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Sacroiliac screws

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https://www.readbyqxmd.com/read/28306517/biomechanical-analysis-of-stiffness-and-fracture-displacement-after-using-pmma-augmented-sacroiliac-screw-fixation-for-sacrum-fractures
#1
Andreas Höch, Richard Schimpf, Niels Hammer, Stefan Schleifenbaum, Michael Werner, Christoph Josten, Jörg Böhme
Cement augmentation of pedicle screws is the gold standard for the stabilization of osteoporotic fractures of the spine. In-screw cement augmentation, in which cement is injected through the cannula, is another option for fracture stabilization of fragility fractures of the sacrum. However, biomechanical superiority of this technique compared to conventional sacroiliac screw fixation has not been tested. The present study compares the stability of cement-augmented and non-cement-augmented sacroiliac screw fixation in osteoporotic sacrum fractures under cyclic loading...
March 15, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28247976/bilateral-sacroiliac-luxation-fixation-using-a-single-transiliosacral-pin-surgical-technique-and-clinical-outcomes-in-eight-cats
#2
A Parslow, D J Simpson
OBJECTIVES: A very limited safe anatomical window for transiliosacral implant placement exists in cats (<0·5 cm 2 ). Lag screw fixation requires multiple bilateral implants thus increasing the risk of iatrogenic trauma and implant interference. We describe a safe and effective method for bilateral sacroiliac fixation in cats using a single implant to minimise inadvertent iatrogenic damage to local structures and restore pelvic canal diameter. MATERIALS AND METHODS: Eight cats underwent surgical fixation for traumatic bilateral sacroiliac luxation using a single smooth intramedullary pin...
March 1, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28243380/patient-reported-outcomes-from-sacroiliac-joint-fusion
#3
Vamsi K Kancherla, Shane M McGowan, Brittany N Audley, Gbolabo Sokunbi, Steven T Puccio
STUDY DESIGN: Retrospective, case series. PURPOSE: The purpose of this study is to determine morbidity, complications, and patient reported outcomes from minimally invasive sacroiliac joint (SIJ) fusion. OVERVIEW OF LITERATURE: Lumbar back pain emanating from the SIJ can be surgically treated via a percutaneous approach in the appropriately selected patient with minimal morbidity and acceptable functional outcomes. METHODS: Patients diagnosed by >2 physical examination maneuvers and subjective relief from a computed tomography-guided lidocaine-bupivacaine-steroid injection underwent SIJ fusion after failing conservative management with a combination of oral anti-inflammatory medications, physical therapy, and pelvic belt stabilization...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28242066/insertion-of-psoas-minor-tendon-at-pelvic-brim-a-novel-anatomic-landmark-for-extra-articular-screw-placement-through-stoppa-approach
#4
Ruipeng Zhang, Zhiyong Hou, Liping Zhang, Yingchao Yin, Wei Chen, Yingze Zhang
BACKGROUND: The psoas minor partially inserted to the superior pelvic brim. And the plate used to fix the acetabular fracture has always been positioned at the pelvic brim after reduction through the Stoppa approach. However, there are few studies depicting the clinical significance of the psoas minor. The purpose of this paper was to explore the relationship between the insertion of the psoas minor tendon at the pelvic brim (IPMTPB) and screw placement through the Stoppa approach. MATERIALS AND METHODS: Fifteen cadavers were dissected for adequate exposure to IPMTPB in our study...
February 21, 2017: Injury
https://www.readbyqxmd.com/read/28216399/minimally-invasive-sacroiliac-joint-fusion-using-a-novel-hydroxyapatite-coated-screw-preliminary-1-year-clinical-and-radiographic-results-of-a-2-year-prospective-study
#5
Louis H Rappoport, Ingrid Y Luna, Gita Joshua
OBJECTIVE: Proper diagnosis and treatment of sacroiliac joint (SIJ) pain remains a clinical challenge. Dysfunction of SIJ can produce pain in the lower back, buttocks, and extremities. Triangular titanium implants for minimally invasive surgical arthrodesis have been available for several years with reputed high levels of success and patient satisfaction. This study reports on a novel hydroxyapatite-coated screw for surgical treatment of SIJ pain. METHODS: Data were prospectively collected on 32 consecutive patients who underwent minimally invasive SIJ fusion with a novel hydroxyapatite-coated screw...
February 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28185981/analysis-of-the-s2-alar-iliac-screw-as-compared-with-the-traditional-iliac-screw-does-it-increase-stability-with-sacroiliac-fixation-of-the-spine
#6
Daniel G Hoernschemeyer, Troy D Pashuck, Ferris M Pfeiffer
BACKGROUND CONTEXT: Arthrodesis of the lumbosacral junction continues to be a challenge in pediatric and adult spinal deformity surgery. PURPOSE: To evaluate the biomechanical rigidity of two types of lumbosacral fixation. Our hypothesis was that the use of S2 alar-iliac (S2AI) fixation will result in statistically similar biomechanical fixation as compared with use of an iliac screw with a 95% confidence interval. STUDY SETTING: Controlled biomechanical laboratory METHODS: Ten human cadaveric lumbosacral specimens were separated into two test groups: (1) S2AI (n=5) and (2) iliac screw (n=5)...
February 6, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28107243/robotic-guidance-for-s2-alar-iliac-screws-in-spinal-deformity-correction
#7
S Samuel Bederman, Peter Hahn, Vincent Colin, P Douglas Kiester, Nitin N Bhatia
STUDY DESIGN: A retrospective cohort study of patients who underwent S2-alar-iliac (S2AI) screw insertion using robotic guidance in long constructs for spinal deformity correction extending to the sacrum performed at a single institution. OBJECTIVE: To assess and evaluate the feasibility and accuracy of robotic guidance for S2AI screw insertion. SUMMARY OF BACKGROUND DATA: Pelvic fixation has become a common adjunct to long fusions extending to the sacrum...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28104229/computational-analysis-of-the-safe-zone-for-the-antegrade-lag-screw-in-posterior-column-fixation-with-the-anterior-approach-in-acetabular-fracture-a-cadaveric-study
#8
Gu-Hee Jung, Yongkoo Lee, Joon-Woo Kim, Ji-Wan Kim
OBJECTIVE: The fluoroscopically-guided procedure of antegrade posterior lag screw in posterior column fixation through anterior approach is technique-dependent and requires an experienced surgeon. The purpose of this study was to establish the safe zone for the antegrade posterior lag screw by using computational analysis. METHOD: The virtual three-dimensional model of 178 hemi-pelvises was created from the CT data (DICOM format) by using Mimics(®) program, and were used to measure the safe zone of antegrade lag screw fixation on the inner table of the iliac wing, and the largest diameter of cylindrical implant inside safe zone...
January 13, 2017: Injury
https://www.readbyqxmd.com/read/28097243/range-of-motion-sacral-screw-and-rod-strain-in-long-posterior-spinal-constructs-a-biomechanical-comparison-between-s2-alar-iliac-screws-with-traditional-fixation-strategies
#9
Chester E Sutterlin, Antony Field, Lisa A Ferrara, Andrew L Freeman, Kevin Phan
BACKGROUND: S1 screw failure and L5/S1 non-union are issues with long fusions to S1. Improved construct stiffness and S1 screw offloading can help avoid this. S2AI screws have shown to provide similar stiffness to iliac screws when added to L3-S1 constructs. We sought to examine and compare the biomechanical effects on an L2-S1 pedicle screw construct of adding S2AI screws, AxiaLIF, L5-S1 interbody support via transforaminal lumbar interbody fusion (TLIF), and to examine the effect of the addition of cross connectors to each of these constructs...
December 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27858725/2-year-clinical-results-of-patients-with-sacroiliac-joint-syndrome-treated-by-arthrodesis-using-a-triangular-implant-system
#10
Rahel Bornemann, Philip P Roessler, Andreas Strauss, Kirsten Sander, Yorck Rommelspacher, Dieter C Wirtz, Robert Pflugmacher, Sönke P Frey
BACKGROUND: Sacroiliac joint (SIJ) syndrome can cause various symptoms and may also be one reason for persistent low back pain, especially in patients with prior spinal fusions. If conservative treatments fail to improve symptoms, arthrodesis surgery can be considered. Minimally invasive approaches have emerged recently providing a good alternative to conventional methods. A novel triangular implant system (iFuse) can achieve an arthrodesis of the SIJ without the use of additional screws or bone material...
November 4, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27849110/evaluation-of-the-use-of-intra-operative-radiology-for-open-placement-of-lag-screws-for-the-stabilization-of-sacroiliac-luxation-in-cats
#11
Francisco Silveira, Robert J Quinn, Anna M Adrian, Martin R Owen, Mark A Bush
OBJECTIVES: To assess the effect of intra-operative radiology on the quality of lag screw insertion for the management of sacroiliac joint luxations in cats. METHODS: In this retrospective single-centre study, the surgical, anaesthetic and imaging records of 40 screws (32 cats) placed with lag effect for management of sacroiliac luxation were reviewed. Postoperative radiographs were assessed for sacroiliac joint reduction, screw position, and sacral width purchased by each screw...
January 16, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/27847854/spinopelvic-fixation-of-sacroiliac-joint-fractures-and-fracture-dislocations-a-clinical-8-years-follow-up-study
#12
Mohammad R Sobhan, Seyed Mohammad J Abrisham, Mahmood Vakili, Saeed Shirdel
BACKGROUND: Pelvic ring injuries and sacroiliac dislocations have significant impacts on patient's quality of life. Several techniques have been described for posterior pelvic fixation. The current study has been designed to evaluate the spinopelvic method of fixation for sacroiliac fractures and fracture-dislocations. METHODS: Between January 2006 and December 2014, 14 patients with sacroiliac joint fractures, dislocation and fracture-dislocation were treated by Spinopelvic fixation at Shahid Sadoughi Training Hospital, Yazd, Iran...
October 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27810321/safe-zone-for-transacetabular-screw-fixation-using-a-kerboull-cross-plate-a-ct-scan-templating-prospective-study
#13
T Ohmori, T Kabata, Y Kajino, K Hasegawa, D Inoue, H Tsuchiya
BACKGROUND: Implantation of Kerboull acetabular reinforcement cross-plates (Kerboull plate) carries a risk for injury to vascular structures and pelvic organs. To our knowledge, there is no study assessing anatomical assessment related to this risk with this specific design. Therefore, we performed a prospective study to answer the following four questions: 1) What is the minimum distance and angle between the plate and iliac vessels? 2) What is the distance between the plate and the inner cortex of the ilium? 3) What is the ratio of views with muscle tissue present on the inner surface of the ilium? 4) What are the boundaries of the safe zone for transacetabular screw fixation for a Kerboull plate? HYPOTHESIS: A safe zone for fixation screws would be defined by a narrow range of insertion angles...
December 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27795765/-surgical-management-of-sacroiliac-joint-lesions-in-unstable-pelvic-ring-fractures-using-percutaneous-iliosacral-screw-fixation
#14
Mohamed Amine Karabila, Ismail Hmouri, Tarik Madani, Younes Mhamdi, Mohamed Azouz, Mohamed Kharmaz, Mohamed Ouadaghiri, Moulay Omar Lamrani, Abdou Lahlou, Ahmed Bardouni, Mustapha Mahfoud, Mohamed Saleh Berrada, Christian Vasile
Pelvic fractures, usually are multiple, unstable fractures occuring most frequently due to violent traumatic events. Orthopedic treatment of these lesions is often distressing both to patients and medical personnel since it requires bed discharge or sometimes tractions which can have a duration up to 45 days and can compromise the static and the walking mechanisms; open operative management is difficult, carrying a significant burden in terms of morbidity and associated with vascular (venous plexus), nervous (sacred roots) or septic risk to take into account...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27749563/the-biomechanical-advantages-of-bilateral-lumbo-iliac-fixation-in-unilateral-comminuted-sacral-fractures-without-sacroiliac-screw-safe-channel-a-finite-element-analysis
#15
Wenhao Song, Dongsheng Zhou, Yu He
BACKGROUND: The aim of this study was to compare the biomechanical characteristics between bilateral and unilateral lumbo-iliac fixation in unilateral comminuted sacral fractures (USF) by finite element analysis. METHODS: A 3-dimensional finite element model of unilateral sacral fractures was simulated. Three kinds of implants were instrumented into the model, including the unilateral lumbopelvic fixation (ULF), bilateral lumbopelvic fixation (BLF), and unilateral iliac fixation with bilateral lumbar pedicle screws (UBF)...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27716018/less-invasive-lumbopelvic-fixation-technique-using-a-percutaneous-pedicle-screw-system-for-unstable-pelvic-ring-fracture-in-a-patient-with-severe-multiple-traumas
#16
Sei Yano, Yasuchika Aoki, Atsuya Watanabe, Takayuki Nakajima, Makoto Takazawa, Hiroyuki Hirasawa, Kazuhisa Takahashi, Koichi Nakagawa, Arata Nakajima, Hiroshi Takahashi, Sumihisa Orita, Yawara Eguchi, Takane Suzuki, Seiji Ohtori
Pelvic ring fractures are defined as life-threatening injuries that can be treated surgically with external or internal fixation. The authors report on an 81-year-old woman with an unstable pelvic fracture accompanying multiple traumas that was successfully treated with a less invasive procedure. The patient was injured in a traffic accident and sustained a total of 20 fractures, including pelvic ring, bilateral rib, and lumbar transverse processes fractures, and multiple fractures of both upper and lower extremities...
February 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27692112/is-cannulated-screw-fixation-an-alternative-to-plate-osteosynthesis-in-open-book-fractures-a-biomechanical-analysis
#17
Ángel Lázaro Gonzálvez, Javier Martínez Reina, Pedro Cano Luis, Juan Jiménez Baquero, José Sueiro Fernández, Miguel Ángel Giráldez Sánchez
OBJECTIVES: The current biomechanical work compares the symphyseal and sacroiliac stability obtained with two systems of bone osteosynthesis. The two methods of fixation compared were the 6-hole suprapubic non-locked plate and pubic fixation with two cannulated screws, a novel technique that can be applied percutaneously in the clinical practice. The aim of this study was to examine the validity of the use of two-cannulated-screws osteosynthesis in order to minimize the secondary effects of open fixation, especially in patients in whom an open reduction is contraindicated...
September 2016: Injury
https://www.readbyqxmd.com/read/27567387/impact-of-sacropelvic-fixation-on-the-development-of-postoperative-sacroiliac-joint-pain-following-multilevel-stabilization-for-degenerative-spine-disease
#18
T Finger, S Bayerl, M Bertog, M Czabanka, J Woitzik, P Vajkoczy
OBJECTIVE: We hypothesised, that the inclusion of the ilium for multilevel lumbosacral fusions reduces the incidence of postoperative sacroiliac joint (SIJ) pain. The primary objective of this study was to compare the frequency of postoperative SIJ pain in patients undergoing multilevel stabilization with and without sacropelvic fixation for multilevel degenerative spine disease. In addition, we aimed at identifying factors that may predict the worsening or new onset of postoperative SIJ pain...
November 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27564231/biomechanical-comparison-of-augmented-versus-non-augmented-sacroiliac-screws-in-a-novel-hemi-pelvis-test-model
#19
Niklas Grüneweller, Michael J Raschke, Ivan Zderic, Daniel Widmer, Dirk Wähnert, Boyko Gueorguiev, Robert Geoff Richards, Thomas Fuchs, Markus Windolf
Operative treatment of sacral insufficiency fractures is frequently being complicated by osteopenic bone properties. Cement augmentation of implanted sacroiliac screws may lead to superior construct stability and prevent mechanical complications. A novel hemi-pelvis test model with dissected symphysis was developed. Five fresh-frozen cadaveric pelvises were vertically osteotomized at the sacrum on both sides and fixed with sacroiliac screws in both corridors of the first sacral vertebral body. One side was randomly augmented with bone cement...
August 26, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27552712/simple-mathematical-model-of-sacroiliac-screws-safe-zone-easy-to-implement-by-pelvic-inlet-and-outlet-views
#20
Amir Herman, Emily Keener, Candice Dubose, Jason A Lowe
Percutaneous sacral screw fixation is the mainstay of posterior pelvic ring fixation. This study quantifies the accuracy of fluoroscopic screw placement using post-operative CT scans and redefines the fluoroscopic safe zone using a mathematical calculation obtained from Inlet and outlet images. The authors hypothesized that a mathematical calculation of screw placement within the ala will improve accuracy of screw placement. A retrospective review of consecutive patients admitted to a level 1 trauma center with pelvic fractures fixed with iliosacral screws from January 2011 to December 2014 was performed...
August 23, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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