to better define the frequency of initially negative radiographs of the navicular associated with true navicular fractures , and to test the efficacy of the three clinical signs ( snuffbox tenderness , pain with supination against resistance , and pain with longitudinal compression of the thumb toward the navicular ) , a prospective study of 85 patients who presented to the emergency department during a four-year period with a mechanism of injury suggesting possible navicular injury was conducted .
C3540840
clinical signs
C0030193
pain