1 00:00:00,000 --> 00:00:02,310 (English captions by Jade Cheng from the University of Michigan) 2 00:00:02,310 --> 00:00:06,160 The ulnar compression evaluates for ulnar tunnel syndrome. 3 00:00:06,160 --> 00:00:10,340 Provide direct pressure over the ulnar tunnel or Guyon's canal deep to the hypothenar 4 00:00:10,340 --> 00:00:12,580 eminence for up to thirty seconds. 5 00:00:12,580 --> 00:00:14,779 Pain or numbness is a positive test.