Kinematic patterns in performing trunk flexion tasks influenced by various mechanical optimization targets: A simulation study

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL Clinical Biomechanics Pub Date : 2024-09-10 DOI:10.1016/j.clinbiomech.2024.106344

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Abstract

Background

Low back pain is the most prevalent and disabling condition worldwide, with a high recurrence rate in the general adult population.

Methods

A set of open-sourced trunk musculoskeletal models was used to investigate trunk flexion kinematics under different motor control strategies, including minimizing shearing or compressive loads at the L4/L5 or L5/S1 level.

Findings

A control strategy that minimizes the load on the lower lumbar intervertebral disc can result in two kinematic patterns—the “restricted lumbar spine” and the “overflexed lumbar spine”—in performing the trunk flexion task. The “restricted” pattern can reduce the overall load on the lower lumbar levels, whereas the “overflexed” pattern can reduce the shearing force only at the L4/L5 level and increase the compressive and shearing forces at the L5/S1 level and the compressive force at the L4/L5 level.

Interpretation

This study investigated the relationships between specific trunk kinematics in patients with low back pain and lumbar intervertebral loading via musculoskeletal modelling and simulation. The results provide insight into individualized treatment for patients with low back pain.

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执行躯干屈伸任务时受各种机械优化目标影响的运动模式：模拟研究

方法使用一套开源躯干肌肉骨骼模型研究不同运动控制策略下的躯干屈曲运动学，包括最小化 L4/L5 或 L5/S1 水平的剪切或压缩负荷。研究结果在执行躯干屈曲任务时，尽量减少下腰椎间盘负荷的控制策略会导致两种运动模式--"受限腰椎 "和 "过度屈曲腰椎"。受限 "模式可减轻腰椎下部的整体负荷，而 "过度屈曲 "模式仅可减少 L4/L5 水平的剪切力，并增加 L5/S1 水平的压缩力和剪切力以及 L4/L5 水平的压缩力。研究结果为腰背痛患者的个体化治疗提供了启示。

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来源期刊

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.