Which hallmark sign might suggest the presence of a subluxation?

A hallmark sign that suggests the presence of a subluxation is a restricted range of motion. When a joint is subluxated, its normal alignment and function are compromised, which can lead to limitations in how much that joint can move. This restriction can affect the overall biomechanical function of the body, often resulting in discomfort or pain.

Additionally, restricted range of motion is often assessed during physical examinations and can serve as an important diagnostic indicator for chiropractors evaluating musculoskeletal conditions. This sign reflects the impacts on both muscle and joint function that are commonly associated with subluxations, making it a crucial aspect for practitioners to identify during their assessments.

In contrast, other options such as increased physical endurance, enhanced flexibility, and improved posture typically indicate positive health outcomes and physical capability, which would not be consistent with the effects typically seen in the presence of a subluxation.