forgot to say, if you get a diagnosis from your vet as to the cause of the lameness remember to ask if this is definitely, or likely to have been, a condition that was present when you bought the horse. And whether the vet would be prepared to say that in court. This helps with any case you may bring against the seller or the other vet. Also if the vet says the condition is definitely not a pre-existing condition, that it came about after you bought the horse, then your horse insurance may pay for treatment.