First of all, I would like to tell you a little story: The lively little Mengmeng (2 years old) and her mother were shopping hand in hand when they suddenly saw a small bottle on the ground and wanted to squat down to pick it up. After understanding the condition and examining the patient, I diagnosed: left radial small head subluxation, also known as “pulling hand”. After the diagnosis, the diagnosis was: left radial head subluxation, also known as “pulling hand”. The case was solved in 3 seconds with the help of manual repositioning (you can hear the click). In fact, similar cases are often encountered in daily life, so don’t panic, and today we will popularize the “pulling elbow”. Radial tuberosity subluxation, also known as pulling elbow, is one of the common elbow injuries in infants and children. The age of onset is 1 to 4 years old, with the highest incidence at 2 to 3 years old, accounting for 62.5%. The disease is more common in boys than in girls, and more on the left side than on the right side. Why are infants and young children prone to radial tuberosity dislocation? In children under 4 years old, the radial head is not yet developed and the annular ligament at the neck of the radius is still a weak fibrous membrane. Once the child’s forearm is lifted, the radial head will slip distally; when it is restored to its original position, the upper part of the annular ligament will not be retracted and will be stuck in the brachio-radial joint, which is called radial head subluxation. As the child grows up, the radial head develops well and the annular ligament thickens and strengthens, so that radial head subluxation will not occur again in general. So, how do parents find out that their baby may have a “radial head subluxation”? 1.Baby cries out for pain: When sudden and severe pain occurs, the baby will cry out instantly, and older children will tell their parents that “the whole arm” is in pain. 2.Refusing to touch: In order to relieve the pain, the baby will try not to move the injured arm and will refuse to be touched by others. 3.Bend the affected arm: The baby will keep the injured arm in a semi-flexed position. There is usually no swelling. How to deal with: Ice, temporary immobilization, immediately seek help from the nearest orthopedic surgeon. In general, the diagnosis of radial head subluxation is not difficult, with a clear history of pulling injury, pain in the child’s elbow area, crying, inability to lift or fetch objects on the injured side, and pressure pain at the radial head can be diagnosed. In general, radial head subluxation does not require surgery, and only requires manual repositioning. After successful repositioning, the child’s pain will be relieved, the crying will stop, and the affected side will be able to lift the hand, feel the ear, and lift the higher action. Parents should note that the repositioning technique is simple but also very specialized, and it is not recommended that parents reposition the child on their own to avoid secondary injury or delay. It is not recommended that parents reset the ear themselves to avoid secondary injury or delay. However, parents should be cautioned not to pull violently to avoid recurrence of radial head dislocation.