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- W1978649816 abstract "In Brief Study Design. A biomechanical study. Objective. To evaluate the biomechanical properties of a novel dynamic interspinous device named Locke Summary of Background Data. There has been no biomechanical study on this device. Methods. Five human cadaveric lumbar spine specimens (L2–S1) were tested in the following sequence: (1) intact state; (2) after removal of the interspinous ligaments of L3–L4; (3) after application of the Locker at the interspinous space; (4) after destabilization of the L3–L4 motion segments; and (5) after reapplication of the Locker to the destabilized segments. Range of motion (ROM) and intradiscal pressure were measured by a video-based motion capture system and needle transducers. Results. Applied to the intact spine, the Locker significantly reduced the ROM of the segment in extension and flexion without significant effect on lateral bending and/or axial rotation. When applied to the destabilized segment, it significantly reduced the ROM in all directions of movement except in axial rotation, where it failed to restore the ROM of the segment. The ROM of adjacent segments was not significantly affected by the application of the Locker. Pressures at the posterior anulus and central nucleus were decreased by application of the Locker. Conclusion. The Locker showed a significant stabilizing effect on the spinal motion segment both in the intact and destabilized spine without any significant effect on adjacent segments. It also decreased the pressures of the posterior anulus and central nucleus significantly. However, in the destabilized spine, it showed no stabilizing effect in axial rotation. This biomechanical property should be considered in clinical application. A biomechanical study of a novel interspinous device named Locker was performed using cadaveric spines. The device showed significant stabilizing effect in the intact and destabilized spine without any significant effect on adjacent segment. However, it showed no stabilizing effect in axial rotation." @default.
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- W1978649816 date "2008-10-01" @default.
- W1978649816 modified "2023-10-02" @default.
- W1978649816 title "Biomechanical Evaluation of an Interspinous Stabilizing Device, Locker" @default.
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- W1978649816 doi "https://doi.org/10.1097/brs.0b013e3181894fb1" @default.
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