What is Grisel syndrome characterized by?

Grisel syndrome is characterized by a C1-C2 subluxation, which involves the atlanto-axial joint where the first cervical vertebra (C1) meets the second (C2). This condition is often associated with various forms of inflammation or disruption around the atlanto-axial joint, frequently resulting from an infectious or inflammatory process, such as a throat infection. The subluxation manifests as an abnormal positioning of the vertebrae, which can lead to neurological complications and require careful assessment and management.

This option accurately reflects the hallmark of Grisel syndrome, emphasizing the importance of recognizing the specific anatomical region affected when diagnosing and treating the condition. Understanding the mechanics and implications of C1-C2 subluxation is crucial for practitioners as they approach cases involving cervical spine disorders.