YOU SAID:

My knee is not there anymore

INTO JAPANESE

私の膝はもうないです。

BACK INTO ENGLISH

It is no longer my knee.

INTO JAPANESE

それはもはや私の膝ではないです。

BACK INTO ENGLISH

Is not it in is no longer my knee.

INTO JAPANESE

それには、もはや私の膝はありません。

BACK INTO ENGLISH

My knees were no longer in it.

INTO JAPANESE

私の膝はそれではもはやなかった。

BACK INTO ENGLISH

My knee was no longer there.

INTO JAPANESE

私の膝はもはやそこにはなかった。

BACK INTO ENGLISH

My knee was no longer there.