What is the recommended management for a 3‑year‑old girl with recurrent hip dislocation?

Recurrent Hip Dislocation in a 3-Year-Old Girl

A 3-year-old girl with recurrent hip dislocation requires immediate orthopedic referral for surgical intervention, as this represents either failed developmental dysplasia of the hip (DDH) treatment, late-presenting DDH, or habitual dislocation—all of which necessitate open reduction with femoral shortening and possible pelvic osteotomy.

Clinical Context and Urgency

At 3 years of age with recurrent dislocations, this child has missed the window for successful non-operative management. Surgical intervention is typically reserved for children with severe dysplasia or dislocation, late presentation or diagnosis, or failed nonoperative management 1. This patient clearly falls into one or more of these categories.

Diagnostic Approach

Imaging

• Obtain pelvic radiography immediately as the primary diagnostic modality 1
• At 3 years old, the femoral head ossific nucleus is well-established, making radiography superior to ultrasound for assessment
• Radiographs will evaluate:
  • Femoral head ossific nucleus position
  • Proximal femoral development
  • Bony acetabular morphology
  • Acetabular index (should be decreasing from newborn value of 30°)

Clinical Examination Findings to Document

• Limited hip abduction (most important screening finding in older children) 1
• Leg length discrepancy (shortening on affected side)
• Asymmetric skin folds (though non-specific)
• Gait abnormalities, including Trendelenburg gait

Treatment Algorithm

Surgical Management (Primary Recommendation)

One-stage operative procedure is the standard of care for children aged 1-3 years with hip dislocation 2, 3:

1. Open reduction (closed reduction has failed or is inappropriate at this age with recurrent dislocations)
2. Femoral shortening (performed in all cases to reduce tension on neurovascular structures and facilitate stable reduction)
3. Pelvic osteotomy (if acetabular dysplasia is present)

Expected Outcomes

Long-term follow-up data shows:

• 52% achieve Severin class I radiographic results
• 78% achieve class I or II results (good to excellent)
• Mean Iowa Hip Score of 92 points
• Average leg-length discrepancy <1 cm
• 22% risk of proximal femoral growth disturbance 2

Critical Pitfalls to Avoid

Do NOT Attempt Non-Operative Management

• Pavlik harness efficacy decreases with age and can only be used up to 6 months of age with success rates of 67-83% 1
• At 3 years old, this option is contraindicated
• Delayed treatment increases risk of:
  • Avascular necrosis (AVN) of femoral head
  • Permanent acetabular deformity
  • Chronic instability requiring more complex reconstruction

Recognize Special Considerations

• If the child has Down syndrome or other connective tissue abnormalities, habitual (voluntary) dislocation may be the etiology 4, 5
• This may require capsular plication in addition to standard procedures
• Even in habitual dislocation, surgical stabilization is ultimately necessary

Monitoring and Follow-Up

Post-operatively, this child requires:

• Minimum 2-year surveillance for AVN 6
• Serial radiographs to assess:
  • Acetabular remodeling
  • Femoral head development
  • Growth disturbances
• Long-term follow-up through skeletal maturity (mean 18+ years in studies) 2

Prognosis

With appropriate surgical intervention at age 3, most children achieve normal hip function during childhood 2. The remodeling potential of the acetabulum remains good in this age group, though outcomes are superior when treatment occurs earlier. These patients maintain the potential for straightforward reconstructive procedures should they develop degenerative arthritis in adulthood 2.

The key is immediate orthopedic referral—do not delay, as each recurrent dislocation episode increases the risk of cartilage damage, AVN, and poor long-term outcomes.