A new program for the quantitative evaluation of dysmetria, was developed and compared to the other well known clinical tests. Upper extremity motor coordination was evaluated in ten traumatically brain injured subjects using the conventional clinical evaluation methods and a computer based evaluation system with a touchscreen. The relationship between the results of clinical evaluation and computer based drawing test was determined by Pearson and Spearman rank correlation coefficients. There were significant correlations between the results of clinical tests and computer based drawing test. In conclusion, we could evaluate the dysmetria quantitatively by a newly developed program. This tool can be used in many clinical situations for the evaluation of dysmetria or other movement disorders.