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).
Synonym(s): Kohnstamm phenomenon
Farlex Partner Medical Dictionary © Farlex 2012
[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