Compression: anterior column only — usually stable. Burst: anterior + middle columns — unstable, canal compromise risk. Flexion-distraction (Chance): posterior tension failure — unstable. Fracture-dislocation: all three columns — highly unstable, neuro injury common.
Which of the following types of thoracolumbar fractures is considered stable according to the Denis three-column model?
What is the primary determinant of stability in the Denis three-column model?
Which type of thoracolumbar injury is characterized by the failure of posterior tension structures?
In a burst fracture, which column is most at risk for neural compromise due to retropulsion of fragments?
According to Denis's stability rule, which of the following injuries would be classified as unstable?
Which column is primarily responsible for resisting flexion in the thoracolumbar spine?
What is the hallmark of an unstable thoracolumbar injury according to the Denis classification?
In the context of thoracolumbar injuries, what is the likely risk associated with fracture-dislocation?
What is the primary function of the anterior column in the thoracolumbar spine?
Which of the following statements about the Denis three-column model is true?
