How would I say calf muscle

How would I say calf muscle please, the translator says “Cyhyryn croth y goes” = leg crotch muscle, if I leave out the croth it then translates to leg muscle, I was wondering if I can omit the croth?
I’m trying to say “I have hurt my calf muscle”

As you said if you leave out “croth” then it’s just a leg muscle, if you want to specifically say calf then you’ll need to say croth y goes or, of course, cyhyr croth y goes for calf muscle.

I’ve just seen in the dictionary that calf strain is “ysigo croth y goes” which, I think, sounds great.

That’s great, thank you, I like the sound of that too lol