NS and FC were intrathecally administered 17 days after the operation, and the nociceptive thresholds were tested before drug administration and 15 min, 30 min, 1 h and 2 h afterwards.

• 骨癌各剂量组在第17天鞘内给予不同剂量的氟代柠檬酸,测定给药前和给药后15min、30min、1h、2hMWT和TWL值。