Traumatic injuries from travel, unpredictable car accidents, sports-related injuries …… can easily lead to fractures, and after a period of treatment, the patient is overshadowed by osteochondrosis and osteomyelitis. The 80-year-old Master Li has been resting in bed after an accidental femur fracture six months ago, but half a year has passed and the fracture site is still vaguely painful, not to mention walking out of bed, and the examination results are alarming to his family: the fracture end still hasn’t healed. This is what is known as “bone discontinuity” in medicine. Bone non-union, also known as fracture non-union, is a condition in which the healing function of the fracture end stops after a fracture, and the fracture end has formed a pseudo-joint, a pseudo-joint or fracture end resorbs and atrophies, making the fracture gap larger, and will not heal without further treatment. The cause of bone discontinuity is generally related to patient factors, local factors, and surgical factors. Older people and those who have suffered from bone metabolic diseases and osteoporosis may have delayed fracture healing or osteoporosis. Of course, some patients do not remove the cast prematurely after surgery under the guidance of the doctor, and premature exercise or weight-bearing may cause the fracture end to be displaced or cause the internal fixation material to break or the screws to loosen, which may not play a stabilizing role and form a pseudo-joint, resulting in bone discontinuity. Some people do not pay attention to the protection of the surgical wound, which can lead to infection. Infection can lead to necrosis of fracture end and soft tissue, and also prolong local congestion time, necrosis and resorption of fracture end will be more obvious, the time of vascular regeneration and reestablishment of blood circulation will be prolonged, the process of bone scab formation and transformation will be disturbed, resulting in delay or stagnation of fracture healing, leading to bone discontinuity. Prevention of infection after sports trauma is the most critical Generally speaking, 3 conditions are required for the occurrence of osteomyelitis: firstly, bacterial virulence, such as fungi, parasites, branchiostoma, mycoplasma, gram-negative or gram-positive bacteria can cause osteomyelitis; in addition, many surgical wounds are infected by bacteria; secondly, after fracture, joint stability is lost, bones and surrounding soft tissues often undergo a sustained inflammatory response, which does not The inflammatory response to unstable fractures can lead to an increase in the area of local destruction and may also eventually contribute to infection. Acute myelitis due to viral infection occurs mostly in young adults, without gender differences, with a sporadic onset and an acute onset. Most of them have mild prodromal symptoms, such as low-grade fever, general malaise or symptoms of upper respiratory tract infection. Cold, overexertion, and trauma are often triggers for the onset of the disease. Surgical treatment of osteochondritis and osteomyelitis The treatment of osteochondritis is difficult and the patient suffers a lot, so the physician must be fully aware of and deal with the medical factors. In addition, attention must be paid to the prevention of osteonecrosis throughout the treatment of fractures. The following points must be noted in fracture treatment: avoid formation of interfracture ends; during fracture fixation, attention should be paid to moving non-braking joints; early repositioning; perfect fixation; non-surgical repositioning method as much as possible; strengthening nutrition; paying attention to medication and avoiding infection. Surgical treatment is currently the most important method for treating osteomyelitis. More than 90% of osteomyelitis can be treated surgically, and the prognosis is good in 80% of cases, mainly including lesion removal, reasonable internal fixation, fracture end compression, compression external fixation, bone grafting and the combined application of each method. Treatment of osteomyelitis depends on the individual case, but active prevention of infection is the key. Most acute septic osteomyelitis is caused by Staphylococcus aureus. It should be treated first with antibiotics that are effective against the bacterium, and antibiotics should be adjusted promptly if the 3-day treatment is not effective. Chronic osteomyelitis requires surgical treatment due to recurrent attacks and long-term non-healing of sinus tracts. After surgery, attention should be paid to the pain and swelling of the affected limb, and joint activities should be performed under the guidance and assistance of the doctor to prevent joint ankylosis and muscle wasting atrophy and restore motor function. After discharge from the hospital, attention should be paid to not strenuous exercise and to adhere to the treatment to prevent recurrence.