Chicken legs

We took Ruben back to the vet as he has still be limping and holding his leg up a lot. They kept him in to sedate and investigate. Upshot and £600 later (he is insured thank dog) is that they couldn't really find anything! A grass seed was discussed but not found although apparently they travel so it could still a thing. He's got antibiotics, anti inflammatories and pain killers now so as well as becoming a drugs lord we have to bathe his feet in soapy salt water for a week and hope that by next week he is better. If not then it's back to vets and looking at an MRI which could be as much as a small car! One day at a time - as with so many things. 
He was a bit moody when he got back, understandably.