I had my leg broken. (2025)

It means that someone (else) broke it, but more than this, it suggests that you asked them to break it. "Have something done" is a passive causative structure. You caused the thing to be done, but someone else (unnamed) actually did it: "I had my car washed," to use a more conventional example.

The most likely sentence in your scenario uses "broken" as an adjective: because my leg was broken.
You can also use "break" as a verb, but in the active voice with "I" as the subject: because I broke my leg. This does not mean that you did it deliberately; it could be an accident.

Glasguensis said:

It means that you ordered someone to break your leg, and this seems unlikely in the context. Here are some possibilities :
…I had a broken leg
…I broke my leg
…my leg was broken

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My leg got broken? Is it correct either?

Glasguensis said:

It’s not idiomatic

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But "I had my leg broken" could also mean that it was an accident(not I myself told someone to break it); that's in accordance to one rule. According to it, I could say, "Dad, I've [gotten/had] my car hijacked!"

Thius existing discussion might be of help: had his arm broken/got his arm broken

Russulae 🍄🍄🍄 said:

But "I had my leg broken" could also mean that it was an accident

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No. Just forget this exists as an option. It's not at all idiomatic for describing having a broken leg.

Uncle Jack said:

It means that someone (else) broke it,

but more than this, it suggests that you asked them to break it.

"Have something done" is a passive causative structure. You caused the thing to be done, but someone else (unnamed) actually did it: "I had my car washed," to use a more conventional example.

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I'm afraid, Raymond Murphy doesn't share this opinion, Uncle Jack

English Grammar in Use, unit 46, D

Yes, that's perfectly correct, but, as others have said, it doesn't work with "I had my leg broken". This implies that you asked/arranged for someone to break your leg.

You must avoid assuming that if a construction works in one context that it will necessarily work in another context.

Russulae 🍄🍄🍄 said:

But "I had my leg broken" could also mean that it was an accident(not I myself told someone to break it); that's in accordance to one rule. According to it, I could say, "Dad, I've [gotten/had] my car hijacked!"

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Rule? No such thing. Too many exceptions. The so-called rules are best considered guidelines.

I agree with everyone. 'I had my leg broken' means you told someone to break your leg and they did. I daresay there are contexts in which you might say that and mean it that, but generally speaking that won't be the case.

heypresto said:

Yes, that's perfectly correct, but, as others have said, it doesn't work with "I had my leg broken". This implies that you asked/arranged for someone to break your leg.

You must avoid assuming that if a construction works in one context that it will necessarily work in another context.

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To piggyback off of this, "I had my leg broken" sounds like something a person for whom English is their second language (or just learning it) might say. Someone from an English-speaking country would not say that they had their leg broken. Even if
done by doctors to reset it, you would probably say, "they had to break my leg to reset it" or "they broke my leg to reset it" not "I had my leg broken by the doctor so they could reset it".

sdgraham said:

Thius existing discussion might be of help: had his arm broken/got his arm broken

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Or even one that is specifically about a broken leg: I was in a skiing accident and had my leg broken.