Author's reply to "how to use the load-sharing classification of spine fractures?" Letter to the Editor of J. Jiang et al. regarding "progressive kyphotic deformity in comminuted burst fractures treated non-operatively: the Achilles tendon of the Thoracolumbar Injury Classification and Severity Score (TLICS)" by Tobias A. Mattei, Joseph Hanovnikian, Dzung H. Dinh. Eur Spine J. 2014; doi 10.1007/s00586-014-3312-0 : Avoiding misleading randomization of apples, oranges and other citruses: the necessity of proper evaluation of comminution in classification systems of thoracolumbar fractures.