Schaeffer's sign

Schaeffer's sign
Differential diagnosisPyramidal tract lesion

Schaeffer's sign is a clinical sign in which squeezing the Achilles tendon elicits an extensor plantar reflex. It is found in patients with pyramidal tract lesions, and is one of a number of Babinski-like responses.

The sign takes its name from the German neurologist Max Schaeffer (1852–1923).

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