Objective To analyze the causes of reducing postoperative infection after joint replacement and to observe the prophylactic mangement measures.Methods Totally 309 patients with total joint replacements of Yantaishan hospital of Yantai city were selected and divided into improving before group(94 cases) and improving group(215 cases).The speciments for bacterial culture were taken from the hands of the operation surgeon,the scrub nurse and the air flow in the operation room for all cases.The growth of bacter...