Adolescent tibia vara: alternatives for operative treatment

Area of Science:

• Orthopedic surgery
• Pediatric orthopedics
• Biomechanical analysis

Background:

• Adolescent tibia vara is a condition affecting bone alignment in the lower leg.
• Obesity can complicate the management of orthopedic conditions.
• Long-term outcomes of surgical interventions for tibia vara require further investigation.

Purpose of the Study:

• To evaluate the effectiveness of lateral tibial hemiepiphyseodesis and proximal tibial osteotomy in correcting adolescent tibia vara in obese patients.
• To assess the long-term mechanical alignment and patient outcomes after surgical correction.
• To compare the outcomes of different surgical techniques.

Main Methods:

• Retrospective review of fifteen obese patients with adolescent tibia vara (twenty-one extremities) followed for at least two years.
• Analysis of mechanical alignment (excellent, fair, poor) based on defined criteria.
• Evaluation of outcomes after initial management (lateral tibial hemiepiphyseodesis or proximal tibial osteotomy) and any secondary procedures.

Main Results:

• Initial lateral tibial hemiepiphyseodesis in nine patients (eleven extremities) resulted in excellent alignment in 30% (three of ten) after skeletal maturity.
• Secondary procedures improved alignment in four extremities initially rated as poor or fair.
• Proximal tibial osteotomy in six patients (six extremities) showed positive results at an average seven-year follow-up.

Conclusions:

• Lateral tibial hemiepiphyseodesis alone may not be sufficient for optimal correction of adolescent tibia vara in obese patients.
• Secondary surgical interventions can improve mechanical alignment in cases with suboptimal initial results.
• Proximal tibial osteotomy appears to be an effective treatment option for adolescent tibia vara, including in cases with residual deformity.