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目的:观测椎板下棘的形态特点,探讨其在显微内窥镜腰椎间盘切除术(MED)中的临床意义。方法:对42具成人干燥椎骨和10件脊柱腰骶段标本的椎板下棘进行观测,分析其对椎间管构成的影响;结合MED术式的通道和操作过程,分析其可能导致的并发症。结果:椎板下棘位于椎板下缘前外近椎弓根下切迹处。可出现于所有胸腰椎,出现率为83.3%;出现率最高在第12胸椎,为52.4%。椎板下棘分布不规则,出现在胸腰段较多。结论:椎板下棘是胸腰椎的骨性结构,有必要给予命名;椎板下棘参与构成神经根管的骨性后壁,可造成神经根受压;后路MED可引起椎板下棘断脱,造成神经根受压或损伤。
Objective: To observe the morphological characteristics of inferior lamina spinous process, and discuss its clinical significance in microendoscopic discectomy (MED). Methods: The specimens of 42 adult desiccated vertebrae and 10 cases of lumbosacral segments of the spine were observed under the lamina propria, and their effects on the intervertebral canal composition were analyzed. Combined with the channels and procedures of MED, the possible causes of the complications were analyzed disease. Results: The inferior laminaria is located in the anterior and posterior pedicle of the inferior lamina peduncles. Can occur in all thoracolumbar spine, the incidence was 83.3%; the highest incidence in the twelfth thoracic spine, was 52.4%. Spinal subepithelial distribution of irregular, appear in the thoracolumbar more. Conclusions: The inferior lamina is the bony structure of the thoracolumbar vertebra, and it is necessary to give the name. The inferior lamina of the lamina are involved in the posterior bony wall of the nerve root canal, which can cause nerve root compression. Off, resulting in nerve root compression or injury.