Kinematics of the canine lumbar intervertebral joint. An in vivo study before and after adjacent instrumentation.


STUDY DESIGN:In vivo, canine lumbar spine intervertebral motion was measured before and after instrumentation of caudal segments. The three-dimensional kinematics of the intervertebral joint were described using helical axes and Fourier series. OBJECTIVE:The in vivo three-dimensional kinematics of the intervertebral joint were measured and described. An animal model where intervertebral motion could be repeatedly changed was developed. SUMMARY OF BACKGROUND DATA:The kinematics of intervertebral joints have been described from results of extensive in vitro testing, some limited in vivo testing, and clinically by evaluation of flexion/extension films. In the canine, in vivo intervertebral motion has been described previously, but the method possessed some measurement artifact. METHODS:In vivo, four canines had motion data collected (L2-L3) while the animals walked on a treadmill. L3 To L7 were instrumented in all of the animals and motion testing was repeated 1 and 12 weeks later. Helical axes of motion were determined for each gait cycle. Fourier series were fit to the motion data, helical axis parameters, and Fourier coefficients were all statistically compared (pre- and postinstrumentation). RESULTS:Vertebral rotations (coronal plane) and excursion of the L2/3 facet increased significantly (P < 0.01) after caudal instrumentation. Helical axes were oriented in a ventral direction and only the angle of rotation about the axis changed significantly (P < 0.05) after instrumentation of caudal segments. The Fourier coefficients (amplitudes) showed a significant (P < 0.05) increase in the coronal plane rotations only, after adjacent instrumentation. CONCLUSION:The in vivo kinematics of the intervertebral joint have been completely defined in this study. Some motion characteristics compare very well to human motion. Since motion at an intervertebral joint now can be repeatedly altered, this animal model shows promise as a useful tool for investigation of tissue response to changes in motion at a joint.


Spine (Phila Pa 1976)




Schendel MJ,Dekutoski MB,Ogilvie JW,Olsewski JM,Wallace LJ


Has Abstract


1995-12-01 00:00:00














  • Factors of thoracic cage deformity that affect pulmonary function in adolescent idiopathic thoracic scoliosis.

    abstract:STUDY DESIGN:This clinical study examined the association between pulmonary function and thoracic cage deformities in scoliosis. OBJECTIVE:To determine the factors in spinal and thoracic cage deformities that affect pulmonary function in scoliosis. SUMMARY OF BACKGROUND DATA:Pulmonary function in scoliosis has genera...


    pub_type: 杂志文章


    authors: Takahashi S,Suzuki N,Asazuma T,Kono K,Ono T,Toyama Y

    更新日期:2007-01-01 00:00:00

  • Intra-observer reproducibility and interobserver reliability of the radiographic parameters in the Spinal Deformity Study Group's AIS Radiographic Measurement Manual.

    abstract:STUDY DESIGN:Retrospective cross-sectional assessment of the reproducibility and reliability of radiographic parameters. OBJECTIVE:To measure the intra-examiner and interexaminer reproducibility and reliability of salient radiographic features. SUMMARY OF BACKGROUND DATA:The management and treatment of adolescent idi...


    pub_type: 杂志文章


    authors: Dang NR,Moreau MJ,Hill DL,Mahood JK,Raso J

    更新日期:2005-05-01 00:00:00

  • Can we predict the ultimate lumbar curve in adolescent idiopathic scoliosis patients undergoing a selective fusion with undercorrection of the thoracic curve?

    abstract:STUDY DESIGN:Retrospective review of anterior and posterior fusions for treatment of adolescent idiopathic thoracic scoliosis. OBJECTIVES:To delineate the best factors determining final lumbar curve magnitude in patients with adolescent idiopathic scoliosis undergoing a selective thoracic anterior or posterior spinal ...


    pub_type: 杂志文章


    authors: Dobbs MB,Lenke LG,Walton T,Peelle M,Della Rocca G,Steger-May K,Bridwell KH

    更新日期:2004-02-01 00:00:00

  • Long-term follow-up evaluation of surgery for ossification of the posterior longitudinal ligament.

    abstract:STUDY DESIGN:We compared anterior and posterior surgery for cervical myelopathy resulting from ossification of the posterior longitudinal ligament. Surgical techniques, based on shape and distribution of ossification of the posterior longitudinal ligament, were divided into four technical phases. OBJECTIVES:Long-term ...


    pub_type: 杂志文章


    authors: Goto S,Kita T

    更新日期:1995-10-15 00:00:00

  • Lumbar and lumbosacral fusions using Cotrel-Dubousset pedicle screws and rods.

    abstract::The first 50 consecutive patients stabilized with Cotrel-Dubousset rods for lumbar or lumbosacral fusions were followed for an average of 2 years. The occurrence of fusion, maintenance of alignment, and rate of hardware complications were examined. There were 28 men and 22 women, ages 18-87 years, and 133 vertebral le...


    pub_type: 杂志文章


    authors: Mac Millan MM,Cooper R,Haid R

    更新日期:1994-02-15 00:00:00

  • Risk factors for infection after spinal surgery.

    abstract:STUDY DESIGN:A retrospective case control analysis of 48 cases of postoperative infection following spinal procedures. OBJECTIVES:Spinal procedures that became infected after surgery were analyzed to identify the significance of preoperative and intraoperative risk factors. Characterization of the nature and timing of...


    pub_type: 杂志文章


    authors: Fang A,Hu SS,Endres N,Bradford DS

    更新日期:2005-06-15 00:00:00

  • Impact of a medical back care program on utilization of services and primary care physician satisfaction in a large, multispecialty group practice health maintenance organization.

    abstract:STUDY DESIGN:Samples of patients with new back pain were compared at two medical centers, one with and one without a medical back care program. OBJECTIVES:To measure the impact of a medical back care program on use of services and physician satisfaction in a health maintenance organization. SUMMARY OF BACKGROUND DATA...


    pub_type: 杂志文章


    authors: Branthaver B,Stein GF,Mehran A

    更新日期:1995-05-15 00:00:00

  • Prognostic factors for low back pain in patients referred for physiotherapy: comparing outcomes and varying modeling techniques.

    abstract:STUDY DESIGN:Data were derived from a randomized controlled trial on the (cost-) effectiveness of the implementation of the clinical guidelines on physiotherapy for low back pain in primary care. OBJECTIVES:To describe the course of low back pain in patients who are referred to physiotherapy, to identify clinically im...


    pub_type: 杂志文章


    authors: Bekkering GE,Hendriks HJ,van Tulder MW,Knol DL,Simmonds MJ,Oostendorp RA,Bouter LM

    更新日期:2005-08-15 00:00:00

  • Predictors of Vertebral Artery Injury in Isolated C2 Fractures Based on Fracture Morphology Using CT Angiography.

    abstract:STUDY DESIGN:Retrospective database analysis. OBJECTIVE:To determine C2 fracture patterns associated with vertebral artery injury (VAI) as assessed by computed tomography angiography. SUMMARY OF BACKGROUND DATA:The incidence of C2 fracture hospitalizations has increased significantly in the last decade. The vertebral...


    pub_type: 杂志文章


    authors: Durand D,Wu X,Kalra VB,Abbed KM,Malhotra A

    更新日期:2015-06-15 00:00:00

  • Low Intensity Pulsed Ultrasound Promotes the Extracellular Matrix Synthesis of Degenerative Human Nucleus Pulposus Cells Through FAK/PI3K/Akt Pathway.

    abstract:STUDY DESIGN:In vitro experimental study. OBJECTIVE:To investigate the effect of low-intensity pulsed ultrasound (LIPUS) on the extracellular matrix (ECM) synthesis of degenerative human nucleus pulposus cells and explore the molecular mechanism. SUMMARY OF BACKGROUND DATA:LIPUS has been used successfully for bone fr...


    pub_type: 杂志文章


    authors: Zhang X,Hu Z,Hao J,Shen J

    更新日期:2016-03-01 00:00:00

  • Primary solitary cervical amyloidosis: case report and review of the literature.

    abstract:STUDY DESIGN:A case report and literature review are presented. OBJECTIVE:To describe and review the clinical presentations, characteristic findings from imaging studies, types, differential diagnosis, prognosis, and treatment of amyloidoma arising within the vertebrae. SUMMARY OF BACKGROUND DATA:Amyloidoma can occur...


    pub_type: 杂志文章,评审


    authors: Iplikcioglu AC,Bek S,Gokduman CA,Cosar M,Sav A

    更新日期:2007-01-01 00:00:00

  • Lower preoperative Hounsfield unit measurements are associated with adjacent segment fracture after spinal fusion.

    abstract:STUDY DESIGN:Retrospective case-control study. OBJECTIVE:To determine the association of Hounsfield unit (HU) measurements with adjacent segment fractures after spinal fusion. SUMMARY OF BACKGROUND DATA:Adjacent segment fracture is a potentially devastating complication after spinal fusion surgery in osteoporotic pat...


    pub_type: 杂志文章


    authors: Meredith DS,Schreiber JJ,Taher F,Cammisa FP Jr,Girardi FP

    更新日期:2013-03-01 00:00:00

  • Evaluation of an advanced back pain rehabilitation program.

    abstract::The "Back-Pain Institute" at Sundsvall offers an advanced rehabilitation program to people with long-standing back pain. This program has been evaluated in a controlled prospective study. Data were gathered from questionnaires mailed on three occasions, from the sick insurance office and from the bureau of employment....


    pub_type: 杂志文章


    authors: Aberg J

    更新日期:1984-04-01 00:00:00

  • A method for assessing axial vertebral rotation based on differential rod curvature on the lateral radiograph.

    abstract:STUDY DESIGN:Bench-top and retrospective radiographical analyses to determine apical vertebral rotation based on differential rod curvature on the postoperative lateral radiograph. OBJECTIVE:To develop a clinically relevant methodology for measuring apical vertebral rotation on postoperative lateral radiographs in pat...


    pub_type: 杂志文章


    authors: Liu RW,Yaszay B,Glaser D,Bastrom TP,Newton PO

    更新日期:2012-08-15 00:00:00

  • Vertebral artery loop formation: a frequent cause of cervicobrachial pain.

    abstract:STUDY DESIGN:Patients with cervicobrachial pain were examined in detail with special attention to vertebral artery loop formation. OBJECTIVES:To determine the incidence, short-time natural course and response to a conservative approach to vertebral artery loop formation in a group of patients with cervicobrachial pain...


    pub_type: 临床试验,杂志文章


    authors: Paksoy Y,Levendoglu FD,Ogün CO,Ustün ME,Ogün TC

    更新日期:2003-06-01 00:00:00

  • Cost-effectiveness of lumbar spine radiography in primary care patients with low back pain.

    abstract:STUDY DESIGN:Fifty-two practices in the East Midlands, United Kingdom, were included. OBJECTIVES:To test the hypothesis that referral for lumbar spine radiography is cost-effective in primary care patients with low back pain of at least 6 weeks' duration compared with usual care in which referral is not routine. SUMM...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Miller P,Kendrick D,Bentley E,Fielding K

    更新日期:2002-10-15 00:00:00

  • Twenty-eight-year follow-up of anterior and posterior fusion for congenital kyphosis. A case report.

    abstract:STUDY DESIGN:Case report and long-term follow-up. OBJECTIVES:To answer the question of whether the operation performed was worthwhile and lasting. SUMMARY OF BACKGROUND DATA:Congenital kyphosis due to defects of vertebral body formation has a high incidence of paraplegia if not surgically stabilized. Traditional post...


    pub_type: 杂志文章


    authors: Winter RB,Turek-Shay LA

    更新日期:1997-09-15 00:00:00

  • Evaluation of the flexion relaxation phenomenon of the trunk muscles in sitting.

    abstract:STUDY DESIGN:A normative, single-group study was conducted. OBJECTIVE:To investigate the flexion relaxation phenomenon in the thoraco-lumbopelvic muscles among a pain-free population when moving from an upright to a slump sitting posture. SUMMARY OF BACKGROUND DATA:The presence of the flexion relaxation phenomenon (F...


    pub_type: 杂志文章


    authors: O'Sullivan P,Dankaerts W,Burnett A,Chen D,Booth R,Carlsen C,Schultz A

    更新日期:2006-08-01 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

  • Radiation exposure to the spine surgeon during fluoroscopically assisted pedicle screw insertion.

    abstract:STUDY DESIGN:In vitro study to determine occupational radiation exposure during lumbar fluoroscopy. OBJECTIVES:To assess radiation exposure to the spine surgeon during fluoroscopically assisted thoracolumbar pedicle screw placement. SUMMARY OF BACKGROUND DATA:Occupational radiation exposure during a variety of fluoro...


    pub_type: 杂志文章


    authors: Rampersaud YR,Foley KT,Shen AC,Williams S,Solomito M

    更新日期:2000-10-15 00:00:00

  • Virtual fluoroscopy: computer-assisted fluoroscopic navigation.

    abstract:STUDY DESIGN:In vitro accuracy assessment of a novel virtual fluoroscopy system. OBJECTIVES:To investigate a new technology combining image-guided surgery with C-arm fluoroscopy. SUMMARY OF BACKGROUND DATA:Fluoroscopy is a useful and familiar technology to all musculoskeletal surgeons. Its limitations include radiati...


    pub_type: 杂志文章


    authors: Foley KT,Simon DA,Rampersaud YR

    更新日期:2001-02-15 00:00:00

  • Nucleus replacement device failure: a case report and biomechanical study.

    abstract:STUDY DESIGN:Case report and biomechanical study. OBJECTIVE:The objectives of this study were to report on a single case of a failed nucleus replacement device and to test the biomechanical properties of the failed device. SUMMARY OF BACKGROUND DATA:The use of spine arthroplasty techniques in the treatment of degener...


    pub_type: 杂志文章


    authors: Lindley EM,Jaafar S,Noshchenko A,Baldini T,Nair DP,Shandas R,Burger EL,Patel VV

    更新日期:2010-10-15 00:00:00

  • One-stage combined posterior and anterior approaches for excising thoracolumbar and lumbar tumors: surgical and oncological outcomes.

    abstract:STUDY DESIGN:Retrospective clinical and radiologic evaluation. OBJECTIVE:To investigate the feasibility of a 1-stage combined posterior and anterior approaches for excising thoracolumbar and lumbar tumors with the patient lying in the lateral position. SUMMARY OF BACKGROUND DATA:Traditional anteroposterior approaches...


    pub_type: 杂志文章


    authors: Hu Y,Xia Q,Ji J,Miao J

    更新日期:2010-03-01 00:00:00

  • Magnetic resonance imaging of experimental subacute spinal cord compression.

    abstract:STUDY DESIGN:Subacute compression of the spinal cord was applied to rats. The animals were chronologically observed using magnetic resonance imaging for more than 8 weeks after surgery and were killed for histopathologic examination. OBJECTIVES:To investigate the correlation of changes in signal intensity on magnetic ...


    pub_type: 杂志文章


    authors: Fukuoka M,Matsui N,Otsuka T,Murakami M,Seo Y

    更新日期:1998-07-15 00:00:00

  • Changes in the lumbar spine of athletes from supine to the true-standing position in magnetic resonance imaging.

    abstract:STUDY DESIGN:Case-control observational study. OBJECTIVE:Determination of dimensional changes in the lumbar spines of athletes between supine and stand-up position in MRI, concerning the lordosis, spinal canal cross-sectional area (SCCA), dural sac cross-sectional area (DSCA), sagittal dural sac diameter (SDSD), the l...


    pub_type: 杂志文章


    authors: Mauch F,Jung C,Huth J,Bauer G

    更新日期:2010-04-20 00:00:00

  • Differences in the relationship between psychosocial distress and self-reported disability in patients with chronic low back pain in six pain rehabilitation centers in the Netherlands.

    abstract:STUDY DESIGN:A cross sectional multicenter study in six outpatient Rehabilitation Centers (RCs) in the Netherlands. OBJECTIVE:This study aims to confirm or refute the finding that a strong relationship exists between psychosocial distress and self-reported disability in patients with nonspecific chronic low back pain ...


    pub_type: 杂志文章,多中心研究,随机对照试验


    authors: Preuper HR,Boonstra AM,Wever D,Heuts PH,Dekker JH,Smeets RJ,Brouwer S,Geertzen JH,Reneman MF

    更新日期:2011-05-20 00:00:00

  • Treatment of unstable thoracolumbar and lumbar spine injuries using Cotrel-Dubousset instrumentation.

    abstract:STUDY DESIGN:In this prospective study, the results of treating unstable thoracolumbar and lumbar injuries with Cotrel-Dubousset instrumentation were investigated. OBJECTIVE:To determine the pain and work status of the patients, to evaluate neurologic status, and to assess the efficacy of instrumentation in the short ...


    pub_type: 杂志文章


    authors: Katonis PG,Kontakis GM,Loupasis GA,Aligizakis AC,Christoforakis JI,Velivassakis EG

    更新日期:1999-11-15 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

  • Ultrasound and nerve stimulation-guided L5 nerve root block.

    abstract:STUDY DESIGN:Case series. OBJECTIVE:Evaluation of ultrasound and nerve stimulation-guided L5 nerve root block technique. SUMMARY OF BACKGROUND DATA:Ultrasound-guided peripheral nerve block has become clinically applied. However, selective lumbosacral nerve root block is conducted under radiographic guidance, which in...


    pub_type: 杂志文章


    authors: Sato M,Simizu S,Kadota R,Takahasi H

    更新日期:2009-11-15 00:00:00

  • Multisurgeon assessment of surgical decision-making in adolescent idiopathic scoliosis: curve classification, operative approach, and fusion levels.

    abstract:STUDY DESIGN:A multisurgeon assessment of curve classification, selection of operative approach, and fusion levels via a case study presentation. OBJECTIVES:To evaluate the ability of a group of scoliosis surgeons, not involved in the development of a new classification system, to accurately choose the corresponding c...


    pub_type: 杂志文章


    authors: Lenke LG,Betz RR,Haher TR,Lapp MA,Merola AA,Harms J,Shufflebarger HL

    更新日期:2001-11-01 00:00:00