In the last decade, several evolutionary improvements have been made in the total hip replacement procedure and prosthesis.

在过去十年中，一些进化改进已在全髋关节置换术的程序和假肢。

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Primary root resorption is a physiological event for the primary teeth and plays an important role during normal replacement procedure.

乳牙根吸收是一种生理现象，在乳牙的正常替换过程中具有重要意义。

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The procedure, which preserves more thigh bone than in a conventional hip replacement, is aimed at younger, more active patients who may need several hip replacements in their lifetimes.

目前这种手术的对象主要是年纪较青、活动量大的患者，这些患者在他们有生之年中或许需要进行几次髋关节置换手术。

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Fearing for her health, Conger decided to empty her savings and travel to England for the disc replacement procedure.

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One patient who was preparing for a heart valve replacement seemed slightly calmer after her surgeon showed her an intraoperative video of the procedure.

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