I. Introduction
The conventional way of attaching a limb prosthesis to the body is by means of a socket that compresses the soft tissue over the residual limb stump. This attachment method frequently causes problems such as discomfort, dermatologic complications, poor load transfer and retention, and limited range of movement [1]–[5]. It is to address these problems that percutaneous bone-anchored implant systems for direct skeletal attachment of limb prostheses have been developed. A titanium implant is surgically inserted intramedullary into the bone of the residual limb. During a healing period, bone tissue is formed in direct contact with the implant creating a strong mechanical bond between the two [6], [7]. The distal end of the implant extending percutaneously from the end of the residuum allows for direct attachment of the prosthesis, thus eliminating the need for a socket.