WEBVTT 00:00:00.000 --> 00:00:02.080 (English captions by Jade Cheng from the University of Michigan) 00:00:02.080 --> 00:00:06.140 Watson's test assesses for scapholunate instability. 00:00:06.140 --> 00:00:11.849 The examiner places a thumb over the patient�s scaphoid tubercle, applying dorsal pressure. 00:00:11.849 --> 00:00:15.990 The wrist is then moved from ulnar to radial deviation. 00:00:15.990 --> 00:00:18.850 A painful clunk is considered a positive test.