"脊髓性感觉缺失" can be translated into English as "spinal sensory deficit" or "spinal cord sensory loss".
"Spinal sensory deficit" directly describes the reduction or absence of sensory function due to spinal cord involvement.
"Spinal cord sensory loss" is another clear and straightforward way to express the same concept.
Both translations are commonly used in medical contexts to describe the condition where there is a loss of sensation due to spinal cord damage or dysfunction.