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Does gradual weaning improve outcomes after successful Pavlik harness treatment in developmental hip dysplasia? A
Soner Kocak1, Sabri Kerem Diril2, Mustafa Caliskan2
1Department of Orthopaedic and Traumatology, University of Health Sciences, Istanbul Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey. dr.sonerkocak@gmail.com.
Insights
Discontinuing the Pavlik harness for developmental dysplasia of the hip (DDH) using immediate cessation or gradual weaning shows similar recurrence and AVN rates. Gradual weaning may slightly improve acetabular development but warrants caution for potential vascular risks.
Area of Science:
- Pediatric Orthopedics
- Developmental Dysplasia of the Hip Management
Background:
- The Pavlik harness is a standard treatment for developmental dysplasia of the hip (DDH) in infants.
- Optimal strategies for discontinuing the Pavlik harness after successful hip reduction are debated.
- This study compares immediate cessation versus gradual weaning with a Frejka pillow.
Purpose of the Study:
- To compare clinical and radiological outcomes of immediate Pavlik harness cessation versus gradual weaning with a Frejka pillow.
- To evaluate recurrence rates, acetabular index (AI), lateral center-edge angle (LCEA), and avascular necrosis (AVN) incidence.
- To inform evidence-based guidelines for DDH treatment discontinuation.
Main Methods:
- Retrospective analysis of 144 infants (166 hips) with DDH treated between 2012-2023.
- Two groups: immediate Pavlik harness cessation (Group A) and gradual weaning with Frejka pillow (Group B).
- Radiological assessment included AI, LCEA, and AVN (Kalamchi-MacEwen classification) up to age five.
Main Results:
- No significant differences in recurrence rates (9% vs. 5%) or AVN incidence (6.25% vs. 10%) between groups.
- Group B showed a trend towards higher LCEA at five years (p=0.08), suggesting potential acetabular development benefits.
- A slightly increased AVN rate in Group B raises concerns about prolonged abduction.
Conclusions:
- Both immediate cessation and gradual weaning protocols for Pavlik harness treatment yield comparable DDH recurrence and AVN outcomes.
- Gradual weaning may offer marginal benefits in acetabular development but requires further investigation due to potential vascular risks.
- Larger prospective studies are needed to establish standardized discontinuation guidelines for DDH management.
Introduction:
The Pavlik harness is the standard first-line treatment for developmental dysplasia of the hip (DDH) in infants younger than six months. However, the optimal strategy for discontinuation after successful hip reduction remains debated. This study aimed to compare clinical and radiological outcomes between immediate discontinuation and gradual weaning using the Frejka pillow following successful Pavlik harness treatment.
Methods:
We retrospectively analyzed data from 144 infants (166 hips) with DDH treated with the Pavlik harness between 2012 and 2023. Patients were categorized into two groups: Group A underwent immediate cessation, while Group B was gradually weaned using a Frejka pillow. Radiological follow-up included acetabular index (AI), lateral center-edge angle (LCEA), and assessment of AVN based on the Kalamchi-MacEwen classification, up to five years of age.
Results:
The two groups were demographically similar. There were no statistically significant differences in recurrence rates (Group A: 9%, Group B: 5%; p = 0.53) or AVN incidence (Group A: 6.25%, Group B: 10%; p = 0.55). Group B showed a non-significant trend toward higher LCEA values at five years (p = 0.08), potentially indicating better acetabular development. However, the slightly increased AVN rate in this group raises concerns regarding prolonged abduction.
Conclusion:
Both immediate discontinuation and gradual weaning protocols yield comparable outcomes in terms of recurrence and AVN. While gradual weaning may offer marginal benefit in acetabular development, the potential vascular risks warrant further investigation. Larger prospective studies are needed to establish standardized discontinuation guidelines in DDH management.
Level Of Evidence:
III, retrospective comparative study.
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