Stocking skin sign

The Strümpell sign or Strümpell reflex (after Adolf von Strümpell ) is one of the so-called pyramidal trajectory signs that indicate damage to central motor neurons .

When the knee joint is flexed against resistance, a tonic dorsiflexion of the big toe occurs, as is the case with the other pyramidal tract signs, and often the toes II to V are spread apart.

Further pyramidal signs are the reflexes according to Joseph Babinski ( Babinski reflex ), Gordon ( Gordon reflex ), Hermann Oppenheim ( Oppenheim reflex ) and Chaddock ( Chaddock reflex ), which are sometimes referred to as reflexes of the Babinski group.

These reflexes are physiological in newborns and infants, and obligatorily pathological in adults.