A fracture of the bone cortex is a bone fracture if it is partial, and a fracture if it is complete, as follows: First, a partial fracture of the bone cortex with some of the bone cortex remaining continuous is clinically considered a bone fracture, i.e., an incomplete fracture. The patient may have swelling and pain, but there is no fracture or deformity, which can be confirmed by taking X-rays, and some patients need to undergo CT scan. Secondly, if a complete fracture of the bone cortex occurs, it is clinically considered a complete fracture, which is easily diagnosed on radiographs. In most cases, the fracture is unstable and requires manipulation, external fixation in plaster or splinting, and internal fixation with incision or external bracing for difficult fracture repositioning.