Figure 5

Consumption of pain rescue drug. Consumption of pain rescue drug in IA PN group decreased gradually until 16 weeks. There was no significant difference in consumption of pain rescue drug at every visits between IA PN and HMWHA groups.

Consumption of pain rescue drug. Consumption of pain rescue drug in IA PN group decreased gradually until 16 weeks. There was no significant difference in consumption of pain rescue drug at every visits between IA PN and HMWHA groups.