十字韧带也称交叉韧带，是膝关节内的重要稳定结构。膝关节的稳定性依赖四条韧带来维持，即两条内外侧韧带和两条十字韧带。内外侧韧带分别在膝关节的内外侧；十字韧带在膝关节的内部，分别称为前十字韧带（ACL）和后十字韧带（PCL）。
到医院一检查：后十字韧带撕裂！
To the hospital for a check: posterior cruciate ligament tear!
这将导致十字韧带撕裂扭曲，有时部分或全部。
This causes the cruciate ligament to twist and sometimes tear partially or completely.
先前有报道说这位二十七岁的射手准备在四月份复出，他是在去年夏天由于十字韧带撕裂而退出比赛的。
Reports had suggested the 27-year-old was set for a comeback in April having been sidelined with a cruciate knee ligament injury since last summer.
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