What is the expected outcome of a flexion injury characterized by complete loss of motor and pain/temp sensation below the injury?

The scenario describes a flexion injury that results in a complete loss of motor function and pain/temperature sensation below the level of the injury, which is characteristic of anterior cord syndrome.

In anterior cord syndrome, the anterior two-thirds of the spinal cord is affected, which includes the pathways for motor function (corticospinal tract) and the spinothalamic tract responsible for pain and temperature sensation; however, the posterior columns that carry proprioception and vibration sensation remain intact. The mechanism often involves flexion injuries that compress the anterior part of the cord or compromise its blood supply.

This condition leads to the expected outcome of paralysis (loss of motor function) and loss of pain and temperature sensation below the level of the injury due to the disruption of those specific pathways. The preservation of proprioception and vibration sense can help distinguish anterior cord syndrome from other syndromes where different pathways are affected.

In this case, the choice of anterior cord syndrome aligns with the clinical presentation outlined in the question, making it the correct answer.