Dick Justin M
Orthopedics, Clear Life Scoliosis Reduction and Chiropractic, Charlotte, USA.
Cureus. 2025 Aug 27;17(8):e91098. doi: 10.7759/cureus.91098. eCollection 2025 Aug.
Adolescent Idiopathic Scoliosis (AIS) is a complex spinal deformity that affects millions around the globe. Prevailing theories limit the scope of the spinal deformity to only the scoliotic affected area. Objective: The aim of this study is to investigate the biomechanical relationship between cervical mechanics and AIS. Research is warranted to evaluate the specific mechanical correlations and potential contributory role of altered dynamic cervical alignment in the development or progression of scoliotic deformities. Methods: This study was designed as a cross-sectional, descriptive, and retrospective analysis. This study included 37 participants for analysis. Cervical Lateral (Neutral, Flexion, Extension), AP scoliosis radiographs with computer-aided quantitative measurements were recorded for cervical lordosis, cervical segmental instability, and scoliosis Cobb angles. Anterior head translation (AHT) was measured from C2 to C7. Global cervical shape was compared to known buckling patterning. Quantification of the scoliosis utilized the Cobb scoliosis method of measurement.
This study's data strongly support the hypothesis that all AIS patients exhibit a loss of cervical lordosis, with cervical instability contributing to abnormal biomechanics associated with cervical buckling. A high percentage of the participants measured abnormal segmental translation, highest at 70.3% C3-C4 (p=0.0011). A lower proportion of patients (21.6%, p=0.9999) met the threshold for segmental angulation. The majority of patients (33 out of 37; 89.2%) exhibited Order 1 buckling. Four patients (10.8%) demonstrated Order 2 buckling.
This case series demonstrates a correlation between AIS participants, cervical instability, cervical hypolordosis, and cervical buckling. This study adds to the literature by reviewing the abnormal cervical mechanics in AIS patients.
青少年特发性脊柱侧凸（AIS）是一种复杂的脊柱畸形，影响着全球数百万人。现有理论将脊柱畸形的范围仅局限于脊柱侧凸受累区域。目的：本研究旨在探讨颈椎力学与AIS之间的生物力学关系。有必要进行研究以评估动态颈椎排列改变在脊柱侧凸畸形发展或进展中的具体力学相关性及潜在促成作用。方法：本研究设计为横断面、描述性回顾性分析。本研究纳入37名参与者进行分析。记录颈椎侧位（中立位、前屈、后伸）、前后位脊柱侧凸X线片，并采用计算机辅助定量测量颈椎前凸、颈椎节段性不稳定和脊柱侧凸Cobb角。测量C2至C7的前头部移位（AHT）。将整体颈椎形态与已知的屈曲模式进行比较。脊柱侧凸的量化采用Cobb脊柱侧凸测量方法。
本研究数据有力支持了以下假设：所有AIS患者均存在颈椎前凸丢失，颈椎不稳定导致与颈椎屈曲相关的异常生物力学。高比例参与者测量到节段性移位异常，C3 - C4节段最高，为70.3%（p = 0.0011）。达到节段性成角阈值的患者比例较低（21.6%，p = 0.9999）。大多数患者（37名中的33名；89.2%）表现为1级屈曲。4名患者（10.8%）表现为2级屈曲。
本病例系列证明了AIS参与者、颈椎不稳定、颈椎前凸减少和颈椎屈曲之间的相关性。本研究通过回顾AIS患者的异常颈椎力学为文献增添了内容。
