A 36-year-old man was involved in a motor vehicle collision and received an injury to the spine at the C7 level. The injury transected exactly half (anterior to posterior) of the spinal cord on the patient's right side.
-On which side of this patient would the position sensation (proprioception) be absent?

Question

Quizplus · Accepted Answer

Proprioceptive sensation is mediated by the dorsal columns of the spinal cord, which carry information ipsilaterally until they synapse in the medulla. Therefore, an injury to one side of the spinal cord at the C7 level would result in a loss of proprioception on the same side of the body (the right side, in this case).

A 36-Year-Old Man Was Involved in a Motor Vehicle Collision