Medical and surgical apparatus and instruments; implants; surgical implants; orthopaedic implants and prostheses; apparatus, articles and instruments, all for orthopaedic use; exoprostheses and orthopaedic implants of artificial materials, and parts therefor; femur neck endoprostheses and hip stem endoprostheses for artificial hip joints; medical and surgical instruments for orthopaedic prostheses, implants, ortheses, and for exoprostheses; stems and heads of prostheses; cups for prostheses; ...