The thumb sign is positive when the entire distal phalanx of the adducted thumb extends beyond the ulnar border of the palm with or without the assistance of the patient or examiner to achieve maximal adduction.
| User |
Variation |
 Konig95 |
Yes, more with left hand exceeds ulna,, harder to do with right (more musculature) |
| JoDa |
No |
 kell |
yes, more with left hand exceeds ulna,, harder to do with right (more musculature) |
| atelepen |
No |
| Lance Farrell |
No |
| Sparklingether |
No |
| lms18808 |
yes, forward |
| Jordan Binless |
No |
| Daniel |
No |
 Star Squires |
my thumb can touch the wrist bending both forward & backward. Diagnosed Ehlers-Danlos Hypermobility with Classical crossover |
 stephen bradley |
No |
 Kristen L. Ramsay |
No |
| B |
No |
| Wayne Morgan |
Don't understnad the question |
| Duane Kaufman |
No |
| moontide |
Used to be able to easily (both hands forward) up until about mid 30's, now I have too much wrist pain |
 Traci |
No |
| laschai |
Yes, more with left hand exceeds ulna,, harder to do with right (more musculature) |
| lorettaf42 |
No |
| Kris Greig |
No |
| Ilan |
Yes, bilaterally |
 auroradiem |
No |
| angoldberg |
No |
| Brian Pardy |
No |
 saw2112 |
My thumb can touch the wrist bending both forward & backward. diagnosed ehlers-danlos hypermobility with classical crossover |
 correybarone |
No |
 jbearden@ieee.org |
No |
| tyler.tittle |
Don't understnad the question |
| Lorraine Verboort |
Yes, forward |
| DemonRaven |
No |
| ladynajera |
No |
| Ariadni |
Don't understnad the question |
| mboehl |
No |
| glorybeam |
My thumb can touch the wrist bending both forward & backward. diagnosed ehlers-danlos hypermobility with classical crossover |
| Aether |
No |
| Carlan |
No |
 Anaro Lexnon |
Don't understnad the question |
| jmandula |
No |
| jahower76 |
Yes, bilaterally |
| nonblonde |
No |
| Chris1507 |
No |
| aciddad |
No |
 Kaley White |
No |
| Vicky |
Yes, bilaterally |
| otis |
No |
| articklilly |
No |
