Fig 2From: Association between extracellular signal-regulated kinase expression and the anti-allodynic effect in rats with spared nerve injury by applying immediate pulsed radiofrequencyPaw withdrawal test of mechanical allodynia. The paw withdrawal threshold in rats that were subjected to the sham operation, SNI without PRF (SNI group), or SNI plus either 45 V PRF or 60 V PRF (SNI + PRF-45 V and SNI + PRF-60 V groups, respectively). Mechanical allodynia was evaluated using dynamic plantar aesthesiometry. The data presented above were examined by ANOVA followed by Bonferroni test. D, day. #P < 0.05, ##P < 0.01 SNI, SNI + PRF-45 V, and SNI + PRF-60 V compared with the sham. *P < 0.05, **P < 0.01 SNI + PRF-45 V and SNI + PRF-60 V compared with SNIBack to article page