If the plain radiographs of the patient indicate that the fracture end has a scab but the fracture line is clear, there may be several scenarios: First, the patient is in the early stages of fracture recovery, such as about 2 weeks after the fracture. At this time, the patient may have a partial growth of bone scab at the fracture end, but there is still no continuous bone trabeculae passing through the fracture end, resulting in a fracture line that is still clear on plain radiographs. Second, it is also seen when the patient has poor fracture healing, for example, when the fracture is delayed or does not heal, there may be a large amount of bone scab growth around the fracture end, but the fracture line is still very clear, and this situation will persist. Third, it is also common for patients to have a secondary fracture during the fracture recovery process, such as when the patient has grown a large amount of bone scabs, but then suffers a traumatic injury that causes the fracture end to break again, which will make the fracture line very clear.