Implants; surgical implants; orthopaedic implants and prostheses; apparatus, articles and instruments, all for orthopaedic use; surgical instruments; artificial bone and cartilage; stems and heads of prostheses; cups for prostheses; parts and fittings for all the aforesaid goods; screws for securing prostheses; synthetic material for surgical use for coating orthopaedic implants and prostheses; sleeves or thimbles of coating material for prostheses; suture materials