Surgical, medical and veterinary apparatuses, namely, orthopedic fixation devices, implants, and protheses used in implant surgery; orthopedic instruments for implanting fixation devices, implants and prostheses used in implant surgery; medical prostheses; prostheses for implantation in skeletal joints; prostheses for joints of the human body, including hip, knee and shoulder prostheses; acetabular prostheses and acetabular cups; hip prostheses, including neck and stem members; neck devices for implantable stems and having a through passage to receive an insertion tool; surgical instruments for insertion of prostheses; modular prostheses for the hip