Macroscopical signs of inflammation Score
1-2 Swollen toes 0.25
3-4 Swollen toes 0.50
Slightly swollen footpad or ankle 0.50-0.75
Swollen footpad or ankle 1.00
Swollen toes+slightly swollen footpad 1.25
Swollen toes+swollen footpad 1.5
Swollen footpad+swollen ankle 2.00
Mice with collagen antibody induced arthritis (CAIA) or collagen induced arthritis (CIA) were scored daily for signs of inflammation in their paws with a maximum of 35 days. Scoring was performed according to the method outlined in the table, resulting in a maximum arthritis score of 8 per animal.
Table 1: Inflammation score in CAIA and CIA mouse models for RA.