CT-Based Geometric Data of Human Spine Musculature. Part I. Japanese Patients with Chronic Low Back Pain

Han, Jung‐Soo; Ahn, Joshua; Goel, V K; Takeuchi, Renichi; McGowan, Dennis

doi:10.1097/00002517-199212000-00010

Cited by 29 publications

(26 citation statements)

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“…In comparison with previously published data for the abdominal muscles, we found each side of rectus abdominis to have PCSA of 567 mm , compared to area values in the range 360-850 mm from Takashima et al (1979); Reid and Costigan (1985), Han et al (1992) and McGill (1996). For external oblique we obtained 1575 mm as the total of the six-component muscle vectors, compared to 960 mm for the sum of three parts in Takashima et al (1979) and 1600 mm from McGill (1996), who summed two parts.…”

Section: Discussionsupporting

confidence: 54%

“…Serial CT sectional data published by Han et al (1992) give the total cross-sectional area of these muscles at each anatomical level (averaged for 10 subjects 24-70 yr-old, 44.9-72 kg, 1.44-1.74 m tall). The level-by-level differences of this area were considered to be the PCSA of the fascicle arising at each level.…”

Section: Quadratus Lumborum and Psoasmentioning

confidence: 99%

“…This approach ignores the actions of individual fascicles of the muscle groups, and also considers the action of each muscle only at the analyzed cross section, and not at other anatomical levels which it crosses. Furthermore, there is a wide reported range of directions for the muscle lines of action in the trunk (Han et al, 1992;Hughes et al, 1995;McGill, 1992McGill, , 1996 to which the calculated spinal and muscle forces are sensitive (Nussbaum et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

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Quantitative anatomy of the lumbar musculature

Stokes

Gardner‐Morse

1999

Journal of Biomechanics

142

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This paper describes the anatomy of the musculature crossing the lumbar spine in a standardized form to provide data generally suitable for static biomechanical analyses of muscle and spinal forces. The muscular anatomy from several sources was quantified and transformed to the mean bony anatomy of four young healthy adults measured from standing stereo-radiographs. The origins, insertions and physiological cross-sectional area (PCSA) of 180 muscle slips which act on the lumbar spine are given relative to the bony anatomy defined by the locations of 12 thoracic and five lumbar vertebrae, and the sacrum, and the shape and positions of the 24 ribs. The broad oblique abdominal muscles are each represented by six vectors and an appropriate proportion of the total PCSA was assigned to each to represent the muscle biomechanics.

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Section: Discussionsupporting

confidence: 54%

Section: Quadratus Lumborum and Psoasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantitative anatomy of the lumbar musculature

Stokes

Gardner‐Morse

1999

Journal of Biomechanics

142

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“…1). Some authors have asserted that the CSA of the paraspinal and psoas muscles are at or near maximal at the upper end-plate of L4 [3,9,21], others have found that the total CSA of the back muscles was maximal at about the L3 [11,15] or the L4-L5 level [16,24,25,30]. In this study, in order to screen the most suitable level and to detect a possible systematic difference between the different levels, three levels were analysed.…”

Section: Computerized Tomographymentioning

confidence: 99%

“…Since each plane of cut was through one of the vertebral end-plates, any angulation of the vertebra would mean that this section would not be perpendicular to the muscle bundles. An extreme angulation could influence the CSA, which would make a correction necessary [11]. Therefore, in each subject the lumbar lordosis was estimated on the scouth view ( Fig.…”

Section: Fibre Orientationmentioning

confidence: 99%

CT imaging of trunk muscles in chronic low back pain patients and healthy control subjects

Danneels

Vanderstraeten

Cambier

et al. 2000

European Spine Journal

572

490

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Loads in the spinal structures during lifting: development of a three-dimensional comprehensive biomechanical model

et al. 1995

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Epidemiological studies have shown that loads imposed on the human spine during daily living play a significant role in the onset of low back pain. The loads applied to the lumbar spine are shared by a number of structures: muscles; posterior elements, including facets and ligaments; and the disc of a ligamentous motion segment. In vivo, it is not practical to determine forces in these structures using experimental techniques. Biomechanical models, based on an optimization technique of electromyographic activities of the trunk muscles, have been proposed to predict forces in the load transmitting structures. The mathematical models reported in the literature are based on information collected from a wide variety of sources, of which the subject that takes part in the experiment is only one. The present study describes techniques developed in our laboratory to collect from the subjects themselves all the data needed for the formulation of a biomechanical model. The results demonstrated that back lifting with 0 N (no load), 90 N, and 180 N in the hands created maximum external flexion moments respectively of 109.6 Nm, 137.9 Nm, and 161.7 Nm, at the L3-4 disc level. The corresponding external axial compression forces on the disc were 469.5 N, 511.8 N, and 601.5 N. The predicted disc compression varied from 3.4 to 5.0 times the body weight. In comparison to the static lifting mode, the dynamic lifting task caused an increase in the disc compression force ranging from 15.8% to 39.4% depending on the load being lifted (e.g., 3256 N for the dynamic mode vs. 2516 N for the static mode when the subject lifted 90 N). The salient features of the entire protocol developed by the authors and the need for further improvements are also presented.

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CT-Based Geometric Data of Human Spine Musculature. Part I. Japanese Patients with Chronic Low Back Pain

Cited by 29 publications

References 0 publications

Quantitative anatomy of the lumbar musculature

Quantitative anatomy of the lumbar musculature

CT imaging of trunk muscles in chronic low back pain patients and healthy control subjects

Loads in the spinal structures during lifting: development of a three-dimensional comprehensive biomechanical model

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