Kohnstamm phenomenon

af·ter·move·ment

(af'ter-mūv'ment),
Involuntary arm abduction that follows sustained isometric contraction of the deltoid and supraspinatus muscles (usually performed by pushing the upper extremity forcibly and against an immovable vertical surface while standing beside it).
Farlex Partner Medical Dictionary © Farlex 2012

Kohnstamm phenomenon

(kon'stom?)
[Oscar Kohnstamm, Ger. physician, 1871–1917]
Aftermovement.
Medical Dictionary, © 2009 Farlex and Partners

Kohnstamm,

Oskar, German physician, 1871-1917.
Kohnstamm phenomenon - a slow, involuntary elevation of the arm after strong pressure against a firm object. Synonym(s): after-movement
Medical Eponyms © Farlex 2012
References in periodicals archive ?
28 and learn about the Kohnstamm phenomenon then try it out--I did its brilliant!