Should a comma come before "by" when using passive voice? Like in this sentence:

Fractures are best treated by plates.

  • It would normally be "Fractures are best treated with plates".
    – Hot Licks
    Commented Mar 25, 2020 at 2:12

1 Answer 1


No, as you are not writing a list or needing to pause the reader for a better understanding of that partial sentence. Hope this is helpful.

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