Explanation:
Flexion-distraction injuries such as Chance fractures primarily disrupt the posterior ligamentous complex (PLC). The PLC includes the supraspinous ligament, interspinous ligament, ligamentum flavum, and facet capsules. Disruption of this complex results in mechanical instability of the spine. MRI is particularly useful in evaluating PLC injury. Recognition of PLC disruption often influences surgical decision-making. Stabilization may be required to restore spinal stability and prevent deformity. Reference: Denis F. "The Three Column Spine and Its Significance in the Classification of Acute Thoracolumbar Spinal Injuries." Spine, 1983.