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| 1 | Spinal alignment evolution with age:A prospective gait analysis study显示文摘AIM To describe,using gait analysis,the development of spinal motion in the growing child.METHODS Thirty-six healthy children aged from 3 to 16 years old were included in this study for a gait analysis(9m-walk).Various kinematic parameters were recorded and analyzed such as thoracic angle(TA),lumbar angle(LA)and sagittal vertical axis(SVA).The kinetic parameters were the net reaction moments(N.m/kg)at the thoracolumbar and lumbosacral junctions.RESULTS TA and LA curves were not statistically correlated to the age(respectively,P=0.32 and P=0.41).SVA increased significantly with age(P<0.001).Moments in sagittal plane at the lumbosacral junction were statistically correlated to the age(P=0.003),underlining the fact that sagittal mechanical constraints at the lumbosacral junction increase with age.Moments in transversal plane at the thoracolumbar and lumbosacral junctions were statistically correlated to the age(P=0.0002and P=0.0006),revealing that transversal mechanical constraints decrease with age.CONCLUSION The kinetic analysis showed that during growth,a decrease of torsional constraint occurs while an increase of sagittal constraint is observed.These changes in spine biomechanics are related to the crucial role of the trunk for bipedalism acquisition,allowing stabilization despite lower limbs immaturity.With the acquisition of mature gait,the spine will mainly undergo constraints in the sagittal plane. | Sébastien Pesenti Benjamin Blondel Emilie Peltier Elke Viehweger Vincent Pomero Guillaume Authier Stéphane Fuentes Jean-Luc Jouve | 2017 | World Journal of Orthopedics2017，8，3： | 2 |
| 2 | Clinical Results of Lumbar Total Disc Arthroplasty in Accordance With Modic Signs, With a 2-Year-Minimum Follow-up显示文摘 | Benjamin Blondel Patrick Tropiano Jean Gaudart Russel C. Huang Thierry Marnay | 2011 | Spine2011，，26： | 1 |
| 3 | Small bowel entrapment and ureteropelvic junction disruption associated with L3 Chance fracture-dislocation显示文摘Paediatric Chance fracture are rare lesions but often associated with abdominal injuries. We herein present the case of a seven years old patient who sustained an entrapment of small bowel and an ureteropelvic disruption associated with a Chance fracture and spine dislocation following a traffic accident. Initial X-rays and computed tomographic(CT) scan showed a Chance fracture with dislocation of L3 vertebra, with an incarceration of a small bowel loop in the spinal canal and a complete section of the left lumbar ureter. Paraplegia was noticed on the initial neurological examination. A posterior L2-L4 osteosynthesis was performed firstly. In a second time she underwent a sus umbilical laparotomy to release the incarcerated jejunum loop in the spinal canal. An end-toend anastomosis was performed on a JJ probe to suture the left injured ureter. One month after the traumatism, she started to complain of severe headaches related to a leakage of cerebrospinalis fluid. Three months after the traumatism there was a clear regression of the leakage. One year after the trauma, an anterior intervertebral fusion was done. At final follow-up, no neurologic recovery was noticed. In case of Chance fracture, all physicians should think about abdominal injuries even if the patient is asymptomatic. Initial abdominal CT scan and magnetic resonance imaging provide in such case crucial info for management of the spine and the associated lesions. | Sebastien Pesenti Benjamin Blondel Alice Faure Emilie Peltier Franck Launay Jean-Luc Jouve | 2016 | World Journal of Clinical Cases2016，4，9： | 1 |
| 4 | Percutaneous kyphoplasty and pedicle screw fixation for the management of thoraco-lumbar burst fractures显示文摘 | Stéphane Fuentes Benjamin Blondel Philippe Metellus Jean Gaudart Tarek Adetchessi Henry Dufour | 2010 | European Spine Journal2010，，8： | 1 |
| 5 | Cervical Radiographical Alignment: Comprehensive Assessment Techniques and Potential Importance in Cervical Myelopathy显示文摘 | Christopher P. Ames Benjamin Blondel Justin K. Scheer Frank J. Schwab Jean-Charles Le Huec Eric M. Massicotte Alpesh A. Patel Vincent C. Traynelis Han Jo Kim Christopher I. Shaffrey Justin S. Smith Virginie Lafage | 2013 | 2013 (22S)2013，，22： | 1 |
| 6 | Postural spinal balance defined by net intersegmental moments: Results of a biomechanical approach and experimental errors measurement显示文摘AIM: To describe initial results and experimental error measurement of a protocol analyzing Human posture through sagittal intersegmental moments. METHODS: Postural analysis has been recently improved by development of three-dimensional radiographic imaging systems. However, in various situations such as global sagittal anterior malalignment interpretation of radiographs may not represent the real alignment of the subject. The aim of this study was to present initial results of a 3D biomechanical protocol. This protocol isobtained in a free standing position and characterizes postural balance by measurement of sagittal intersegmental net moments. After elaboration of a specific marker-set, 4 successive recordings were done on two volunteers by three different operators during three sessions in order to evaluate the experimental error measurement. A supplementary acquisition in a 'radiographic' posture was also obtained. Once the data acquired, joint center, length, anatomical frame and the center of mass of each body segment was calculated and a mass affected. Sagittal net intersegmental moments were computed in an ascending manner from ground reaction forces at the ankles, knees, hips and the lumbosacral and thoraco-lumbar spinal junctions. Cervicothoracic net intersegmental moment was calculated in a descending manner.RESULTS: Based on average recordings, clinical interpretation of net intersegmental moments(in N.m) showed a dorsal flexion on the ankles(8.6 N.m), a flexion on the knees(7.5 N.m) and an extension on the hips(8.5 N.m). On the spinal junctions, it was flexion moments: 0.34 N.m on the cervico-thoracic; 6.7 N.m on the thoraco-lumbar and 0.65 N.m on the lumbo-sacral. Evaluation of experimental error measurement showed a small inter-trial error(intrinsic variability), with higher inter-session and inter-therapist errors but without important variation between them. For one volunteer the 'radiographic' posture was associated to significant changes compared to the free standing position. CONCLUSION: These initial results confirm the technical feasibility of the protocol. The low intrinsic error and the small differences between inter-session and intertherapist errors seem to traduce postural variability over time, more than a failure of the protocol. Characterization of sagittal intersegmental net moments can have clinical applications such as evaluation of an unfused segment after a spinal arthrodesis. | Benjamin Blondel Elke Viehweger Bertrand Moal Patrick Tropiano Jean-Luc Jouve Virginie Lafage Raphael Dumas Stéphane Fuentes Gérard Bollini Vincent Pomero | 2015 | World Journal of Orthopedics2015，6，11： | 0 |
| 7 | French Spine Surgery Society guidelines for management of spinal surgeries during COVID-19 pandemic显示文摘Since the outbreak of coronavirus disease 2019(COVID-19)in December 2019 in China,various measures have been adopted in order to attenuate the impact of the virus on the population.With regard to spine surgery,French physicians are devoted to take place in the national plan against COVID-19,the French Spine Surgery Society therefore decided to elaborate specific guidelines for management of spinal disorders during COVID-19 pandemic in order to prioritize management of patients.A three levels stratification was elaborated with Level I:Urgent surgical indications,Level II:Surgical indications associated to a potential loss of chance for the patient and Level III:Non-urgent surgical indications.We also report French experience in a COVID-19 cluster region illustrated by two clinical cases.We hope that the guidelines formulated by the French Spine Surgery Society and the experience of spine surgeons from a cluster region will be helpful in order optimizing the management of patients with urgent spinal conditions during the pandemic. | Solène Prost Yann Philippe Charles Jérome Allain Jean-Luc Barat Henri d'Astorg Manuel Delhaye Chistophe Eap Fahed Zairi Pierre Guigui Brice Ilharreborde Jean Meyblum Jean-Charles Le Huec Nicolas Lonjon Guillaume Lot Olivier Hamel Guillaume Riouallon Stéphane Litrico Patrick Tropiano Benjamin Blondel | 2020 | World Journal of Clinical Cases2020，8，10： | 0 |
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