The MC-implantation instruments of PC-type cemented hip-joint prostheses can be used for implanting the PCN-type cementless hip-joint prostheses, except the series of acetabular reamer heads and trial acetabular inserts. The instrument set is completed with the acetabulum strike-in tool and acetabular-insert lifter. The resized acetabular milling heads and trial acetabulums – compared with the cemented ones – can be used for forming and determining the accurate size and shape of the accomodating cavity of the „press-fit” acetabulums.