An evaluation of conservative and operative methods in the treatment of congenital hip dislocation

Area of Science:

• Orthopedic surgery
• Pediatric orthopedics
• Hip joint biomechanics

Background:

• Dislocated hips require prompt reduction to prevent complications.
• Avascular necrosis of the femoral head is a significant risk following hip reduction.
• Various reduction techniques carry different risks of avascular necrosis.

Purpose of the Study:

• To evaluate the efficacy and complication rates of different closed reduction methods for dislocated hips.
• To compare the incidence of avascular necrosis associated with various hip reduction techniques.
• To identify the most successful method for normalizing the hip joint post-dislocation.

Main Methods:

• Comparative analysis of historical and contemporary closed reduction techniques for hip dislocations.
• Evaluation of manual reduction in Lorenz position.
• Assessment of functional reduction using Pavlik harness and overhead extension.
• Review of the fetal position technique (Fettweis and Salter).
• Analysis of outcomes for acetabuloplasty combined with detorsion-varus-osteotomy.

Main Results:

• Manual reduction in Lorenz position is associated with a high rate of avascular necrosis.
• Pavlik harness and overhead extension methods still present a risk of femoral capital necrosis.
• The fetal position demonstrated a reduced incidence of necrosis.
• Acetabuloplasty combined with detorsion-varus-osteotomy showed superior success in normalizing the hip joint.

Conclusions:

• The choice of closed reduction technique significantly impacts the risk of avascular necrosis in dislocated hips.
• The fetal position may be a preferable method for reducing necrosis risk.
• Acetabuloplasty with detorsion-varus-osteotomy represents a highly successful intervention for normalizing the hip joint after dislocation.