The reasons for recurrence of osteomyelitis after more than 40 years of cure may be related to incomplete treatment, poor resistance of the body and insufficient local blood supply. 1. Incomplete treatment: Doctors will use debridement surgery to remove the inflammatory bone of patients, and then use antibiotics to kill a large number of bacteria, but if the disease-causing bacteria are not completely killed, coupled with a certain degree of resistance to antibiotics in the process of using, which may lead to the recurrence of osteomyelitis. 2. Poor body resistance: Osteomyelitis is caused by bacterial invasion, such as malnutrition, colds, diabetes, kidney disease, etc., the body’s function deteriorates, bacteria can easily invade the body, leading to the rapid growth of pathogenic bacteria, which can lead to the recurrence of osteomyelitis. 3. Insufficient local blood supply: the blood supply around the osteomyelitis lesion is reduced, which can’t transport the white blood cells into the lesion, which can also lead to the recurrence of osteomyelitis. Osteomyelitis patients are advised to pay attention to a balanced diet in daily life, eat more vegetables and fruits, supplement proteins and vitamins to improve immunity, and avoid abrasions when exercising.