Lovibond's angle
Encyclopedia
Lovibond's angle is the angle
Angle
In geometry, an angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle.Angles are usually presumed to be in a Euclidean plane with the circle taken for standard with regard to direction. In fact, an angle is frequently viewed as a measure of an circular arc...

 between the base of the nail plate
Nail plate
The nail plate is the hard and translucent portion of the nail, composed of keratin.- See also :* Runner's toe, repetitive injury seen in runners...

 and the adjacent skin on the end of the finger. Normally, this angle is less than 165°. If it is 180° or more, there will be a positive Schamroth's window test. This is a sign of clubbing.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK