The intramedullary nail is mainly characterized by including a solid nail body, the upper section of which is an externalscrewthread rod and a copulate fixedly pressure-adding screw cap;
它的主要特征是包括实心体钉体，其上段为外螺纺杆及配合的固定加压螺帽；
2
Make the pipes with button head align with the joints of externalthread, rotate the nut and make it align to the center, knock the nut and screw up the nut.