THE EFFECTS OF IMMOBILIZATION OF LONG SEGMENTS OF THE SPINE ON THE ADJACENT AND DISTAL FACET FORCE AND LUMBOSACRAL MOTION
THE EFFECTS OF IMMOBILIZATION OF LONG SEGMENTS OF THE SPINE ON THE ADJACENT AND DISTAL FACET FORCE AND LUMBOSACRAL MOTION
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DOI：
10.1097/00007632-199312000-00017
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发表时间：
1993-12-01
期刊：
影响因子：
3
通讯作者：
LEWIS, JL
中科院分区：
文献类型：
--
作者：
NAGATA, H;SCHENDEL, MJ;LEWIS, JL
长水平的脊柱内固定和融合在脊柱畸形手术中很常见。对其余移动细分市场的影响尚不清楚。随着固定水平数量的增加，评估腰椎小关节负载和腰骶运动的变化。使用从 T6 到骶骨的四个新鲜犬尸体脊柱。使用仪器化空间联动装置测量腰骶部运动，并使用应变仪技术测量 L1、L4 和 L7 处的小关节负载。近端节段固定后，腰骶运动和关节面负荷显着增加（P < 0.05），增加量取决于固定节段的数量（P < 0.05）。这表明脊柱长节段的固定会通过增加紧邻节段和远端节段的负载和运动来影响剩余的活动节段。
Long levels of spinal instrumentation and fusion are common in surgery for spinal deformity. The effect on the remaining mobile segments is not well understood. The changes in lumbar facet loading and lumbosacral motion were evaluated as the number of immobilized levels increased. Four fresh canine cadaveric spines from T6 to sacrum were used. Lumbosacral motion was measured with an instrumented spatial linkage device, and facet loads were measured at L1, L4, and L7 using a strain gauge technique. Lumbosacral motion and facet loading were significantly increased (P < 0.05) after immobilization of proximal segments, and the amount of the increase was dependent on the number of immobilized segments (P < 0.05). This indicates that immobilization of long segments of the spine influences the remaining mobile segments by increasing the load and motion not only at the immediately adjacent segment but also at the distal segments.