Evaluation of Spine Posture, Trunk Position Sense and Gait in Axial Spondyloarthritis Patients

Inclusion Criteria: For AS and nr-axSpA; * Diagnosed with AS and nr-axSpA by a rheumatologist according to ASAS criteria, * Diagnosed with AS and nr-axSpA at least two years ago, * Volunteer to participate in the study, * Individuals between the ages of 18-65 will be included in the study. For Healthy volunteers; * Volunteer to participate in the study, * Individuals between the ages of 18-65 will be included in the study. Exclusion Criteria: For AS and nr-axSpA; * Having orthopedic problems in the lower extremity, * Locomotor disorders (fractures and prostheses) and / or osteoporosis, * Having a history of lower extremity and spine surgery, * Having neurological and cognitive problems, * Having vision and hearing problems, * Regular exercise, * Individuals with kyphosis above 50 degrees will be excluded from the study. For Healthy volunteers; * Having any musculoskeletal, neurological and rheumatological diseases, * Having any condition (advanced respiratory or orthopedic problems, fracture, sprain or spine surgery) that will prevent the evaluation, * Regular exercise, * Individuals who do not agree to participate in the study will be excluded from the study.