Figure 2.

Time trend of the bone maturation process of the tibial tuberosity in (A) female and (B) male participants. Among female participants, 59.2% were already in stage E by 10 years of age; almost all females were in stage E or B by 12 years, and 47.4% were skeletally mature (stage B) at 14 years. Among male participants, conversely, only 8.0% were in stage E at 10 years of age; 40.6% of males were still in stage C or stage A by 12 years, and 86.2% were in still in stage E at 14 years.