What is Anterior cord syndrome a result of?

Anterior cord syndrome is primarily a result of the disruption of the blood supply to the anterior portion of the spinal cord or damage due to physical injury. This syndrome typically occurs when bony fragments, such as from a fractured vertebra, displace into the anterior part of the spinal cord. This results in a loss of motor function and pain and temperature sensation below the level of the injury while preserving proprioception and vibration sense, which are carried by the posterior columns of the spinal cord.

The mechanism described in the correct answer highlights how injuries that create direct pressure on the anterior spinal artery or the cord itself can lead to the characteristic symptoms associated with this syndrome. Understanding the pathophysiology of anterior cord syndrome is crucial in the management and rehabilitation of individuals affected by spinal cord injuries.