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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Measurement of cartilage thickness at the tibial tuberosity for each maturity stage. The cartilage thickness at the tibial tuberosity is estimated by the largest diameter of the true circle drawn in the space of the apophyseal cartilage.