Treatment of Adolescent Tibia Vara with Guided Growth Using 8-Plate | ||
| Zagazig University Medical Journal | ||
| Articles in Press, Accepted Manuscript, Available Online from 13 September 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/zumj.2025.413595.4105 | ||
| Authors | ||
| Bassam Mohamed Ouda1; Riad Mansour Megahed1; Abdelrahman Ismael Mohamed Newaira* 2; Ahmed Mohamed Abdelwahab3 | ||
| 1Professor of Orthopedic Surgery Department, Faculty of Medicine, Zagazig University, Egypt | ||
| 2Department of Orthopedic Surgery, Faculty of Medicine, Zagazig University, Egypt | ||
| 3Assistant Professor of Orthopedic Surgery Department, Faculty of Medicine, Zagazig University, Egypt | ||
| Abstract | ||
| Background: Adolescent tibia vara, also known as adolescent Blounts disease, is a progressive deformity of the proximal tibia leading to genu varum. Surgical correction is often required in moderate to severe cases. Guided growth using a tension band plate (8-plate) has emerged as a less invasive alternative to osteotomy, with fewer complications and good outcomes in selected patients. This study aimed to evaluate the outcomes of treating adolescent tibia vara using guided growth with the 8-plate system. Methods: This prospective study included 24 patients (40 limbs) with adolescent tibia vara treated at Zagazig University Hospitals from August 2023 to March 2025. The radiological evaluation included lateral distal femoral angle (mLDFA), medial proximal tibial angle (MPTA), joint line convergence angle (JLCA), and mechanical axis deviation (MAD). The average duration of patient follow-up was one and a half years. Results: A significant improvement was observed in all clinical and radiological parameters. Intercondylar distance decreased by 52.89%, and MAD improved by 90.54% (right) and 89.12% (left). MPTA significantly increased, and JLCA and mLDFA decreased significantly. The average duration of plate application was 19.17 months. Full range of motion was preserved in all limbs. Complications occurred in 9 cases (37.5%), including undercorrection (7 limbs), screw breakage (3 limbs), and superficial wound infection (2 cases). Overall correction was achieved in 70.8% of the limbs. Conclusion: Guided growth using 8-plate is an effective for correcting adolescent tibia vara in properly selected patients. It allows for gradual correction while preserving joint motion and minimizing complications. | ||
| Keywords | ||
| Adolescent Tibia Vara; Blount Disease; Guided Growth; 8-Plate | ||
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