1　颈椎侧块的形态及生物力学颈椎的侧块位于椎体的后外侧、椎弓根和椎弓的结合部 ,由分别向头侧突出的上关节突和向尾侧突出的下关节突组成 ,左右各一。相邻节段的上下关节突构成小关节 ,并将侧块连接在一起形成一个骨性柱状体。双侧的小关节和侧块同前方的椎体及椎间盘一起构 1 cervical lateral mass morphology and biomechanics Cervical lateral mass is located in the posterolateral vertebral body, the pedicle and the pedicle of the junction, respectively, from the head to the side of the superior articular process and caudal to the caudal protruding lower facet About one each. Adjacent segments of the upper and lower facet joints form small joints, and connect the side pieces together to form a bony columnar body. Bilateral joints and lateral mass with the front of the vertebral body and intervertebral disc together