Maigne J Y, Ayral X, Guérin-Surville H
Laboratoire d'Anatomie, Université Paris V, France.
Surg Radiol Anat. 1992;14(2):119-24. doi: 10.1007/BF01794886.
Ossifications in the caudal attachments of the ligamentum flavum were studied on 121 dried thoracic spines. Most of them were aged. Frequency increased in a caudal direction. At T12, frequency depended on the orientation of the zygapophyseal joints of T11-12 which determined the range of rotation. When they were of thoracic orientation, allowing large range of rotation, ossifications were present in 83% of cases. If orientation was lumbar, allowing poor range of rotation, ossifications became much less frequent:33%. The size of ossifications was also studied. The smaller were in T1 and T2. In T11 and T12, size also depended on the orientation of the zygapophyseal joints of T11-12. If it allowed important range of rotation, ossifications were large sized. In the opposite case, they were small sized. Ossifications of caudal attachments of ligamentum flavum appear to be a normal feature of the aged lower thoracic spine. Their frequency in a given motion segment seems to be influenced by rotational strains.
对121具干燥的胸椎棘突进行了黄韧带尾侧附着处骨化的研究。其中大多数为老年人。骨化频率沿尾侧方向增加。在T12水平，骨化频率取决于T11 - 12椎间关节的方向，该方向决定了旋转范围。当椎间关节呈胸椎方向，允许较大旋转范围时，83%的病例存在骨化。如果方向为腰椎，旋转范围较小，则骨化频率明显降低：33%。还对骨化的大小进行了研究。T1和T2处的骨化较小。在T11和T12，骨化大小也取决于T11 - 12椎间关节的方向。如果允许较大旋转范围，骨化则较大。反之，则较小。黄韧带尾侧附着处的骨化似乎是老年下胸椎的一个正常特征。在给定运动节段中其频率似乎受旋转应变的影响。
