The latter technique requires specialized training and equipment, and is often associated with complications including pin-track infections and nonunion.

而骨延长术需要特殊的技术和设备，并且往往会引起针道的感染和骨不连。

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The latter technique requires specialized training and equipment, and is often associated with complications including pin-track infections and nonunion.

而骨延长术需要特殊的技术和设备，并且往往会引起针道的感染和骨不连。

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