... longer-standingdisease, syndesmophytes are present in only about 50% of cases and only a smaller percentage of these patientsdevelop the typical clinical picture of patients with anankylosed ... ASAS20,ASAS40, and ASAS partial remission criteria, respectively) of clinical symptoms. Andrei Calin, of Bath, UK, had started thiskind of work in the early 90s with the definition of the BathAnkylosing ... 66:113-117.6. Kruithof E, Baeten D, De Rycke L, Vandooren B, Foell D, Roth J,Canete JD, Boots AM, Veys EM, De Keyser F: Synovialhistopathology of psoriatic arthritis, both oligo- and polyartic-ular,...