I forgot to include the following sentences. I have to check the various alternatives.I believe plaster is the British for cast.
1) I fell off my bike and I broke my leg.
2)The surgeon put it in a cast (in plaster).
3)He put a cast on my leg.
He casted (???) it/ He plastered it.
4)I had it in a cast/in plaster for a month.
5)I had to take the cast for a month.
I had to keep the cast for a month
1) I fell off my bike and broke my leg.
2)The surgeon put it in a cast.
3)He put a cast on my leg.
4)My leg was in a cast for a month.
5)I had to have the cast on for a month.
I had to keep the cast on for a month