MEASUREMENT OF ULNAR TRANSLATION AND CARPAL HEIGHT

Ulnar translation, carpal height and carpal collapse are methods of me asurement described by Youm, by Chamay and by DiBenedetto. The accurac y of these methods has been statistically examined using 65 normal X-r ays. The lines of measurement were correlated with each other and more lines were sought to demonstrate better correlation. The validity of these methods was tested on 40 X-ray films from rheumatoid patients. T he greater accuracy of the recommended lines of measurement was confir med.