Tw3 bone age, z-score, and percentile calculator

Calculate bone age from RUS scores using the Tanner-Whitehouse method

by Jonathan Colledge

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RUS Score (10–1000):

Chronological Age (years):

Sex:

Tw3 percentiles are based on TW3/EA90 data and are not applicable to all populations

References

Tanner, James Mourilyan. 2001. Assessment of Skeletal Maturity and Prediction of Adult Height (TW3 Method). 3. ed., repr. Edinburgh: Saunders.
AlphaBridge Computers. 1999. RUSBoneAge. Version 1.0. Computer software. Distributed with Tanner, J. M. Assessment of Skeletal Maturity and Prediction of Adult Height (TW3 Method). 3rd ed. London: Saunders, 2001.