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Difficulty: MediumPediatric Musculoskeletal Disorders

A full-term female infant is delivered vaginally from a breech presentation. The mother has a positive family history of developmental dysplasia of the hip (DDH). The pediatrician is discussing the long-term evaluation and potential treatment plan for this condition with the parents. Assuming the patient will require the complete spectrum of standard medical intervention due to progressive or refractory disease, arrange the following steps in the chronological sequence they would be appropriately performed, starting from birth and progressing through late infancy.

  1. 1Physical assessment utilizing Barlow and Ortolani maneuvers
  2. 2Screening ultrasonography of the hips
  3. 3Application of a Pavlik harness
  4. 4Closed reduction and spica casting

Answer

The correct sequence is: Physical assessment utilizing Barlow and Ortolani maneuvers, followed by Screening ultrasonography of the hips, then Application of a Pavlik harness, and finally Closed reduction and spica casting.
The evaluation and management of developmental dysplasia of the hip (DDH) follow a strict chronological sequence based on the infant's age and anatomical development. All newborns are screened at birth with physical exam maneuvers (Barlow and Ortolani). Infants with high-risk factors (e.g., breech presentation) require a screening ultrasound at 4 to 6 weeks, intentionally delaying slightly to avoid false positives from transient physiological laxity. If DDH is diagnosed, early intervention (under 6 months) utilizes a Pavlik harness to dynamically stabilize the hip. If the harness fails or the child presents later (6 to 18 months), treatment escalates to closed reduction and spica casting under anesthesia.

Step-by-Step Solution

1
Evaluate the newborn at birth.
Barlow and Ortolani maneuvers are performed.
Universal screening begins in the nursery to detect gross dislocations or instability before the infant goes home.
2
Perform screening imaging for the high-risk infant.
An ultrasound of the hips is obtained at 4 to 6 weeks of age.
Breech presentation is a major risk factor requiring imaging. Ultrasound is preferred before 4-6 months due to unossified femoral heads, but is delayed until 4 weeks to avoid false positives from normal physiologic laxity.
3
Initiate first-line treatment upon confirmed diagnosis.
A Pavlik harness is applied.
For infants under 6 months with confirmed DDH, this harness dynamically maintains hip flexion and abduction to promote normal acetabular development.
4
Escalate treatment for refractory disease.
Closed reduction and spica casting is performed.
This is indicated when the Pavlik harness fails to achieve reduction or in late-presenting cases, typically in children older than 6 months.

Key Concept

Developmental Dysplasia of the Hip (DDH): Screening and Escalation of Management
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Topics

Pediatric Musculoskeletal Disorders

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