Medial epiphysiolysis in severe infantile tibia vara

Area of Science:

• Orthopedic surgery
• Pediatric orthopedics
• Pediatric bone growth disorders

Background:

• Advanced infantile tibia vara (ITV) with proximal medial physeal dysfunction can lead to recurrent varus deformity and limb shortening after valgus osteotomy alone.
• Langenskiöld grade III or greater lesions often present with growth arrest-like features, complicating treatment.
• Epiphysiolysis offers a potential alternative to restore symmetric tibial growth and prevent complex secondary procedures.

Purpose of the Study:

• To evaluate the efficacy of epiphysiolysis of the proximal medial tibia combined with valgus osteotomy in treating advanced infantile tibia vara.
• To identify patient factors influencing the success of this combined surgical approach.

Main Methods:

• A retrospective review of 24 patients (5-10 years old) with 27 affected tibiae who underwent proximal medial tibial epiphysiolysis and valgus osteotomy.
• Analysis of surgical outcomes, focusing on growth restoration and recurrence of varus deformity.

Main Results:

• The combined procedure demonstrated over 80% success in restoring growth and preventing varus recurrence in children younger than 7 years.
• Patients older than 7 years, those with undercorrected mechanical axis, or with prior failed surgeries had a lower likelihood of benefiting from epiphysiolysis.

Conclusions:

• Epiphysiolysis combined with valgus osteotomy is a successful treatment for advanced ITV in younger children (<7 years).
• Alternative surgical strategies should be considered for older children, those with undercorrected alignment, or those with a history of failed surgical interventions.