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Main stages of clavicle ossification (stage 1: non-ossified epiphysis; stage 2: isolated ossified epiphysis; stage 3: partial bony fusion between epiphysis and metaphysis; stage 4: complete bony fusion between epiphysis and metaphysis with definable epiphyseal scar; Stage 5: complete bony fusion between epiphysis and metaphysis without visible epiphyseal scar)
