I am not aware of any studies on peripheral neuropathy and psoriatic arthritis. In general, peripheral neuropathy is not a contraindication to joint replacement except in advanced cases when there might be weakness that would affect the stability of the prosthesis. The obvious choices in NC are Duke and UNC both of which have fine rheumatology programs.
About Alan Matsumoto, M.D.
Part-time Faculty, Division of Rheumatology
Johns Hopkins University