Unilateral Biportal Endoscopic Resection of Thoracic Hemivertebra in a Child: A Case Report Highlighting Technical Feasibility and the Critical Importance of Stabilization.

Unilateral biportal endoscopy (UBE) is technically feasible for complete thoracic hemivertebra resection in young children. However, combining it with unilateral short-segment percutaneous fixation proved biomechanically insufficient, leading to instrumentation failure and deformity progression. Mechanical stability, potentially requiring bilateral fixation, remains paramount in pediatric deformity correction, even when pursuing minimal invasiveness.