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Zorluk: KolayPediatric Musculoskeletal Disorders

A 4-year-old boy is brought to the clinic by his parents due to a right-sided limp that began this morning. He refuses to bear weight on his right leg. His parents report that he had a mild upper respiratory tract infection one week ago that resolved without treatment. He has no history of trauma. Temperature is 37.1°C (98.8°F), blood pressure is 100/60 mm Hg, pulse is 98/min, and respirations are 20/min. Physical examination shows a well-appearing, playful boy. There is pain with internal rotation and abduction of the right hip, but no visible erythema, swelling, or warmth over the joint. Laboratory studies show:

Leukocyte count: 9,000/mm³
Erythrocyte sedimentation rate (ESR): 15 mm/h
C-reactive protein (CRP): 5 mg/L

Which of the following is the most appropriate next step in management?

  1. Ibuprofen and outpatient observationCevap
  2. B
    Urgent ultrasound-guided hip aspiration
  3. C
    Intravenous ceftriaxone and vancomycin
  4. D
    Magnetic resonance imaging of the right hip
  5. E
    Application of a spica cast

Cevap

The most appropriate next step in management is to prescribe ibuprofen and observe the patient in the outpatient setting.
The correct answer is conservative management with ibuprofen and outpatient observation because the clinical picture is classic for transient synovitis. The child is well-appearing, afebrile, has a history of a recent viral upper respiratory infection, and has normal inflammatory markers (WBC, ESR, CRP). According to the Kocher criteria, having only 1 out of 4 predictors (non-weight-bearing) gives a very low probability (<3%) of septic arthritis. Therefore, supportive care is the definitive next step.

Adım Adım Çözüm

1
Evaluate the patient's clinical presentation and vital signs.
The patient is a well-appearing 4-year-old boy with acute hip pain, a recent viral illness, normal temperature, and refusal to bear weight.
Identifying the age, preceding illness, and absence of fever points away from a severe bacterial infection and toward a post-infectious inflammatory process.
2
Analyze the laboratory results against the Kocher criteria.
WBC is 9,000/mm³ (normal), ESR is 15 mm/h (normal), and CRP is 5 mg/L (normal). Only one Kocher criterion (non-weight-bearing) is met.
The Kocher criteria differentiate septic arthritis from transient synovitis. A low score (1/4) indicates a very low probability of septic arthritis.
3
Determine the most appropriate management plan based on the likely diagnosis.
The diagnosis is transient synovitis. The correct treatment is supportive care with nonsteroidal anti-inflammatory drugs (NSAIDs) and observation.
Transient synovitis is a benign, self-limited condition that resolves completely with conservative management.

Anahtar Kavram

Transient synovitis is the most common cause of acute hip pain in children aged 3-8 years and is managed conservatively with NSAIDs and observation when Kocher criteria indicate a low probability of septic arthritis.
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Pediatric Musculoskeletal Disorders

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