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Gradual Deformity Correction in Blount Disease.

Stephanie W Mayer1, Elizabeth W Hubbard, Dan Sun

  • 1Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC.

Journal of Pediatric Orthopedics
|April 11, 2019
PubMed
Summary

This study shows that both Ilizarov and Taylor spatial frames effectively correct Blount disease deformities in children. These external fixation methods significantly improve limb alignment, even after previous surgeries.

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Area of Science:

  • Orthopedic surgery
  • Pediatric orthopedics
  • Biomechanical analysis

Background:

  • Blount disease is a tibial growth disorder causing progressive limb malalignment.
  • Early intervention is crucial to prevent significant deformities.

Purpose of the Study:

  • To evaluate the effectiveness of external fixation in correcting Blount disease.
  • Compare Ilizarov external fixator and Taylor spatial frame (TSF) outcomes.

Main Methods:

  • Retrospective review of 41 patients (51 limbs) treated for Blount disease.
  • Radiographic analysis of MPTA, MAD, and JLCA preoperatively, at frame removal, and final follow-up.
  • Comparison between Ilizarov and TSF treatment groups.

Main Results:

  • Significant improvements in MPTA, MAD, and JLCA were observed post-treatment.
  • Correction was maintained at final follow-up with no significant loss.
  • No significant difference in outcomes between Ilizarov and TSF.
  • Superficial pin-site infection was the most common complication.

Conclusions:

  • Ilizarov and TSF are effective for correcting infantile and adolescent Blount disease.
  • External fixation improves limb and tibial mechanical axes.
  • Successful correction is achievable even in patients with prior surgical interventions.