| rebound p. |
a manifestation of loss of coordination between groups of antagonistic muscles of the limbs in cerebellar dysfunction. It is usually tested by having the patient rest an elbow on a table and try to flex it against the resistance of the examiner; when the resistance is suddenly withdrawn, the affected arm rebounds to the patient's chest, whereas the normal arm flexes only slightly, the flexion being arrested by contraction of antagonistic muscles (the triceps). Cf. André Thomas sign (def. 1). Called also Holmes' or Holmes-Stewart p., Holmes' sign, and Stewart-Holmes sign.
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