Document ID: chunk:federal_register_of_legislation:F2023L00223:clause:1_351
Version: federal_register_of_legislation:F2023L00223
Segment Type: clause
Provision Reference: sch 1 cl 351
Character Range: 274415–275218

351     Alteration of motion segment integrity – motion segment alteration can be either loss of motion segment integrity (increased translational or angular motion), or decreased motion secondary to developmental fusion, fracture healing, healed infection, or surgical arthrodesis. An attempt at arthrodesis may not necessarily result in a solid fusion but may significantly limit motion at a motion segment. Motion of the individual spine segments cannot be determined by a physical examination but is evaluated with flexion and extension roentgenograms. When routine x-rays are normal and severe trauma is absent, motion segment alteration is rare, and flexion and extension roentgenograms are indicated only if motion segment alteration is suspected from the individual's history or routine x-rays.