Inflammatory Arthropathy
A 52-year-old woman with long-standing rheumatoid arthritis presents with progressive hand deformities. Examination reveals bilateral wrist volar subluxation, MCP joint ulnar deviation with volar subluxation, and several finger deformities including PIP joint hyperextension with DIP flexion in some digits and PIP flexion with DIP hyperextension in others. Regarding the pathophysiology and classification of rheumatoid hand deformities:
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The pathophysiology of rheumatoid deformities involves synovitis causing joint capsule and ligament ...
Swan neck deformity consists of PIP hyperextension and DIP flexion; causes include MCP synovitis cau...
Boutonniere deformity is caused by primary DIP extensor mechanism injury; swan neck always originate...
Boutonniere deformity consists of PIP flexion and DIP hyperextension; it results from attenuation or...
Rheumatoid thumb deformities include Type I (boutonniere: MCP flexion, IP hyperextension from EPL su...
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