The upgoing thumb sign

Abstract

The upgoing thumb sign is a subtle upper limb neurologic finding, with a high level of interobserver and intraobserver reliability. The test is easy to perform and can be interpreted accurately.

Babinski's hand sign: many have tried…

“…"… In a considerable proportion of patients with neurologic diseases, the thumb contralateral to the hemisphere or brainstem side involved, showed an upgoing thumb while keeping the palm facing at the level of the shoulder, corresponding to an upgoing toe sign (Babinski sign)" 15 .…”

“…DISCUSSION Since Babinski, the lower extremity has been the most exploited anatomic region for the majority of reflex hunters. Until recently, some predictably directed their efforts toward the upper extremity in search of a reflex analogous to the hallux extension 15,18 .…”