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Quantitation of digital clubbing by shadowgram technique.
  1. D Sinniah,
  2. A Omar

    Abstract

    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.

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