The gemara in chullin 55b brings from the mishna that an animal remains kosher if the lower jaw was removed. Rabbi Zeira qualifies this law by saying that the animal is only kosher if it can be feed by a person,but if it cannot then the animal is treif.

Is there any idea that if one performs surgery to correct a treif ,or even to have a transplant to correct the treifa then the animal is now considered kosher? Can human intervention correct a treif animal,like the case above?

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