OBJECTIVE: To construct a lumber spine (L3-5) biomechanical model using three-dimensional finite element method.
目的：应用三维有限元法建立L3~5腰椎活动节段力学模型。
This is a stretch for the deep psoas muscle that when tight compresses the lumber spine, tilts the pelvis and can contribute to sciatica and lumber pain.
这是对肌肉紧绷压迫脊柱问题的深层腰肌伸展运动，侧倾骨盆对坐骨神经痛和脊柱疼痛有利。
Good posture is essential for teenagers to avoid osseous changes in the spine and the onset of disorders in the lumber region later in life.
保持姿势正确对青少年绝对必要，这有助于预防脊柱变形，防止在以后的生活中发生腰区病痛。
Objective:To establish the animal model of spine cord shortening by the 4th lumber body vertebrectomy, and study the acute effects of spine shortening on the spinal function and blood flow.
目的：建立家兔第四腰椎体后路截骨脊柱短缩模型，观察不同脊柱短缩长度对脊髓功能及血流的早期影响，为临床应用截骨矫形手术提供一定的依据。
Objective:To establish the animal model of spine cord shortening by the 4th lumber body vertebrectomy, and study the acute effects of spine shortening on the spinal function and blood flow.
目的：建立家兔第四腰椎体后路截骨脊柱短缩模型，观察不同脊柱短缩长度对脊髓功能及血流的早期影响，为临床应用截骨矫形手术提供一定的依据。
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