Spare-part surgery.
D001186:Artificial Limbs; D001187:Artificial Organs; D006355:Heart-Lung Machine; D006801:Humans; D016030:Kidney Transplantation; D016031:Liver Transplantation; D009985:Orthopedics; D010138:Pacemaker, Artificial; D013514:Surgical Procedures, Operative; D014181:Transplantation Immunology; D014184:Transplantation, Homologous