A fracture that does not heal for longer than expected is referred to as delayed healing. The time to healing varies from site to site, and this time criterion is usually 3-6 months. The AAOS diagnostic criteria is that no significant signs of healing of the fracture are seen at least 9 months after the fracture, or 3 consecutive months of dynamic observation. Recognition of steel plate fracture: Fatigue fracture of the internal fixation occurs when the magnitude and intensity of limb movement exceeds the load limit that the internal fixation can withstand. If the fracture does not heal, the strongest fixation will fracture. The quality of internal fixation has gradually improved with the advancement of casting and processing technology. Plate fracture due to quality of internal fixation is very rare. Self-diagnosis of bone discontinuity: pain and abnormal movement of the affected limb even after 5-6 months of fracture is highly suspected and a hospital visit is recommended. What to look for in a slow healing fracture: 1. What to do if healing is delayed Delayed healing can usually be obtained by brace fixation or other conservative treatment methods. This should be followed by a review in the hospital and, according to the doctor’s recommendation, wearing an auxiliary brace, which can be combined with local treatment such as shock waves to promote fracture healing. It should be noted that weight-bearing exercises should be strengthened or reduced according to the fracture site and fixation. (1) Removal of unstable internal fixation; (2) Treatment of the fracture end by opening the medullary cavity of the fracture end and decortication to improve blood flow; (3) Treatment of the bone defect: techniques such as bone grafting, bone grafting with vascular tips, and bone relocation techniques can be used; (4) Local biological stimulation to promote healing, including autologous bone grafting, application of biological (4) local biological stimulation to promote healing, including autologous bone grafting, application of biological factors to reconstruct the blood supply, such as BMP, bone marrow blood, and even stem cell therapy; reconstruction of adequate soft tissue coverage; (5) implementation of strong internal fixation; (6) in case of infected bone discontinuity, treatment of infectious factors: debridement of infected necrotic bone and soft tissue, systemic and local antibiotics; in conclusion, bone discontinuity is not terrible, but its treatment needs to be formalized and standardized.