title: Mobility with rigidity: a view of the spine.
mesh_terms: D000293:Adolescent; D000328:Adult; D001172:Arthritis, Rheumatoid / Q000503:physiopathology; D002114:Calcinosis / Q000378:metabolism; D002358:Cartilage, Articular / Q000166:cytology / Q000378:metabolism / Q000502:physiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement; D010007:Osteochondritis / Q000503:physiopathology; D013131:Spine / Q000502:physiology* / Q000503:physiopathology; D013167:Spondylitis, Ankylosing / Q000503:physiopathology