Why can’t you have sex after a fracture, because when you have sex the limbs need to make some different positions, if you are not careful, it will lead to recurrence of the fracture, displacement. Especially for upper limb fracture such as clavicle fracture, even if the fracture is fixed with plate, because it is an irregular long tube fracture, after internal fixation, some strenuous weight-bearing activities such as push-ups, etc., there will still be breakage of plate and screws, and recurrence of fracture is possible. In fractures of the lower limbs, such as femur fracture, if the fracture is not healed during the period of coitus, too strenuous weight-bearing and other activities on the ground after the operation, it will also lead to recurrence of fracture as well as the possibility of plate and screw breakage.