适用标准 ◎YY0018- 2008《骨接合植入物金属》; ◎YY/T0662- 2008《外科植入物不对称螺纹和球形下表面金属的金属 机械性能要求和试验方法》; ◎ISO 6475:1989 《Implants for surgery - Metal bone screwswith asymmetrical thread and spherical under- surface - Mechanical requirements and test methods》; ◎ASTM F543- 02《Standard Specification and Test Methodsfor Metallic Medical Bone Screws》。