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Spinopelvic reconstruction

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https://www.readbyqxmd.com/read/29905058/-application-of-second-sacral-alar-iliac-screw-technique-for-reconstruction-of-spinopelvic-stability
#1
REVIEW
Nanwei Zhang, Binsheng Yu
Objective: To summarize the current research progress of second sacral alar-iliac (S 2 AI) screw technique for reconstruction of spinopelvic stability. Methods: The recent original literature concerning development, clinical applications, anatomy, imageology, and biomechanics of S 2 AI screw technique in reconstruction of spinopelvic stability was reviewed and analyzed. Results: As a common clinical strategy for the reconstruction of spinopelvic stability, S 2 AI screws achieve satisfactory effectiveness of lumbosacral fixation without complications which were found during the application of traditional iliac screws technique...
June 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/29847417/spinopelvic-alignment-in-subjects-with-down-syndrome
#2
Ayman Assi, Ziad Bakouny, Elie Mansour, Jean-Jacques Yaacoub, Fares Yared, Ismat Ghanem
STUDY DESIGN: This was a cross-sectional study. OBJECTIVE: The aim of this study was to describe the spinopelvic alignment of subjects with Down syndrome (DS). SUMMARY OF BACKGROUND DATA: Subjects with DS are known to suffer from a large prevalence of scoliosis. While scoliosis is known to significantly affect postural alignment, there are currently no studies on the spinopelvic alignment of subjects with DS. MATERIALS AND METHODS: In total, 41 subjects (28 female subjects and 13 male subjects) with DS, age and sex-matched to 41 asymptomatic subjects, underwent biplanar x-rays with 3-dimensional reconstructions of their spines and pelvises, followed by measurement of commonly used spinopelvic sagittal and coronal alignment parameters...
May 25, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29846363/variability-in-assessing-spinopelvic-parameters-with-lumbosacral-transitional-vertebrae-inter-and-intraobserver-reliability-among-spine-surgeons
#3
Amrit S Khalsa, Gregory M Mundis, Mitsuru Yagi, Richard G Fessler, Shay Bess, Naobumi Hosogane, Paul Park, Khoi D Than, Alan Daniels, Justin Iorio, Justin B Ledesma, Stacie Tran, Robert K Eastlack
STUDY DESIGN: Prospectively collected survey study OBJECTIVE.: The aim of this study was to determine the consistency with which spinopelvic parameters (SPP) are determined in patients with lumbosacral transitional vertebrae (LSTV). SUMMARY OF BACKGROUND DATA: The incidence of LSTV in the general population is as high as 35.6%. The often fixed nature of LSTV relative to the pelvis, but lumbar-type appearance, may lead to differential use of the S1 endplate when performing SPP assessment...
June 15, 2018: Spine
https://www.readbyqxmd.com/read/29806335/-development-and-current-situation-of-reconstruction-methods-following-total-sacrectomy
#4
Siyi Huang, Tao Ji, Wei Guo
Objective: To review the development of the reconstruction methods following total sacrectomy, and to provide reference for finding a better reconstruction method following total sacrectomy. Methods: The case reports and biomechanical and finite element studies of reconstruction following total sacrectomy at home and abroad were searched. Development and current situation were summarized. Results: After developing for nearly 30 years, great progress has been made in the reconstruction concept and fixation techniques...
May 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/29727335/spinopelvic-fixation
#5
Sean M Esmende, Kalpit N Shah, Alan H Daniels
Fixation at the lumbosacral junction continues to be a challenge for spine surgeons despite advances in spinal instrumentation techniques. The poor bone quality of the sacrum, the complex regional anatomy, and the tremendous biomechanical forces at the lumbosacral junction contribute to the high rates of instrumentation-related complications. Although many spinopelvic fixation techniques have been reported, only a few are still widely used because of the high complication rates associated with previous techniques...
June 1, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29721550/evaluation-of-functional-and-structural-leg-length-discrepancy-in-patients-with-adolescent-idiopathic-scoliosis-using-the-eos-imaging-system-a-prospective-comparative-study
#6
Tatsuhiro Sekiya, Yoichi Aota, Katsutaka Yamada, Kanichiro Kaneko, Manabu Ide, Tomoyuki Saito
Background: To our knowledge, no studies have reported the exact structural leg length discrepancies (LLDs) in patients with adolescent idiopathic scoliosis (AIS). Therefore, this study aimed to evaluate the differences between functional and structural LLDs and to examine the correlations between LLDs and spinopelvic parameters in patients with AIS using an EOS imaging system, which permits the three-dimensional reconstruction of spinal and lower-limb bony structures. Methods: Eighty-two consecutive patients with AIS underwent whole-body EOS radiography in a standing position between August 2014 and March 2016...
2018: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/29672421/human-versus-robot-a-propensity-matched-analysis-of-the-accuracy-of-free-hand-versus-robotic-guidance-for-placement-of-s2-alar-iliac-s2ai-screws
#7
Jamal N Shillingford, Joseph L Laratta, Paul J Park, Joseph M Lombardi, Alexander Tuchman, Comron S Saifi, Ronald A Lehman, Lawrence G Lenke
STUDY DESIGN: Retrospective matched cohort analysis. OBJECTIVE: To compare the accuracy of S2 alar-iliac (S2AI) screw placement by robotic guidance versus free hand technique. SUMMARY OF BACKGROUND DATA: Spinopelvic fixation utilizing S2AI screws provides optimal fixation across the lumbosacral junction allowing for solid fusion, especially in long segment fusion constructs. Traditionally, S2AI screw placement has required fluoroscopic guidance for accurate screw placement...
April 18, 2018: Spine
https://www.readbyqxmd.com/read/29538241/factors-associated-with-spinopelvic-fixation-mechanical-failure-after-total-sacrectomy
#8
Xiaodong Tang, Rongli Yang, Huayi Qu, Zhenyu Cai, Wei Guo
STUDY DESIGN: We retrospectively analyzed factors associated with spinopelvic mechanical failure after total sacrectomy. OBJECTIVE: To find the rate and type of mechanical fixation failure after total sacrectomy and to identify the associated risk factors. SUMMARY OF BACKGROUND DATA: Although rigid fixation has been achieved, mechanical failure is sometimes encountered in reconstruction after total sacrectomy. The incidence and factors associated with spinopelvic fixation mechanical failure after total sacrectomy are still not clear...
March 13, 2018: Spine
https://www.readbyqxmd.com/read/29433530/correlation-between-lumbar-intervertebral-disc-height-and-lumbar-spine-sagittal-alignment-among-asymptomatic-asian-young-adults
#9
Feng Zhang, Kai Zhang, Hai-Jun Tian, Ai-Min Wu, Xiao-Fei Cheng, Tang-Jun Zhou, Jie Zhao
BACKGROUND: To investigate the distribution and characteristics of the lumbar intervertebral disc height (IDH) in asymptomatic Asian population and to determine whether the lumbar IDH is related to the lumbar spine sagittal alignment. METHODS: A cohort of 169 cases of asymptomatic volunteers was enrolled from January 2014 to July 2016. All participants underwent magnetic resonance imaging of the lumbar spine and panoramic radiography of the spine. Panoramic radiographs of the spine were taken to evaluate pelvic incidence (PI), sacral slope (SS), and pelvic tilt (PT) using Surgimap® software...
February 12, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29419634/are-there-age-and-sex-related-differences-in-spinal-sagittal-alignment-and-balance-among-taiwanese-asymptomatic-adults
#10
Kuang-Ting Yeh, Ru-Ping Lee, Ing-Ho Chen, Tzai-Chiu Yu, Cheng-Huan Peng, Kuan-Lin Liu, Jen-Hung Wang, Wen-Tien Wu
BACKGROUND: Sagittal spinopelvic balance and proper sagittal alignment are important when planning corrective or reconstructive spinal surgery. Prior research suggests that people from different races and countries have moderate divergence; to the best of our knowledge, the population of Taiwan has not been studied with respect to this parameter. QUESTIONS/PURPOSES: To investigate normal age- and sex-related differences in whole-spine sagittal alignment and balance of asymptomatic adults without spinal disorders...
May 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29277028/are-we-simplifying-balance-evaluation-in-adolescent-idiopathic-scoliosis
#11
Saba Pasha, Keith Baldwin
BACKGROUND: Clinical evaluation of the postural balance in adolescent idiopathic scoliosis has been measured by sagittal vertical axis and frontal balance. The impact of the scoliotic deformity in three planes on balance has not been fully investigated. METHODS: 47 right thoracic and left lumbar curves adolescent idiopathic scoliosis and 10 non-scoliotic controls were registered prospectively. 13 spinopelvic postural parameters were calculated from the 3-dimantional reconstructions of X-rays...
January 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/28984735/variability-in-assessing-spinopelvic-parameters-with-lumbosacral-transitional-vertebrae-inter-and-intra-observer-reliability-among-spine-surgeons
#12
Amrit S Khalsa, Gregory M Mundis, Mitsuru Yagi, Richard Fessler, Shay Bess, Naobumi Hosogane, Paul Park, Khoi Than, Alan Daniels, Justin Iorio, Justin Ledesma, Stacie Tran, Robert K Eastlack
STUDY DESIGN: Prospectively-collected survey study OBJECTIVE.: To determine the consistency with which spino-pelvic parameters (SPP) are determined in patients with lumbosacral transitional vertebrae (LSTV). SUMMARY OF BACKGROUND DATA: The incidence of LSTV in the general population is as high as 35.6%. The often fixed nature of LSTV relative to the pelvis, but lumbar-type appearance, may lead to differential use of the S1 endplate when performing SPP assessment...
October 3, 2017: Spine
https://www.readbyqxmd.com/read/28971089/posterior-sacroiliac-osteotomy-an-alternative-to-the-ilioinguinal-approach-for-pelvic-reconstruction-in-misalignment-lesions
#13
João Antonio Matheus Guimarães, Vinícius Magno da Rocha, André Luiz Loyelo Barcellos
Pelvic ring fractures occur in association with potentially fatal lesions, whose treatment is a priority in the polytrauma setting. As consequence, the definitive orthopedic approach may be postponed, leading patients to chronic and potentially disabling deformities. The treatment of these deformities is a challenge, requiring highly complex and staged surgical reconstructions. The ilioinguinal approach has been widely used in these surgeries, because it allows the release and mobilization of the hemipelvis and, in some cases, anterior fixation of the sacroiliac joint...
2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28791464/a-computed-tomographic-anatomical-study-of-the-upper-sacrum-application-for-a-user-guide-of-pelvic-fixation-with-iliosacral-screws-in-adult-spinal-deformity
#14
Arnaud Dubory, Houssam Bouloussa, Guillaume Riouallon, Stéphane Wolff
PURPOSE: Widely used in traumatic pelvic ring fractures, the iliosacral (IS) screw technique for spino-pelvic fixation remains anecdotal in adult spinal deformity. The objective of this study was to assess anatomical variability of the adult upper sacrum and to provide a user guide of spino-pelvic fixation with IS screws in adult spinal deformity. METHODS: Anatomical variability of the upper sacrum according to age, gender, height and weight was sought on 30 consecutive pelvic CT-scans...
December 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28686145/minimally-invasive-dual-iliac-screw-dual-rod-fixation-in-a-rare-case-of-pathological-sacral-fracture-from-a-paraganglionoma-a-technique-description
#15
Muhammed Yaser Hasan, Gabriel Liu
The management of lumbosacral neoplastic disease can be demanding, often requiring complex reconstruction. In the context of extensive sacral involvement, the risk of iliac screw breakage is greater. Few studies advocate the use of dual iliac screw techniques to reduce implant failure. In this report, the authors have described the first case of percutaneous dual iliac screw, dual rod insertion as part of a minimally invasive spinopelvic stabilization in a patient with a sacral fracture from a paraganglionoma...
September 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28678130/outcomes-and-complications-of-reconstruction-with-use-of-free-vascularized-fibular-graft-for-spinal-and-pelvic-defects-following-resection-of-a-malignant-tumor
#16
Matthew T Houdek, Peter S Rose, Karim Bakri, Eric R Wagner, Michael J Yaszemski, Franklin H Sim, Steven L Moran
BACKGROUND: Following resection of malignant tumors of the spine and pelvis, reconstructive surgeons often face large structural defects. Unlike reconstruction in the extremities, wherein a free vascularized fibular graft (FVFG) is a highly utilized option for segmental osseous reconstruction, there are limited data on the use of an FVFG in the spine and pelvis. The aim of this study was to review our institution's experience with reconstruction with use of an FVFG following oncological resection in the spine and pelvis...
July 5, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28622901/tridimensional-analysis-of-rotatory-subluxation-and-sagittal-spinopelvic-alignment-in-the-setting-of-adult-spinal-deformity
#17
Emmanuelle Ferrero, Renaud Lafage, Bassel G Diebo, Vincent Challier, Brice Illharreborde, Frank Schwab, Wafa Skalli, Pierre Guigui, Virginie Lafage
STUDY DESIGN: Retrospective single-center. OBJECTIVE: To investigate rotatory subluxation (RS) in adult spinal deformity (ASD) with three-dimensional (3D) stereoradiographic images and analyze relationships between RS, transverse plane parameters, spinopelvic parameters, and clinical outcomes. BACKGROUND: Recent research has demonstrated that sagittal plane malalignment and listhesis correlate with ASD patient-reported outcomes. However, there is still a lack of knowledge regarding the clinical impact of 3D evaluation and rotatory subluxation...
July 2017: Spine Deformity
https://www.readbyqxmd.com/read/28524126/-impact-of-sagittal-balance-parameters-on-life-quality-in-elderly-and-senile-patients-after-surgery-for-degenerative-lumbar-spine-stenosis
#18
V S Klimov, I I Vasilenko, A V Evsyukov, E V Amelina
INTRODUCTION: As the life span and proportion of people over 65 years increase, the incidence of degenerative lumbar spine stenosis grows proportionally. Various parameters of the spinopelvic relationships are used to predict surgical treatment outcomes in patients with degenerative spine diseases. There are no unified protocols for evaluation, in terms of the sagittal balance, of surgical treatment outcomes in elderly patients. PURPOSE: To study the impact of sagittal balance parameters on the life quality of elderly and senile patients after surgery for degenerative stenosis of the lumbar spine...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/27817139/three-dimensional-reconstruction-using-stereoradiography-for-evaluating-adult-spinal-deformity-a-reproducibility-study
#19
Emmanuelle Ferrero, Renaud Lafage, Shaleen Vira, Pierre-Yves Rohan, Jonathan Oren, Edward Delsole, Pierre Guigui, Frank Schwab, Virginie Lafage, Wafa Skalli
PURPOSE: In addition to the sagittal alignment, impact of transverse plane parameters (TPP) and rotatory subluxation on patients reported outcomes were highlighted. One of the hypotheses for genesis of degenerative scoliosis is disc degeneration with increased axial vertebral (AVR) and intervertebral rotation (AIR). Therefore, TPP analysis at early stage of the scoliosis seems of particular interest. This study aims at assessing reliability of tridimensional (3D) reconstructions of adult spinal deformity (ASD) patients...
August 2017: European Spine Journal
https://www.readbyqxmd.com/read/27642817/changes-in-pelvic-incidence-pelvic-tilt-and-sacral-slope-in-situations-of-pelvic-rotation
#20
Hai-Ming Jin, Dao-Liang Xu, Jun Xuan, Jiao-Xiang Chen, Kai Chen, Amit Goswami, Yu Chen, Qiu-Yan Kong, Xiang-Yang Wang
STUDY DESIGN: Digitally reconstructed radiograph-based study. OBJECTIVE: Using a computer-based method to determine what degree of pelvic rotation is acceptable for measuring the pelvic incidence (PI), pelvic tilt (PT), and sacral slope (SS). The effectiveness of a geometrical formula used to calculate the angle of pelvic rotation proposed in a previous article was assessed. SUMMARY OF BACKGROUND DATA: It is unclear whether PI, PT, and SS are valid with pelvic rotation while acquiring a radiograph...
August 2017: Clinical Spine Surgery
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