For lower limb amputees, the socket fit is crucial to allow proper use of the prosthetic. Osseointergration has become more widely known and accepted. In this paper, it is referred to under the title bone-anchored prostheses (BAPs). 2 types are identified: those where a) screw and b) press-fit is used. There is a great deal of speculation as to the advantages of the press-fit BAP, however, the authors have found no other studies which investigate these claims, nor the specific benefits over another socket type. This paper outlines the protocol to be followed in a 5-year study to identify different outcomes for persons with amputation who use such osseointergration.