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Zorluk: KolayPediatric Musculoskeletal Disorders

A 2-year-old girl is brought to the pediatric urgent care clinic by her mother due to sudden right arm pain. Approximately one hour ago, while walking in the park, the child stumbled. To prevent her from falling, the mother reflexively pulled the child up by the right hand. The child immediately began crying and has since refused to move her right arm. Vital signs are within normal limits. On physical examination, the patient is calm when undisturbed but holds her right arm adducted against her body, slightly flexed at the elbow, and pronated. There is no visible swelling, erythema, or deformity of the clavicle, shoulder, elbow, or wrist. Palpation of the radial head elicits mild tenderness. Which of the following is the most appropriate next step in management?

  1. A
    Obtain an anteroposterior and lateral radiograph of the right elbow
  2. B
    Administer intravenous antibiotics and obtain a blood culture
  3. Perform hyperpronation of the right forearmCevap
  4. D
    Apply a posterior long-arm splint and arrange orthopedic follow-up
  5. E
    Reassure the parent that this behavior is a normal developmental variant

Cevap

Perform hyperpronation of the right forearm
The patient's presentation of a traction injury to the arm followed by holding the limb flexed and pronated is the classic hallmark of radial head subluxation (Nursemaid's elbow). This occurs when the annular ligament slips over the radial head and becomes interposed in the radiohumeral joint. It is a clinical diagnosis. The most appropriate next step is manual reduction, which is most effectively achieved by hyperpronation of the forearm (or alternatively, supination with elbow flexion). Relief of pain and return of function is usually rapid.

Adım Adım Çözüm

1
Identify the key clinical features and mechanism of injury in the vignette.
A 2-year-old child presents with arm pain and pseudoparalysis after being pulled by the hand, holding the arm flexed and pronated.
Recognizing the classic 'axial traction on an extended arm' mechanism establishes the most likely diagnosis.
2
Formulate a diagnosis based on the clinical presentation.
The diagnosis is radial head subluxation, commonly known as Nursemaid's elbow.
Traction allows the annular ligament to slip over the radial head and become entrapped in the radiohumeral joint.
3
Determine the appropriate management for the established diagnosis.
Immediate manual reduction using hyperpronation (or supination with flexion) is the definitive treatment.
Because this is a straightforward clinical diagnosis without signs of fracture (e.g., severe focal swelling or deformity), imaging is not needed prior to attempting reduction.

Anahtar Kavram

Diagnosis and management of radial head subluxation (Nursemaid's elbow)
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Pediatric Musculoskeletal Disorders

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