Correction effect of Halo-Pelvic Traction for severe adolescent scoliosis:based on 3D-planar study

YAN Kai; XIA Qing-fu; WANG Yu; ZHANG Yu-shuang; ZHANG Yan-bin; XING Yong-gang; XIAO Bin

doi:10.3969/j.issn.2095-252X.2025.01.005

Abstract：Objective To explore the correction effect in coronal,sagittal and axial planes of Halo-Pelvic Traction for severe adolescent scoliosis. Methods A retrospective case-series of severe adolescent scoliosis patients treated with Halo-Pelvic Traction (HPT) before surgery in our hospital from September 2019 to September 2022 was performed. Based on radiographic analysis,the coronal,sagittal and axial parameters were compared before and after HPT. The parameters included Cobb angle of Proximal Thoracic (PT),Main Thoracic (MT),Thoracolumbar/Lumbar (TL/L),Apical Vertebral Translation (AVT),Thoracic Kyphosis (TK),Thoracolumbar Kyphosis (TLK),Lumbar Lordosis (LL) and Apical Vertebral Rotation (AVR). The complications were also recorded. Results A total of 32 cases (male 15,female 17) were included with an average age of (13.15±1.42) years,and an average traction time of (9.32±3.31) weeks. The coronal parameters and thoracic kyphosis were improved significantly (P<0.001). There was no significant difference in AVR of the main thoracic curve (AVR_sac P=0.156,AVR_AD P=0.705). The complications included 2 cases of unilateral abducens palsy and 3 cases of finger numbness,and all relived during the follow-up. Conclusions The correction effect of HPT in coronal and sagittal planes for severe adolescent scoliosis is satisfactory,but with no correction effect for AVR in the axial plane. If necessary,additional derotation maneuver should be performed in the surgery to achieve 3D deformity correction.