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Table 3 Results of single and double facet joint nerve blocks (Single blocks with lidocaine and double blocks with lidocaine and bupivacaine)

From: Prevalence of facet joint pain in chronic spinal pain of cervical, thoracic, and lumbar regions

  Cervical (255) Thoracic (72) Lumbar (397)
  Double Blocks + Double Blocks Double Blocks
Single Blocks* Positive Negative Positive Negative Positive Negative
Positive 140 72 30 23 124 74
Negative   43   19   199
Prevalence 55% (95% CI 49% – 61%) 42% (95% CI 30% – 53%) 31% (95% CI 27% – 36%)
False positive rate 63% (95% CI 54% – 72%) 55% (95% CI 39% – 78%) 27% (95% CI 22% – 32%)
  1. Note: * With single blocks in the cervical spine, 212 patients (ie, 140 + 72) had positive responses with lidocaine blocks; 53 patients with thoracic pain had positive responses; and 198 patients with lumbar pain had positive responses. + With double blocks, 140 patients with neck pain, 30 with thoracic pain and 124 with lumbar pain had positive responses.