Influence of Intervertebral Fixation and Segmental Thrust Level on Immediate Post-Spinal Manipulation Trunk Muscle Spindle Response in an Animal Model.
Influence of Intervertebral Fixation and Segmental Thrust Level on Immediate Post-Spinal Manipulation Trunk Muscle Spindle Response in an Animal Model.
复制标题
椎间盘固定和节段推力水平对动物模型中立即进行脊柱后螺旋肌轴反应的影响。
DOI：
10.3390/brainsci11081022
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发表时间：
2021-07-31
期刊：
影响因子：
3.3
通讯作者：
Reed WR
中科院分区：
文献类型：
--
作者：
Lima CR;Martins DF;Avatapally S;Cho M;Li P;Reed WR
目的：研究单侧(单节段和双节段)腰椎小关节/关节突关节固定对不同推力持续时间的L4或L6高速低幅度脊柱推拿术后即刻椎旁肌梭活动的影响。方法：对麻醉成年猫(n=39，2.3~6.0 kg)采用单侧(L5/6)或两水平(L5/6和L6/7)关节突关节固定后即刻(≤2 S)躯干肌梭反应进行二次分析。所有小关节固定均为L6背根记录的对侧。用反馈电机将HVLA-SM从后向前传递到棘突，峰值推力幅度为猫平均体重的55%，推力持续时间为75、100、150和250ms。比较关节突关节固定条件和节段性推力水平对S术后1、2个月的第一次动作电位和肌梭活动度的影响。结果：在测试的推力持续时间内，两个节段关节突关节固定和节段水平都没有显著改变HVLA-SM后即刻的梭形放电(FDR>；0.05)。结论：在任何推力持续时间内，与单节段固定相比，两节段小关节固定均不能改变HVLA-SM后即刻(≤2 S)的梭形放电。节段性推力水平不改变两个节段关节突关节固定准备的HVLA-SM后即刻的纺锤反应。
Objective: To characterize the effect of unilateral (single and two-level) lumbar facet/zygapophysial joint fixation on paraspinal muscle spindle activity immediately following L4 or L6 high velocity low amplitude spinal manipulation (HVLA-SM) delivered at various thrust durations. Methods: Secondary analysis of immediate (≤2 s) post-HVLA-SM trunk muscle spindle response from two studies involving anesthetized adult cats (n = 39; 2.3–6.0 kg) with either a unilateral single (L5/6) or two-level (L5/6 and L6/7) facet joint fixation. All facet fixations were contralateral to L6 dorsal root recordings. HVLA-SM was delivered to the spinous process in a posterior-to-anterior direction using a feedback motor with a peak thrust magnitude of 55% of average cat body weight and thrust durations of 75, 100, 150, and 250 ms. Time to 1st action potential and spindle activity during 1 and 2 s post-HVLA-SM comparisons were made between facet joint fixation conditions and HVLA-SM segmental thrust levels. Results: Neither two-level facet joint fixation, nor HVLA-SM segmental level significantly altered immediate post-HVLA-SM spindle discharge at tested thrust durations (FDR > 0.05). Conclusions: Two-level facet joint fixation failed to alter immediate (≤2 s) post-HVLA-SM spindle discharge when compared to single-level facet joint fixation at any thrust duration. Segmental thrust level did not alter immediate post-HVLA-SM spindle response in two-level facet joint fixation preparations.
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影响因子：
3
作者：
Haas, M;Groupp, E;Aickin, M
通讯作者：
Aickin, M
影响因子：
2.9
作者：
JOHANSSON, H;DJUPSJOBACKA, M;SJOLANDER, P
通讯作者：
SJOLANDER, P
影响因子：
2.8
作者：
Breen, Alexander;Mellor, Fiona;Breen, Alan
通讯作者：
Breen, Alan
影响因子：
7.4
作者：
Thunberg, J;Hellström, F;Johansson, H
通讯作者：
Johansson, H
影响因子：
7.4
作者：
MacDonald, David;Moseley, G. Lorimer;Hodges, Paul W.
通讯作者：
Hodges, Paul W.