Soft Tissue Artefacts of the Human Back: Comparison of the Sagittal Curvature of the Spine Measured Using Skin Markers and an Open Upright MRI

Zemp, Roland; List, Renate; Gülay, Turgut; Elsig, J. P.; Naxera, J.; Taylor, William R.; Lorenzetti, Silvio

doi:10.1371/journal.pone.0095426

Cited by 84 publications

(72 citation statements)

References 46 publications

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“…Previous research showed that these angles differ by about 20° [67]. This limits the direct comparison of the lumbar angles reported in the current study with other studies; however, it does not affect the results of our regression analyses since all participants were measured identically.…”

Section: Limitationscontrasting

confidence: 52%

Fear avoidance beliefs limit lumbar spine flexion during object lifting in pain-free adults

Knechtle

Schmid

Suter

et al. 2020

Preprint

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There is a long-held belief that physical activities such as lifting with a flexed spine is generally harmful for the back and can cause low back pain (LBP), potentially nurturing fear avoidance beliefs underlying pain-related fear. In chronic LBP patients, pain-related fear has been shown to be associated with reduced lumbar range of motion during lifting, indicating distinct and probably protective psychomotor responses to pain. However, despite short term beneficial effects for tissue health, recent evidence suggests that maintaining a protective trunk movement strategy may also pose a risk for (persistent) LBP due to possible pro-nociceptive consequences of altered spinal kinematics, reflected by increased loading on lumbar tissues and persistent muscle tension. Yet, it is unknown if similar psychomotor interactions already exist in pain-free individuals which would yield potential insights into how a person might react when they experience LBP. Therefore, the aim of this study is to test the impact of pain-related fear on spinal kinematics in a healthy cohort of pain-free adults without a history of chronic pain. The study subjects (N=57) filled out several pain-related fear questionnaires and were asked to perform a lifting task (5kg-box). High-resolution spinal kinematics were assessed using an optical motion capturing system. Time-sensitive analyses were performed based on statistical parametric mapping. The results demonstrated time-specific and negative relationships between self-report measures of pain-related fear and lumbar spine flexion angles during lifting, yielding important implications regarding unfavorable psychomotor interactions that might become relevant in a future LBP incident.

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Section: Limitationscontrasting

confidence: 52%

Fear avoidance beliefs limit lumbar spine flexion during object lifting in pain-free adults

Knechtle

Schmid

Suter

et al. 2020

Preprint

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“…The accurate measurement of segment kinematics is challenging due to the complexity of the soft tissues moving relative to the underlying skeletal structures (Taylor et al 2005;Zemp et al 2014). As a result, motion capture varies from techniques using data extracted from simple videos, through retro-reflective markers attached to the subject's skin, to extensive measurement using e.g.…”

Section: Introductionmentioning

confidence: 99%

Robustness of kinematic weighting and scaling concepts for musculoskeletal simulation

Schellenberg

Taylor

Jonkers

et al. 2017

Computer Methods in Biomechanics and Biomedical Engineering

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Musculoskeletal modelling is widely used to estimate internal loading conditions. In order to optimise robustness and reduce errors between the subject-specific reference motion data (RMD) and the musculoskeletal simulation, 90 permutations of kinetic and kinematic data were analysed during split squats. A ranking for the scaling and kinematic weighting concepts based on the RMS errors when including functional centres of rotation (fCoRs), joint angles, and skin markers, revealed that analyses should include fCoR in the scaling and the simulation processes, as well as an automated weighting procedure including all attached skin markers for optimal registration of the musculoskeletal model to the RMD.

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“…The standing trial was used as a basis to compute the relative positions of the two segments. For the spine, a segmental [31] and curvature approach [31,35,36] was used, and the curvature angle [37] was calculated.…”

Section: Data Processing and Analysismentioning

confidence: 99%

Pulling Exercises for Strength Training and Rehabilitation: Movements and Loading Conditions

Lorenzetti

Dayer

Plüss

et al. 2017

JFMK

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Abstract:The back is an extremely common site of injury among both athletes and sedentary people. Furthermore, low back pain has become prevalent in our society. Maintaining strong back muscles can help prevent future pain or injuries. Here, the aim is therefore to assess the kinetic and kinematic movements of four pulling exercises with different external loading directions. Fifteen healthy subjects were analyzed using a 3D motion capture system. The pulley machine was equipped with a load cell for force data acquisition. The exercises consisted of 8 repetitions each of the lat pulldown (25% and 50% body weight (BW) extra load), the lat pulldown with 45 • incline (10% and 25% BW), the seated cable row (25% and 50% BW) and the upright row (standing, 10% and 25% BW). The minimum and maximum curvature angle in the thoracic as well as the lumbar spine was larger during the upright row than during the other exercises. Furthermore, during the upright row, the sagittal moment in the shoulder joint is opposed to the other exercises in the direction of retroversion. Due to the higher lumbar curvature observed in low back patients, to avoid overload, it is not advisable for patients with back pain to perform upright rows.

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Soft Tissue Artefacts of the Human Back: Comparison of the Sagittal Curvature of the Spine Measured Using Skin Markers and an Open Upright MRI

Cited by 84 publications

References 46 publications

Fear avoidance beliefs limit lumbar spine flexion during object lifting in pain-free adults

Fear avoidance beliefs limit lumbar spine flexion during object lifting in pain-free adults

Robustness of kinematic weighting and scaling concepts for musculoskeletal simulation

Pulling Exercises for Strength Training and Rehabilitation: Movements and Loading Conditions

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