subluxation of the radial head
A common pediatric elbow injury where the radial head slips out of the annular ligament, typically occurring in children under 5 years.
Full Definition
Subluxation of the radial head, also known as nursemaid's elbow or pulled elbow, is the most common elbow injury in young children, particularly those between 1-4 years of age. It occurs when the radial head slips out of the annular ligament that normally holds it in place, usually as a result of sudden traction on an extended arm. The mechanism typically involves an adult pulling or lifting a child by the arm, causing the ligament to slip over the radial head. Children present with arm pain, reluctance to move the affected arm, and often hold the arm in a flexed and pronated position. The injury is usually easily reduced with specific manipulation techniques and has an excellent prognosis with no long-term complications.
Usage
Usage note: Commonly called nursemaid's elbow in clinical practice; avoid the term in patient-facing documentation.
In Context
- "The toddler presented with subluxation of the radial head after being pulled up by the arm at the playground." — emergency department note
- "Reduction of the subluxation was successful, with immediate return of normal arm function." — procedure note