YOU SAID:

My knees are prone to suffering

INTO JAPANESE

私の膝は苦しみやすい

BACK INTO ENGLISH

My knees are painful

INTO JAPANESE

膝が痛い

BACK INTO ENGLISH

My knee hurts

INTO JAPANESE

もうやだー　疲れたよー 膝が痛いよう

BACK INTO ENGLISH

And my knee hurts.

INTO JAPANESE

もうやだー　疲れたよー 膝が痛いよう

BACK INTO ENGLISH

And my knee hurts.