Which sensory finding may be associated with progressive spinal stenosis?

Which sensory finding may be associated with progressive spinal stenosis?

• A. Perianal, perineal pain and sensory loss
• B. Numbness in the fingers
• C. Hyperacusis
• D. Pain in the ankle only when walking

Answer: (A)

Progressive spinal stenosis can progress to cauda equina compression, which affects the sacral nerve roots responsible for perineal sensation. When these nerves are compromised, saddle anesthesia can appear as perianal or perineal pain and sensory loss. This pattern directly reflects involvement of the lower sacral roots and is a key sensory finding in severe stenosis. Numbness in the fingers would point to a different region (upper extremity), hyperacusis is unrelated to spinal nerve compression, and ankle pain that occurs only with walking describes neurogenic claudication without specifying the perineal sensory deficit.

Progressive spinal stenosis can progress to cauda equina compression, which affects the sacral nerve roots responsible for perineal sensation. When these nerves are compromised, saddle anesthesia can appear as perianal or perineal pain and sensory loss. This pattern directly reflects involvement of the lower sacral roots and is a key sensory finding in severe stenosis. Numbness in the fingers would point to a different region (upper extremity), hyperacusis is unrelated to spinal nerve compression, and ankle pain that occurs only with walking describes neurogenic claudication without specifying the perineal sensory deficit.