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choreic movements in the erect posture.
orthochorea/or·tho·cho·rea/ (or″tho-ko-re´ah) choreic movements in the erect posture.
orthochoreaAn obsolete term for chorea in which the most characteristic features occur when the patient is in the “classic” position—i.e., standing.
A form of chorea in which the spasms occur only or chiefly when the patient is in the erect posture.