Section 888.3400 - Hip joint femoral (hemi-hip) metallic resurfacing prosthesis(a)Identification. A hip joint femoral (hemi-hip) metallic resurfacing prosthesis is a device intended to be implanted to replace a portion of the hip joint. This generic type of device includes prostheses that have a femoral resurfacing component made of alloys, such as cobalt-chromium-molybdenum.(b)Classification. Class II.