35 It was argued before me that the Review Panel had ignored the Guidelines. If the decision that the MVA had not caused the need for a replacement prosthesis was open to it, as I think it was, then there was no need to have regard to the Guidelines. Strictly it is not necessary to consider whether Dr Bodel's approach for the second certificate was flawed, but I shall comment that in my view it was appropriate for Dr Bodel to take into account the existence of a prosthetic hip prior to the MVA. I do not think that the Guidelines should be treated as requiring the existence of a prosthesis prior to the MVA to be ignored. I am inclined to think that the existence of a prosthetic hip is "objective evidence of a pre-existing symptomatic permanent impairment", but if I am wrong in that view and the Guidelines are to be read as producing the result that pre-existing prosthetics are ignored in assessing consequences of an MVA, then in my view it is a result that could not have been intended by the legislature which requires enquiry as to the extent to which a person has suffered permanent impairment caused by the MVA. That enquiry entails, in my view, a comparison of the insured person's medical condition before and after the MVA, both of which in this case involve the existence of a prosthetic hip. I think it can be inferred that Dr Bodel in the first assessment (in which he did specifically refer to the then current Guidelines) did not approach the matter in the way in which I have indicated he ought, but I do not think that Dr Bodel should be taken as ignoring the Guidelines in his second assessment - he had before him notes of Dr Hehir which pointed to pre-MVA symptoms and concerns about the prosthesis, so he very likely did not regard himself as having a basis for ignoring the existence of the prosthesis.