**Core Concept**
Hangman's fracture is a type of bilateral facet dislocation in the cervical spine, specifically at the C2 level. It is characterized by a fracture of the posterior elements of the vertebra, including the pedicles and laminae, with an intact anterior longitudinal ligament.

**Why the Correct Answer is Right**
Hangman's fracture occurs due to a hyperextension injury, where the head is thrown backward, causing the facets to dislocate and the posterior elements to fracture. The intact anterior longitudinal ligament helps to maintain the continuity of the vertebral body. This type of fracture is often associated with a "bilateral facet dislocation" pattern on imaging studies. The mechanism of injury involves a combination of flexion, extension, and rotation forces on the cervical spine.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the characteristic features of a Hangman's fracture.
**Option B:** This option is incorrect because it is not specific to the cervical spine and can occur in other regions of the spine.
**Option C:** This option is incorrect because it does not account for the specific mechanism of injury and the resulting fracture pattern.

**Clinical Pearl / High-Yield Fact**
Hangman's fracture is a classic example of a "stable" fracture in the cervical spine, meaning that it does not typically result in neurological deficits or instability. However, it can be associated with significant morbidity and mortality if not promptly diagnosed and managed.

**Correct Answer: C. A Hangman's fracture involves a bilateral facet dislocation at the C2 level with an intact anterior longitudinal ligament.**