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Uptodate Reference Title
Clubbing of the fingers
Clubbing of the fingers
In a normal finger, the length of the perpendicular dropped from point A to point B should be greater than a similar line from C to D. In clubbing, the relationships are reversed; that is, the distance C-D is greater than the distance A-B. The other important change is the angle described by A-C-E. In the normal finger, this is usually <180°, whereas in clubbing, it is >180°.
Panels A and C redrawn from: DeRemee RA. Facets of the algorithmic synthesis. In: DeRemee RA, (Ed), Clinical profiles of diffuse interstitial pulmonary disease, Mount Kisco, NY, Futura Publishing Company, Inc, 1990, pp. 9-44. Panel B redrawn from: Bates B. A Guide to Physical Examination and History Taking, 5th Ed. Philadelphia: J.B. Lippincott Company, 1991.
