Does anyone know if one turned out foot in a large breed 7 month old puppy is a construction fault or is it something it is liable to "grow" out of?
Thanks.

It depends really , is is the foot turning out or the elbow to tight that makes the foot turn out, it could be just a puppy phase and will loosen as the pup grows older.
I had a bitch pup at 4 months her foot turned out slightly but her elbow was fine, her front came straight when she was around 6 months and has been fine ever since.
There are many reasons for this which i am sure others will tell you it may just be a case of wait and see.

Peanuts