Chiari Osteotomy in the Children: Mid-term Follow-Up Results

Area of Science:

• Orthopedic Surgery
• Pediatric Orthopedics
• Hip Dysplasia Treatment

Background:

• Hip dysplasia in children often requires surgical intervention to improve acetabular coverage of the femoral head.
• The Chiari osteotomy is a salvage procedure for noncongruent hips, aiming to enhance joint stability.
• Assessing the efficacy of the Chiari osteotomy in pediatric hip dysplasia is crucial for optimizing treatment strategies.

Purpose of the Study:

• To evaluate the clinical and radiographic outcomes of Chiari pelvic osteotomy in pediatric patients with hip dysplasia.
• To determine the impact of the Chiari osteotomy on pain, mobility, and walking ability.
• To assess radiological changes, including the vertical center edge (VCE) and high transverse edge (HTE) angles, following the procedure.

Main Methods:

• A case series of pediatric patients undergoing Chiari osteotomy for hip dysplasia was conducted over a 10-year period.
• Clinical outcomes were assessed using the Merle d'Aubigné and Postel score.
• Radiographic outcomes were evaluated using frontal pelvic radiographs to measure key angular parameters.

Main Results:

• The Chiari osteotomy led to statistically significant improvements in pain, mobility, and walking, with a notable increase in the total Merle d'Aubigné and Postel score.
• Radiographic analysis showed a significant gain in the vertical center edge (VCE) angle and a significant loss in the high transverse edge (HTE) angle.
• The procedure demonstrated positive clinical results, particularly in pain reduction, despite its technical complexity.

Conclusions:

• Chiari pelvic osteotomy is an effective surgical option for treating hip dysplasia in children, yielding significant clinical improvements.
• The procedure requires precise surgical technique but provides substantial pain relief and functional enhancement for patients.
• The study highlights the positive impact of Chiari osteotomy on patient-reported outcomes and radiographic parameters in pediatric hip dysplasia.