Rheumatology Adult 4 Female 4 Humans 4 Male 4 Middle Aged 4 ASAS criteria 2 Adolescent 2 Ankylosing Spondylitis Disease Activity Score 2 Ankylosing spondylitis 2 Arthritis, Psoriatic 2 Arthrography 2 Bath ankylosing spondylitis functional index 2 Blood Sedimentation 2 CASPAR criteria 2 Cervical Vertebrae 2 Cohort Studies 2 Disease activity 2 Foot 2 Hand 2 Monitoring disease 2 Pelvis 2 Prevalence 2 Psoriasis 2 Psoriatic arthritis 2 Psychometrics 2 Quality of Life 2 Questionnaires 2 Rheumatoid Factor 2 Sacroiliac Joint 2