Biomechanics of changes in lumbar posture in static lifting.


STUDY DESIGN:In vivo measurements and model studies are combined to investigate the role of lumbar posture in static lifting tasks. OBJECTIVES:Identification of the role of changes in the lumbar posture on muscle forces, internal loads, and system stability in static lifting tasks with and without load in hands. SUMMARY OF BACKGROUND DATA:Despite the recognition of the causal role of lifting in spinal injuries, the advantages of preservation or flattening of the lumbar lordosis while performing lifting tasks is not yet clear. METHODS:Kinematics of the spine and surface EMG activity of selected muscles were measured in 15 healthy subjects under different forward trunk flexion angles and load cases. Apart from the freestyle lumbar posture, subjects were instructed to take either lordotic or kyphotic posture as well. A kinematics-based method along with a nonlinear finite element model were interactively used to compute muscle forces, internal loads and system stability margin under postures, and loads considered in in vivo investigations. RESULTS.: In comparison with the kyphotic postures, the lordotic postures increased the pelvic rotation, active component of extensor muscle forces, segmental axial compression and shear forces at L5-S1, and spinal stability margin while decreasing the passive muscle forces and segmental flexion moments. CONCLUSION:Alterations in the lumbar lordosis in lifting resulted in significant changes in the muscle forces and internal spinal loads. Spinal shear forces at different segmental levels were influenced by changes in both the disc inclinations and extensor muscle lines of action as the posture altered. Considering internal spinal loads and active-passive muscle forces, the current study supports the freestyle posture or a posture with moderate flexion as the posture of choice in static lifting tasks.


Spine (Phila Pa 1976)




Arjmand N,Shirazi-Adl A





Has Abstract


2005-12-01 00:00:00
















  • Surgical strategy for cervical myelopathy due to ossification of the posterior longitudinal ligament: Part 2: Advantages of anterior decompression and fusion over laminoplasty.

    abstract:STUDY DESIGN:Retrospective study of 27 patients who underwent anterior decompression and fusion (ADF) for treatment of cervical myelopathy due to ossification of the posterior longitudinal ligament (OPLL). OBJECTIVES:To compare surgical outcome of ADF with that of laminoplasty. SUMMARY OF BACKGROUND DATA:During the p...


    pub_type: 杂志文章,多中心研究


    authors: Iwasaki M,Okuda S,Miyauchi A,Sakaura H,Mukai Y,Yonenobu K,Yoshikawa H

    更新日期:2007-03-15 00:00:00

  • Acute effects of nucleus pulposus on blood flow and endoneurial fluid pressure in rat dorsal root ganglia.

    abstract:STUDY DESIGN:An experimental study to elucidate the initial factors in the pathogenesis of lumbar pain caused by disc herniation. OBJECTIVE:To evaluate the effects of autologous nucleus pulposus on blood flow and endoneurial fluid pressure in dorsal root ganglia. SUMMARY OF BACKGROUND DATA:Human sciatica is known to ...


    pub_type: 杂志文章


    authors: Yabuki S,Kikuchi S,Olmarker K,Myers RR

    更新日期:1998-12-01 00:00:00

  • Back schools for nonspecific low back pain: a systematic review within the framework of the Cochrane Collaboration Back Review Group.

    abstract:STUDY DESIGN:A systematic review within the Cochrane Collaboration Back Review Group. OBJECTIVES:To assess the effectiveness of back schools for patients with nonspecific low back pain (LBP). SUMMARY OF BACKGROUND DATA:Since the introduction of the Swedish back school in 1969, back schools have frequently been used f...


    pub_type: 杂志文章,评审


    authors: Heymans MW,van Tulder MW,Esmail R,Bombardier C,Koes BW

    更新日期:2005-10-01 00:00:00

  • Using segmental renal artery as recipient artery for spinal reconstructive surgery.

    abstract:STUDY DESIGN:Report of the use of one segmental artery from the left renal artery as inflow source for reconstructing a spine with recalcitrant osteomyelitis. OBJECTIVE:To describe one difficult case of spinal osteomyelitis and our reconstruction procedure. SUMMARY OF BACKGROUND DATA:The use of a vascularized fibular...


    pub_type: 杂志文章


    authors: Yen YH,Hsieh TS,Hou SM,Wu SJ,Chen SC,Pu CM

    更新日期:2010-12-01 00:00:00

  • Potential Selection Bias in Observational Studies Comparing Cervical Disc Arthroplasty to Anterior Cervical Discectomy and Fusion.

    abstract:STUDY DESIGN:Retrospective study using a national administrative database. OBJECTIVE:To define the cohort differences in patient characteristics between patients undergoing cervical disc arthroplasty (CDA) and anterior cervical discectomy and fusion (ACDF) in a large national sample, and to describe the impact of thos...


    pub_type: 杂志文章


    authors: Goz V,Martin BI,Donnally CJ 3rd,Brodke D,Spina N,Lawrence B,Spiker WR

    更新日期:2020-07-15 00:00:00

  • Sagittal spinal posture after Pilates-based exercise in healthy older adults.

    abstract:STUDY DESIGN:Longitudinal, repeated-measures study. OBJECTIVE:The aim of this study was to determine changes in sagittal spinal posture in older adults during standing and sitting after a Pilates-based exercise program. SUMMARY OF BACKGROUND DATA:Pilates exercise is purported to improve posture, however, few peer-rev...


    pub_type: 杂志文章


    authors: Kuo YL,Tully EA,Galea MP

    更新日期:2009-05-01 00:00:00

  • Primary spinal natural killer/T-cell lymphoma successfully treated with concurrent chemoradiotherapy and autologous stem cell transplantation.

    abstract:STUDY DESIGN:This case report shows primary natural killer (NK)/T-cell lymphoma originating in the spine as the first case of successful treatment with autologous stem cell transplantation, along with case presentation and literature review. OBJECTIVE:For the proper treatment of this spinal tumor, the pathologic confi...


    pub_type: 杂志文章


    authors: Kim KT,Kim YB,Kim HJ,Cha YJ,Lee SJ,Park E

    更新日期:2012-05-01 00:00:00

  • A prospective randomized comparison of 270 degrees fusions to 360 degrees fusions (circumferential fusions).

    abstract:STUDY DESIGN:Prospective randomized comparison of anterior lumbar interbody fusion (ALIF) plus transpedicular instrumentation plus posterolateral fusion (PLF) (360 degrees fusion) to ALIF plus transpedicular instrumentation without PLF (270 degrees fusion). OBJECTIVES:To compare the clinical outcomes, costs, and utili...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Schofferman J,Slosar P,Reynolds J,Goldthwaite N,Koestler M

    更新日期:2001-05-15 00:00:00

  • Scheuermann kyphosis: the importance of tight hamstrings in the surgical correction.

    abstract:STUDY DESIGN:A historic cohort study of the sagittal alignment in 33 consecutive patients with surgically corrected thoracic Scheuermann kyphosis. OBJECTIVES:To determine if postsurgical imbalance, sagittal malalignment, and decreased lumbar-pelvic range of motion in patients with thoracic Scheuermann kyphosis is rela...


    pub_type: 临床试验,杂志文章


    authors: Hosman AJ,de Kleuver M,Anderson PG,van Limbeek J,Langeloo DD,Veth RP,Slot GH

    更新日期:2003-10-01 00:00:00

  • Facet joint asymmetry as a radiologic feature of lumbar intervertebral disc herniation in children and adolescents.

    abstract:STUDY DESIGN:This study compared the incidence of facet joint asymmetry between adult and juvenile patients with lumbar intervertebral disc herniation. OBJECTIVES:To determine the different distribution of the facet joint asymmetry between the adult and juvenile patients. SUMMARY OF BACKGROUND DATA:As early as 1967, ...


    pub_type: 杂志文章


    authors: Ishihara H,Matsui H,Osada R,Ohshima H,Tsuji H

    更新日期:1997-09-01 00:00:00

  • Postural alignment in barefoot and high-heeled stance.

    abstract::The posture of nineteen subjects under two conditions of footwear was analyzed for differences in the location of the line of gravity of the body with respect to anatomical landmarks. Intrasubject comparison of barefoot and high-heeled stance showed that the wearing of high heels caused lumbar flattening, a backward t...


    pub_type: 杂志文章


    authors: Opila KA,Wagner SS,Schiowitz S,Chen J

    更新日期:1988-05-01 00:00:00

  • Intraoperative computed tomography with integrated navigation system in spinal stabilizations.

    abstract::STUDY DESIGN.: A prospective interventional case-series study plus a retrospective analysis of historical patients for comparison of data. OBJECTIVE.: To evaluate workflow, feasibility, and clinical outcome of navigated stabilization procedures with data acquisition by intraoperative computed tomography. SUMMARY OF BA...


    pub_type: 杂志文章


    authors: Zausinger S,Scheder B,Uhl E,Heigl T,Morhard D,Tonn JC

    更新日期:2009-12-15 00:00:00

  • Saphenous nerve somatosensory evoked potentials: a novel technique to monitor the femoral nerve during transpsoas lumbar lateral interbody fusion.

    abstract:STUDY DESIGN:A retrospective analysis of a case series was performed. OBJECTIVE:To describe a novel technique to monitor femoral nerve function by analyzing the saphenous nerve somatosensory evoked potential (SSEP) during transpsoas surgical exposures of the lumbar spine. SUMMARY OF BACKGROUND DATA:During transpsoas ...


    pub_type: 杂志文章


    authors: Silverstein J,Mermelstein L,DeWal H,Basra S

    更新日期:2014-07-01 00:00:00

  • The use of fibrin sealant to reduce blood loss during Cotrel-Dubousset instrumentation for idiopathic scoliosis.

    abstract::The increased complexity of Cotrel-Dubousset instrumentation has, as an unexpected side effect, a potential increase in blood loss. A prospective randomized study was undertaken to test the hypothesis that application of a fibrin sealant to exposed cancellous bone can significantly reduce blood loss during Cotrel-Dubo...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Tredwell SJ,Sawatzky B

    更新日期:1990-09-01 00:00:00

  • Effectiveness and cost-effectiveness analysis of neuroreflexotherapy for subacute and chronic low back pain in routine general practice: a cluster randomized, controlled trial.

    abstract:STUDY DESIGN:A cluster randomized, controlled trial was performed. OBJECTIVES:To assess the clinical effectiveness and cost-effectiveness of adding patients' referral to neuroreflexotherapy intervention to the usual management of subacute and chronic low back pain in routine general practice. SUMMARY OF BACKGROUND DA...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Kovacs FM,Llobera J,Abraira V,Lázaro P,Pozo F,Kleinbaum D,KAP Group.

    更新日期:2002-06-01 00:00:00

  • The long-term follow-up of surgical treatment for cervical myelopathy with severe nape and upper arm pain caused by the anomalous vertebral artery: case report.

    abstract:STUDY DESIGN:A case of cervical myelopathy with a severe nape and upper arm pain caused by anomalous bilateral vertebral arteries is reported. OBJECTIVE:To report over six and a half years results of a microsurgical decompression for high cervical myelopathy with a severe pain of nape and upper arm resulting from spin...


    pub_type: 杂志文章


    authors: Takei H,Sagae M,Chiba K,Ogino T

    更新日期:2008-08-01 00:00:00

  • Immunohistochemical demonstration of sensory and autonomic nerve terminals in herniated lumbar disc tissue.

    abstract:STUDY DESIGN:Thirty-five lumbar disc herniations removed at surgery were studied by indirect immunocytochemistry. OBJECTIVES:To localize immunohistochemically both sensory and autonomic nerve terminals in disc herniations. SUMMARY OF BACKGROUND DATA:Using various more or less specific histologic and histochemical met...


    pub_type: 杂志文章


    authors: Palmgren T,Grönblad M,Virri J,Seitsalo S,Ruuskanen M,Karaharju E

    更新日期:1996-06-01 00:00:00

  • The thoracolumbar and lumbosacral transitional junctions.

    abstract::Correct dermatome identification is essential to reduce nomenclature and surgical errors, to improve neurologic correlation, and to produce accurate statistics regarding low-back problems. The phylogenetic category of the spine must be known and junctional transitional vertebrae within the column properly identified a...


    pub_type: 杂志文章


    authors: Wigh RE

    更新日期:1980-05-01 00:00:00

  • Cognitive Patient Education for Low Back Pain in Primary Care: A Cluster Randomized Controlled Trial and Cost-Effectiveness Analysis.

    abstract:STUDY DESIGN:A pragmatic cluster randomized controlled trial in primary care. OBJECTIVE:The aim of this study was to estimate the clinical effectiveness and cost-effectiveness of a cognitive-based education program on patients with subacute or chronic low back pain (LBP) in primary care, compared to usual treatment, p...


    pub_type: 杂志文章,随机对照试验


    authors: Werner EL,Storheim K,Løchting I,Wisløff T,Grotle M

    更新日期:2016-03-01 00:00:00

  • Near infrared spectroscopy for intraoperative monitoring of the spinal cord.

    abstract:STUDY DESIGN:Animal model study of three healthy commercial pigs was conducted. OBJECTIVE:To determine whether near infrared spectroscopic monitoring of the spinal cord is feasible, and whether changes in near infrared spectroscopy correlate with changes in blood flow to the cord or operative maneuvers. SUMMARY OF BA...


    pub_type: 杂志文章


    authors: Macnab AJ,Gagnon RE,Gagnon FA

    更新日期:2002-01-01 00:00:00

  • Lymphocyte Count at 4 Days Postoperatively: A Reliable Screening Marker for Surgical Site Infection After Posterior Lumbar Decompression Surgery.

    abstract:STUDY DESIGN:Case-control study. OBJECTIVE:To identify laboratory markers for surgical site infection (SSI) in posterior lumbar decompression surgery, which are not affected by operative factors, and to determine the diagnostic cutoffs of these markers. SUMMARY OF BACKGROUND DATA:Numerous laboratory markers are used ...


    pub_type: 杂志文章,多中心研究


    authors: Iwata E,Shigematsu H,Yamamoto Y,Tanaka M,Okuda A,Morimoto Y,Masuda K,Nakajima H,Koizumi M,Tanaka Y

    更新日期:2018-09-15 00:00:00

  • Family stature in idiopathic scoliosis.

    abstract::The standing heights of 40 children with scoliosis and 110 persons from their immediate families were compared with those of a group of 349 contemporary control subjects. Skeletal bone ages and puberty ratings did not differ from normal, but the children with scoliosis were found to be significantly taller than the co...


    pub_type: 杂志文章


    authors: Carr AJ,Jefferson RJ,Turner-Smith AR

    更新日期:1993-01-01 00:00:00

  • A new approach to the failed, failed back syndrome.

    abstract::A new screening test and operative technique for the relief of intractable pain in the failed back syndrome has been devised and has yielded a 72% success rate on short-term follow-up (9--30 months) in 26 patients. This syndrome is thought to represent pain emanating from permanently damaged nerve roots and not from t...


    pub_type: 杂志文章


    authors: Hoppenstein R

    更新日期:1980-07-01 00:00:00

  • Automated percutaneous discectomy.

    abstract::Automated percutaneous discectomy is a new, safe procedure for treating herniated lumbar discs still contained by the annulus or posterior longitudinal ligament. In 1985, one of the authors reported a percutaneous nucleus aspiration technique using a 2-mm aspiration probe. This small probe produced minimal tissue dama...


    pub_type: 杂志文章


    authors: Davis GW,Onik G,Helms C

    更新日期:1991-03-01 00:00:00

  • Three-dimensional rotational X-ray imaging for spine surgery: a quantitative validation study comparing reconstructed images with corresponding anatomical sections.

    abstract:STUDY DESIGN:A validation study was done in which reconstructed three-dimensional rotational x-ray images were quantitatively compared with corresponding anatomic sections. OBJECTIVES:To assess the accuracy of reconstructed images acquired on a three-dimensional rotational x-ray imaging device. SUMMARY OF BACKGROUND ...


    pub_type: 杂志文章


    authors: Verlaan JJ,van de Kraats EB,van Walsum T,Dhert WJ,Oner FC,Niessen WJ

    更新日期:2005-03-01 00:00:00

  • The action of resveratrol, a phytoestrogen found in grapes, on the intervertebral disc.

    abstract:STUDY DESIGN:Basic science, biologic study. OBJECTIVE:To determine the potential benefits of using resveratrol (RSV) for intervertebral disc (IVD) matrix repair and regeneration. SUMMARY OF BACKGROUND DATA:The phytoestrogen RSV is a natural compound found in various plants including grapes and red wines. RSV has been...


    pub_type: 杂志文章


    authors: Li X,Phillips FM,An HS,Ellman M,Thonar EJ,Wu W,Park D,Im HJ

    更新日期:2008-11-15 00:00:00

  • Impaired postural stability in patients with cervical myelopathy: evaluation by computerized static stabilometry.

    abstract:STUDY DESIGN:A prospective clinical study. OBJECTIVE:To quantitatively evaluate impairment of postural stability in patients with cervical myelopathy. SUMMARY OF BACKGROUND DATA:Proprioceptive sensation plays an important role in coordinated movement of the lower extremities and postural stability. Nevertheless, alth...


    pub_type: 杂志文章


    authors: Yoshikawa M,Doita M,Okamoto K,Manabe M,Sha N,Kurosaka M

    更新日期:2008-06-15 00:00:00

  • Spinal pain mechanisms.

    abstract::Pain is an extremely complex process that involves the interaction of an array of neurotransmitters and neuromodulators at all levels of the neuraxis. Identification of the receptors and processes that are involved in the transmission of pain at a spinal level has led to the use of new agents and new techniques in pai...


    pub_type: 杂志文章,评审


    authors: Siddall PJ,Cousins MJ

    更新日期:1997-01-01 00:00:00

  • The Association Between Patient Reported Outcomes of Spinal Surgery and Societal Costs: A Register Based Study.

    abstract:STUDY DESIGN:Retrospective register-based study using Swedish registers and data prospectively collected in quality register Swespine. OBJECTIVE:Analyze the association of societal costs and spine surgery outcome in low back pain (LBP) patients based on patient reported outcome measures (PROMs). SUMMARY OF BACKGROUND...


    pub_type: 杂志文章


    authors: Hansson-Hedblom A,Jonsson E,Fritzell P,Hägg O,Borgström F

    更新日期:2019-09-01 00:00:00

  • Zebris versus Myrin: a comparative study between a three-dimensional ultrasound movement analysis and an inclinometer/compass method: intradevice reliability, concurrent validity, intertester comparison, intratester reliability, and intraindividual variab

    abstract:STUDY DESIGN:Experimental study. OBJECTIVES:To compare two devices for measuring cervical range of motion, a three-dimensional ultrasound motion device (Zebris) and a gravity-reference goniometer (Myrin). SUMMARY OF BACKGROUND DATA:Assessment of cervical range of motion is used to evaluate the effect of different tre...


    pub_type: 杂志文章


    authors: Malmström EM,Karlberg M,Melander A,Magnusson M

    更新日期:2003-11-01 00:00:00