YOU SAID:

When I was six years old I broke my leg.

INTO JAPANESE

私が6歳の時、私は私の足を壊しました。

BACK INTO ENGLISH

I broke my leg when I was 6 years old.

INTO JAPANESE

私は6歳のときに脚を折った。

BACK INTO ENGLISH

I broke my leg when I was 6 years old.