Table 2 Rat arthritic index

From: Age-related self-DNA accumulation may accelerate arthritis in rats and in human rheumatoid arthritis

Score

Symptom

0

There was no swelling and erythema evidence on the joint, including the small joints of the front foot and phalangeal joint, large joints including wrist and ankle.

1

There was mild swelling and erythema on ankle.

2

Mild swelling and erythema extended to small joint.

3

There was serious swelling and erythema on large joint.

4

Serious swelling and erythema encompassing on small and large joint.