A 3-year-old girl is brought to the clinic because she refuses to use her right arm after her older sibling pulled her by the hand. The elbow is slightly flexed and pronated, and radiographs are normal. Reduction relieves the pain immediately. Which of the following structures was most likely displaced?
- A)Ulnar collateral ligament
- B)Radial collateral ligament
- C)Transverse humeral ligament
- D)Coracoacromial ligament
- E)Annular ligamentGABARITO
Explicação
Nursemaid elbow is caused by radial head subluxation from displacement of the annular ligament after longitudinal traction on a pronated forearm. The normal radiograph and immediate relief after reduction are classic for this injury. Ver explicação completa e trilha adaptativa →