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Mouse Arthritis Scoring System

# 1

Observe three joint types for scoringA: Interphalangeal jointB: Metacarpophalangeal jointC: Carpal and tarsal joint

Normal: Score 0

Score 1One joint type (A, B, and C)has redness and swelling.

Score 2Two joint types (A, B, and C) have red-ness and swelling.

Score 3All three joint types have redness and swelling.

Score 4Maximal redness and swelling of the entire paw leads to the disappearance of anatomical definition

Front Paws Hind Paws

A

BC

B

C A

A C

AB

C A

A

C

B

A

C

B