對(duì)于腰椎滑脫,,我們常規(guī)先上緊尾端的尾帽做懸掛來(lái)提拉復(fù)位,而對(duì)于無(wú)需提拉復(fù)位者,,尾帽的順序是否有考究,? 隨著脊柱退變,腰椎的前凸會(huì)重建丟失,,特別是L4/5 L5/S1的總和,。 隨著年齡增大,退變丟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無(wú)關(guān),而上腰段的前凸和PI正相關(guān),,但是隨年齡改變不大,。 改良TLIF的手術(shù)原則包括減壓、固定,、融合,、重建。常規(guī)做L4/5 L5/S1的改良TLIF想要重建到35度是遠(yuǎn)遠(yuǎn)達(dá)不到的,,但是前凸重建嚴(yán)重不夠時(shí)會(huì)導(dǎo)致鄰椎病的發(fā)生率增高,。腰椎前凸重建的要點(diǎn)包括:融合器的深度、融合器的長(zhǎng)度,、融合器的高度,、體位的擺放、關(guān)節(jié)突的松解,、彎棒的弧度,、單平面釘還是萬(wàn)向釘、上尾帽的順序,、后方是否加壓
融合器的深度、高度,、長(zhǎng)度,、角度都有影響。尾帽順序分為從頭側(cè)到尾側(cè),,從尾側(cè)到頭側(cè),。阻礙前凸的后方結(jié)構(gòu)主要是關(guān)節(jié)突關(guān)節(jié)和棘突間。從頭側(cè)向尾側(cè)上尾帽更利于前凸重建,取決于融合器支點(diǎn)為中心的弧和棒子的吻合程度,。1. Pesenti S, Lafage R, Stein D, Elysee JC, Lenke LG, Schwab FJ, Kim HJ, Lafage V. The Amount of Proximal Lumbar Lordosis Is Related to Pelvic Incidence. Clin Orthop Relat Res 2018, 476(8): 1603-1611. 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.
常規(guī)的手術(shù)要爭(zhēng)取做得極致, 困難的手術(shù)要爭(zhēng)取做得安全,。
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