title: Do pathological opposites cancel each other out? Do all patients with both hypermobility and spondylarthropathy fulfill a criterion of any disease?
abstract: When a patient with hypermobility syndrome suffers from ankylosing spondylitis or seronegative spondylarthropathy with spinal stiffness, a part of the mobility criterion of the one disease may be "eliminated" due to the other illness. These two cases may represent typically such opposite effects on mobility.
authors.affiliation: Rehabilitation Institute of the Finnish Rheumatism Association, Kangasala, Finland.
authors.forename: J V
authors.initials: JV
authors.lastname: Viitanen
mesh_terms: D000328:Adult; D004535:Ehlers-Danlos Syndrome / Q000150:complications / Q000473:pathology* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular; D013131:Spine / Q000502:physiology; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000473:pathology* / Q000503:physiopathology*