Abstract

Dystonia is a movement disorder characterized by sustained or intermittent muscle contractions causing abnormal, often repetitive, movements, postures, or both. Botulinum toxin (BTX) has been recommended as the first-line treatment choice for the most common subtype, i.e. cervical dystonia. But some patients respond poor to BTX injection. In the new "collum-caput (COL-CAP)" concept, which is generated based on cervical functional anatomy, the abnormal postures of cervical dystonia are divided into 8 basic types instead of previous 4. The concept is helpful for clinicians to analyze the abnormal posture precisely, and improve the efficacy of BTX injection thereafter. DOI: 10.3969/j.issn.1672-6731.2017.02.005

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