A grip compression view or wrist in ulnar deviation may be necessary in addition to PA/lateral views
Any of the following signs may be seen:
Widening of the<unk>  joint space >3mm
Known as Terry-Thomas sign (or David Letterman sign)
Rotary subluxation of the scaphoid
Lateral view:<unk>  angle >60 degrees
PA view: Cortical ring sign (circular cortex of the bone is more prominent)
Dorsal intercalated segment instability
Dorsal angulation of lunate relative to radius resulting in capitolunate angle > 20°
Seen as loss of the normal collinear arrangement of the capitate, lunate, and radius
Widening of the<unk>  joint space >3mm
Known as Terry-Thomas sign (or David Letterman sign)
Rotary subluxation of the scaphoid
Lateral view:<unk>  angle >60 degrees
PA view: Cortical ring sign (circular cortex of the bone is more prominent)
Dorsal intercalated segment instability
Dorsal angulation of lunate relative to radius resulting in capitolunate angle > 20°
Seen as loss of the normal collinear arrangement of the capitate, lunate, and radius
Known as Terry-Thomas sign (or David Letterman sign)
Lateral view:<unk>  angle >60 degrees
PA view: Cortical ring sign (circular cortex of the bone is more prominent)
Dorsal angulation of lunate relative to radius resulting in capitolunate angle > 20°
Seen as loss of the normal collinear arrangement of the capitate, lunate, and radius
Scapholunate dissociation
Lunotriquetral ligament instability
Cuneiform fracture
Ring avulsion injury
Perilunate and lunate dislocations
Maisonneuve fracture
Scaphoid fracture
Carpal fractures