对于腰椎滑脱,我们常规先上紧尾端的尾帽做悬挂来提拉复位,而对于无需提拉复位者,尾帽的顺序是否有考究?
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腰椎前凸
随着脊柱退变,腰椎的前凸会重建丢失,特别是L4/5 L5/S1的总和。
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随着年龄增大,退变丢失的前凸主要集中在L4/5、L5/S1,其正常值在35度左右,其中L4/5在15度左右,L5/S1在20度左右,且和PI无关,而上腰段的前凸和PI正相关,但是随年龄改变不大。
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腰椎前凸重建的要点
腰椎前凸重建的要点包括:融合器的深度、融合器的长度、融合器的高度、体位的摆放、关节突的松解、弯棒的弧度、单平面钉还是万向钉、上尾帽的顺序、后方是否加压
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尾帽的顺序
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2. Menachem S, Seex K. A biomechanical study shows the direction of compression influences the amount of lordosis gained in lumbar fusion. Clin Biomech (Bristol, Avon) 2023, 101: 105862.
3. Janik TJ, Harrison DD, Cailliet R, Troyanovich SJ, Harrison DE. Can the sagittal lumbar curvature be closely approximated by an ellipse? Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society 1998, 16(6): 766-770.
4. Barrey C, Darnis A. Current strategies for the restoration of adequate lordosis during lumbar fusion. World Journal of Orthopedics 2015, 6(1): 117-126.
5. Amaral R, Daher MT, Pratali R, Arnoni D, Pokorny G, Rodrigues R, Batista M, Fortuna PP, Pimenta L, Herrero C, Brazilian Spine Study G. The Effect of Patient Position on Psoas Morphology and in Lumbar Lordosis. World Neurosurg 2021, 153: e131-e140.
常规的手术要争取做得极致,
困难的手术要争取做得安全。
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