儿童脊柱椎弓根测量及其意义

目的 测量儿童脊柱椎弓根解剖学数据,为儿童脊柱侧凸内固定器械的研发提供解剖学数据.方法 12例儿童脊柱标本进行CT扫描后分离成单个椎骨,测量各节段椎体椎弓根横径、高度、椎弓根与水平面、矢状面的夹角及椎弓根长度,并采用单因素方差分析和SNK方法对颈椎、胸椎及腰椎的上述数据进行统计学分析.结果 颈椎、胸椎及腰椎的椎弓根的椎弓根横径、高度、水平面夹角、矢状面夹角及椎弓根长度均存在显著性差异(P＜0.05),与文献中报道的成人脊柱椎弓根形态存在很大的差异.结论 此研究可为儿童新型脊柱侧内固定器械的定型提供基本的解剖学数据.

Measurement of the vertebral pedicle in children

Objective To obtain the spinal anatomic data of children for the development of implants used for scoliosis correction in children.Methods Twelve children cadaver spines(C3-L5)were separated into single vertebrae after CT scanning of the specimens.The transverse and sagittal pedicle length,transverse and sagittal pedicle angle,pedicle length versus spinal level were measured with either electronic vernier caliper or on reconstructed 3D model of the spine.Results The transverse pedicle length,sagittal pedicle length,transverse pedicle angle,sagittal pedicle angle and pedicle length were significantly different among cervical,thoracic and lumbar groups,and these data suggest significant differences of children's pedicle from the documented adult spine data.Conclusion The measurement can provide basic anatomic data for the development of the implant for scoliosis correction in children.