bones are aligned, both lines will intersect within the carpal bones . If the carpal bones are not aligned, both lines will intersect outside the carpal bones . Carpal malignment is frequently associated with dorsal or volar tilt of the radius and will have poor grip strength and poor forearm rotation . </Li> <Li> Tear drop angle - It is the angle between the line that pass through the central axis of the volar rim of the lunate facet of the radius and the line that pass through the long axis of the radius . Tear drop angle less than 45 degrees indicates displacement of lunate facet . </Li> <Li> Antero - posterior distance (AP distance) - Seen on lateral X-ray, it is the distance between the dorsal and volar rim of the lunate facet of the radius . The usual distance is 19 mm . Increased AP distance indicates the lunate facet fracture . </Li> <Li> Volar or dorsal tilt - A line is drawn joining the most distal ends of the volar and dorsal side of the radius . Another line perpendicular to the longitudinal axis of the radius is drawn . The angle between the two lines is the angle of volar or dorsal tilt of the wrist . Measurement of volar or dorsal tilt should be made in true lateral view of the wrist because pronation of the forearm reduces the volar tilt and supination increases it . When dorsal tilt is more than 11 degrees, it is associated with loss of grip strength and loss of wrist flexion . </Li> </Ul> <Li> Carpal malalignment - A line is drawn along the long axis of the capitate bone and another line is drawn along the long axis of the radius . If the carpal bones are aligned, both lines will intersect within the carpal bones . If the carpal bones are not aligned, both lines will intersect outside the carpal bones . Carpal malignment is frequently associated with dorsal or volar tilt of the radius and will have poor grip strength and poor forearm rotation . </Li> <Li> Tear drop angle - It is the angle between the line that pass through the central axis of the volar rim of the lunate facet of the radius and the line that pass through the long axis of the radius . Tear drop angle less than 45 degrees indicates displacement of lunate facet . </Li>

Fracture of the distal end of radius icd 10