A knee joint lock is arranged on the knee joint to provide stability and safe feeling to patients when patients walk and sit.

在膝关节上设置了膝关节锁，使患者在行走与坐恣情况下均能有稳定与安全感。

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The Saracens lock was Johnson's leader for the first 20 Tests of his tenure before a knee injury forced him to miss the Six Nations finale against France.

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Edinburgh were forced into two late changes, with Scott MacLeod replacing Jim Hamilton (knee) at lock, and John Houston coming onto the wing for Andrew Turnbull (illness).

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Wing Craig Moir (knee) and lock Jon Phillips (hamstring) are among the serious doubts.

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