Bilateral PFFD usually only requires prosthetic treatment. Children with bilateral PFFD can usually walk well on their own feet, and prostheses are only needed to bring them to the height of their peers. Surgery is not usually recommended because it would destroy the child's ability to walk without the prosthesis. Surgery would only be needed in cases with severe foot deformities that inhibit normal weight bearing.
Almost all bilateral PFFD cases are Aitken Class D (no acetabulum and no femoral head).
To search for others who have bilateral PFFD on the pffd.org site you can go to http://www.pffd.org/profile/pffd_type/Bilateral