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目的:探讨胸椎黄韧带骨化症的影像学表现特征及其病因学意义。方法:回顾分析手术治疗胸推黄韧带骨化症35例（男21例，女14例），平均年龄51岁，发病部均位于椎间盘水平，T10～L1间的3个节段32例。结果:X线侧位片病变部位均见椎间孔处骨化影，椎体骨桥2例;病变部位以外的胸推、腰推或胸腰椎见广泛退行性变，形成骨桥17例。造影特征性表现主要是正位V形、U形、稀疏样改变，侧位主要为孤形压迹、V形改变。CT扫描骨化形态由轻而重分为4型:棘状型2例、给节型9例、板块型5例、隆突型14例。CT另有椎体后缘软骨结书16例，椎间盘疝4例，OPLL3例，前纵韧带骨化20例。结论:从胸推黄韧带骨化症影像学的特殊表现可以推断其发病与脊柱继发退变有关，是从关节突内缘起始、沿黄韧带腹面生长的。
Objective: To investigate the imaging features and etiological significance of thoracic ligamentum flavum ossification. Methods: Retrospective analysis of surgical treatment of thoracic ligamentum flavum ossification in 35 cases (21 males and 14 females), mean age 51 years old, the incidence of Department are located in the intervertebral disc level, T10 ~ L1 between the three segments in 32 cases. Results: The X-ray films showed foraminotomy at the foramen of the foramen. There were 2 cases of vertebral bone bridge. Thoracolumbar, lumbar or thoracolumbar vertebrae outside the lesion were extensive degenerative changes, forming 17 cases of bone bridge. The characteristic features of contrast were mainly positive V-shaped, U-shaped, sparse-like changes, the lateral position was mainly a solitary-shaped depressions, V-shaped changes. The ossification morphology of CT scan was divided into 4 types by lightness: 2 in spine type, 9 in type, 5 in type and 14 in type. CT and another vertebral tracts edge of cartilage knot book in 16 cases, 4 cases of intervertebral hernia, OPLL in 3 cases, 20 cases of anterior longitudinal ligament ossification. CONCLUSION: The special manifestation of ossification of ossification of the ligamentum flavum can infer that its incidence is related to the secondary degeneration of the spine. It starts from the inner edge of the articular process and grows along the ventral surface of the ligamentum flavum.