title: "The cool patella sign".
authors.forename: P S
authors.initials: PS
authors.lastname: Helliwell
mesh_terms: D001172:Arthritis, Rheumatoid / Q000503:physiopathology; D001831:Body Temperature / Q000502:physiology; D006801:Humans; D010329:Patella / Q000502:physiology*; D013817:Thermography