Point of Interest

Clubbing
Notice if the fingers are clubbed. In advanced clubbing, they will be drumstick-like with the distal portion of the finger appearing slightly larger. As one of the earliest signs, the nail loses its angle of insertion. To look for loss of this angle, check Schamroth's sign: have the patient place both forefinger nails together and look between them. If you can see a small diamond space between them, then the nails are not clubbed.

-- From Medscape Med Student: Assessing the Hands and Wrists in Elderly People

It has a name!!! :>