The tunnel disappears after the screw is absorbed, avoiding the ligament's bump toward the inside tunnel, which leads to gradual extension of the inside tunnel and cause the ligament flabby.

隧道内口可吸收螺钉挤压固定，愈合后内口消失，可避免韧带撞击内口使之逐渐扩大引起重建韧带松弛。

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Tapping is the process of cutting a thread inside a hole so that a cap screw or bolt may be threaded into it.

攻丝是在一个孔中车出螺纹，以便装上有帽螺钉或螺栓。

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