Arch Dis Child 54:145-146 doi:10.1136/adc.54.2.145
  • Research Article

Quantitation of digital clubbing by shadowgram technique.


Finger clubbing was quantified from the magnified silhouette of the right index finger in controls and patients with clubbing, using a simple shadowgram technique. There was good correlation between clinical assessment and measurement of both the profile angle and the hyponychial angle. The hyponychial angle appeared to be a more accurate indicator of clubbing than the profile angle.