PDF(Pubmed)
Abstract：
BACKGROUND: Physiological motion of the lumbar spine is a topic of interest for musculoskeletal health care professionals since abnormal motion is believed to be related to lumbar complaints. Many researchers have described ranges of motion for the lumbar spine, but only few have mentioned specific motion patterns of each individual segment during flexion and extension, mostly comprising the sequence of segmental initiation in sagittal rotation. However, an adequate definition of physiological motion is still lacking. For the lower cervical spine, a consistent pattern of segmental contributions in a flexion-extension movement in young healthy individuals was described, resulting in a definition of physiological motion of the cervical spine.
OBJECTIVE: This study aimed to define the lumbar spines\' physiological motion pattern by determining the sequence of segmental contribution in sagittal rotation of each vertebra during maximum flexion and extension in healthy male participants.
METHODS: Cinematographic recordings were performed twice in 11 healthy male participants, aged 18-25 years, without a history of spine problems, with a 2-week interval (time point T1 and T2). Image recognition software was used to identify specific patterns in the sequence of segmental contributions per individual by plotting segmental rotation of each individual segment against the cumulative rotation of segments L1 to S1. Intraindividual variability was determined by testing T1 against T2. Intraclass correlation coefficients were tested by reevaluation of 30 intervertebral sequences by a second researcher.
RESULTS: No consistent pattern was found when studying the graphs of the cinematographic recordings during flexion. A much more consistent pattern was found during extension, especially in the last phase. It consisted of a peak in rotation in L3L4, followed by a peak in L2L3, and finally, in L1L2. This pattern was present in 71% (15/21) of all recordings; 64% (7/11) of the participants had a consistent pattern at both time points. Sequence of segmental contribution was less consistent in the lumbar spine than the cervical spine, possibly caused by differences in facet orientation, intervertebral discs, overprojection of the pelvis, and muscle recruitment.
CONCLUSIONS: In 64% (7/11) of the recordings, a consistent motion pattern was found in the upper lumbar spine during the last phase of extension in asymptomatic young male participants. Physiological motion of the lumbar spine is a broad concept, influenced by multiple factors, which cannot be captured in a firm definition yet.
BACKGROUND: ClinicalTrials.gov NCT03737227; https://clinicaltrials.gov/ct2/show/NCT03737227.
UNASSIGNED: RR2-10.2196/14741.
OBJECTIVE: This study aimed to define the lumbar spines\' physiological motion pattern by determining the sequence of segmental contribution in sagittal rotation of each vertebra during maximum flexion and extension in healthy male participants.
METHODS: Cinematographic recordings were performed twice in 11 healthy male participants, aged 18-25 years, without a history of spine problems, with a 2-week interval (time point T1 and T2). Image recognition software was used to identify specific patterns in the sequence of segmental contributions per individual by plotting segmental rotation of each individual segment against the cumulative rotation of segments L1 to S1. Intraindividual variability was determined by testing T1 against T2. Intraclass correlation coefficients were tested by reevaluation of 30 intervertebral sequences by a second researcher.
RESULTS: No consistent pattern was found when studying the graphs of the cinematographic recordings during flexion. A much more consistent pattern was found during extension, especially in the last phase. It consisted of a peak in rotation in L3L4, followed by a peak in L2L3, and finally, in L1L2. This pattern was present in 71% (15/21) of all recordings; 64% (7/11) of the participants had a consistent pattern at both time points. Sequence of segmental contribution was less consistent in the lumbar spine than the cervical spine, possibly caused by differences in facet orientation, intervertebral discs, overprojection of the pelvis, and muscle recruitment.
CONCLUSIONS: In 64% (7/11) of the recordings, a consistent motion pattern was found in the upper lumbar spine during the last phase of extension in asymptomatic young male participants. Physiological motion of the lumbar spine is a broad concept, influenced by multiple factors, which cannot be captured in a firm definition yet.
BACKGROUND: ClinicalTrials.gov NCT03737227; https://clinicaltrials.gov/ct2/show/NCT03737227.
UNASSIGNED: RR2-10.2196/14741.
摘要：
背景：腰椎的生理运动是肌肉骨骼保健专业人员感兴趣的话题，因为异常运动被认为与腰椎不适有关。许多研究人员已经描述了腰椎的运动范围，但是只有少数人提到了屈伸过程中每个节段的特定运动模式，主要包括矢状旋转中的节段起始序列。然而,仍然缺乏对生理运动的适当定义。对于下颈椎，描述了年轻健康个体在屈伸运动中分段贡献的一致模式，从而定义了颈椎的生理运动。
目的：本研究旨在通过确定健康男性参与者在最大屈伸期间每个椎骨矢状旋转的节段贡献序列来定义腰椎生理运动模式。
方法：对11名健康男性参与者进行了两次摄影记录，18-25岁,没有脊柱问题的历史，与2周的间隔（时间点T1和T2）。使用图像识别软件通过绘制每个个体片段的片段旋转与片段L1至S1的累积旋转的关系来识别每个个体的片段贡献序列中的特定模式。通过测试T1与T2确定个体间变异性。第二位研究人员通过重新评估30个椎间序列来测试组内相关系数。
结果：在研究屈曲期间的摄影记录图时，未发现一致的模式。在扩展过程中发现了一个更一致的模式，尤其是在最后阶段。它包括L3L4中的旋转峰值，然后是L2L3中的峰值，最后，在L1L2。该模式存在于所有记录的71%(15/21)中;64%(7/11)的参与者在两个时间点具有一致的模式。腰椎的节段贡献顺序不如颈椎一致，可能是由于刻面方向的差异造成的，椎间盘,骨盆的过度突出，和肌肉招募。
结论：在64%(7/11)的录音中，在无症状的年轻男性参与者中,在上腰椎伸展的最后阶段发现了一致的运动模式.腰椎生理运动是一个广义的概念,受多种因素影响，这还不能在一个坚定的定义中捕捉到。
背景：ClinicalTrials.govNCT037227;https://clinicaltrials.gov/ct2/show/NCT037227。
■RR2-10.2196/14741。
目的：本研究旨在通过确定健康男性参与者在最大屈伸期间每个椎骨矢状旋转的节段贡献序列来定义腰椎生理运动模式。
方法：对11名健康男性参与者进行了两次摄影记录，18-25岁,没有脊柱问题的历史，与2周的间隔（时间点T1和T2）。使用图像识别软件通过绘制每个个体片段的片段旋转与片段L1至S1的累积旋转的关系来识别每个个体的片段贡献序列中的特定模式。通过测试T1与T2确定个体间变异性。第二位研究人员通过重新评估30个椎间序列来测试组内相关系数。
结果：在研究屈曲期间的摄影记录图时，未发现一致的模式。在扩展过程中发现了一个更一致的模式，尤其是在最后阶段。它包括L3L4中的旋转峰值，然后是L2L3中的峰值，最后，在L1L2。该模式存在于所有记录的71%(15/21)中;64%(7/11)的参与者在两个时间点具有一致的模式。腰椎的节段贡献顺序不如颈椎一致，可能是由于刻面方向的差异造成的，椎间盘,骨盆的过度突出，和肌肉招募。
结论：在64%(7/11)的录音中，在无症状的年轻男性参与者中,在上腰椎伸展的最后阶段发现了一致的运动模式.腰椎生理运动是一个广义的概念,受多种因素影响，这还不能在一个坚定的定义中捕捉到。
背景：ClinicalTrials.govNCT037227;https://clinicaltrials.gov/ct2/show/NCT037227。
■RR2-10.2196/14741。
