Final answer:
A partial dislocation of the radius bone at the elbow joint results in nursemaid's elbow. A child's arm is frequently injured by pulling or tugging, such as when an adult tugs on the child's hand or forearm.
Step-by-step explanation:
When a child's arm is pulled or tugged violently, the radius bone at the elbow joint partially dislocates, causing nursemaid's elbow. Pulling on a child's hand or forearm by an adult frequently results in this injury. A partial dislocation results in discomfort and restricted movement because it throws the bone out of alignment.
Nursemaid's elbow must be treated immediately; this typically entails a straightforward procedure carried out by a medical practitioner to realign the bone and return normal joint function. Because of their relatively lax ligaments, young children are more likely to suffer from this ailment.