Children 1, 2 years old, parents like to hold the hands of children to learn to walk, the family is happy, an enviable landscape, but young parents did not expect the dangers of doing so, because at this time, “pulling the elbow” is coming to your child. Elbow joint by the upper arm humerus distal and forearm ulna, radius proximal constitutes. The proximal end of the radius is the radial tuberosity, which is anchored to the proximal end of the ulna by the annular ligament, side by side. In adults, the head of the radial tuberosity is large and the neck is small, so it is not easy to dislodge the ligament. Infants and young children’s bone development is not yet complete, the radial tuberosity and neck thickness, the annular ligament is also relatively loose, so the radial tuberosity is easy to come out of the ligament. Adults often like to hold a child’s arm when walking with children, adults and children of different sizes, the direction of the pull is not only forward, and upward, if the steps (stairs), adults are pulling the child’s arm upward. Such pulling and tugging may cause the radial tuberosity to slip out and get stuck outside the annular ligament, causing radial tuberosity subluxation. The injury is also known as pulling elbow because it is mostly associated with pulling, and occurs mostly in young children under 5 years of age. In addition to walking and pulling, inappropriate pulling on a child’s elbow while putting on or taking off clothes can cause the same result. This subluxation is also sometimes caused when the child’s arm is lifted up and hanging while playing, and his or her own weight falls down and pulls. Fractures of the forearm in pediatric falls can also be associated with subluxation of the radial tuberosity, and care must be taken to prevent underdiagnosis. Pulling elbow will cause elbow joint pain, inability to move, the onset of the elbow joint is fixed in nearly straight, the forearm mild rotation position, the appearance of neither swelling, nor bruising, only in the radial tuberosity of the area of compression pain, X-ray film no abnormal changes. The physician can make an accurate diagnosis based on a history of pulling, combined with an examination of the symptoms. Treatment is generally not difficult, in all the joint reset pulling elbow reset is the most simple and effective, without any anesthesia, the doctor with one hand to support the child wrist, the other hand to support the elbow joint, the thumb is placed in the radial tuberosity, slightly pulling the forearm, gently rotate forward, while the elbow joint will be flexed. When the reset is successful, the pain disappears and the child stops crying immediately. In order to confirm whether the real reset, candy, toys can be used to tease the child with the injured arm to take, visible elbow joint can be immediately flexion and extension activities. After the reset does not need to be fixed with a plaster, splint, as long as a small triangular towel, the child’s forearm suspended from the neck, keep the elbow joint flexion 90 degrees, 3 ~ 5 days can be. It is worth noting that this disease is easy to reoccur, and inappropriate stretching can cause the same symptoms later. When the radial head is fully developed after ageing, it is less likely to reoccur and will not leave sequelae. If the disease is neglected and treatment is delayed, it will lead to elbow dysfunction and can only be treated surgically later.