逐渐，当新的骨头成长被形成填补空白，医生使用一个腿加长的设备延长骨头。
Gradually, the doctors use a leg lengthening device to stretch out the bones as new bone growth is formed to fill the gap.
逐渐，当新的骨头成长被形成填补空白，医生使用一个腿加长的设备延长骨头。
Gradually, the doctors use a leg lengthening device to stretch out the bones as new bone growth is formed to fill the gap.
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