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Spine osteotomy

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https://www.readbyqxmd.com/read/28927210/navigation-and-image-injection-for-control-of-bone-removal-and-osteotomy-planes-in-spine-surgery
#1
Michael Kosterhon, Angelika Gutenberg, Sven Rainer Kantelhardt, Elefterios Archavlis, Alf Giese
BACKGROUND AND IMPORTANCE: In contrast to cranial interventions, neuronavigation in spinal surgery is used in few applications, not tapping into its full technological potential. We have developed a method to preoperatively create virtual resection planes and volumes for spinal osteotomies and export 3-D operation plans to a navigation system controlling intraoperative visualization using a surgical microscope's head-up display. The method was developed using a Sawbone ® model of the lumbar spine, demonstrating feasibility with high precision...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28910701/biomechanical-analysis-of-lumbar-decompression-surgery-in-relation-to-degenerative-changes-in-the-lumbar-spine-validated-finite-element-analysis
#2
Quan You Li, Ho-Joong Kim, Juhyun Son, Kyoung-Tak Kang, Bong-Soon Chang, Choon-Ki Lee, Hyun Sik Seok, Jin S Yeom
BACKGROUND: There are no studies about the biomechanical analysis of lumbar decompression surgery in relation to degenerative changes of the lumbar spine. Therefore, the purpose of this study was to compare, by using finite element (FE) analysis, the biomechanical changes of the lumbar spine in terms of annulus stress and nucleus pressure after two different kinds of lumbar decompression surgery in relation to disc degenerative changes. METHODS: The validated intact and degenerated FE models (L2-5) were used in this study...
September 6, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28894684/a-preliminary-algorithm-using-spine-measurement-software-to-predict-sagittal-alignment-following-pedicle-subtraction-osteotomy
#3
Robert K Merrill, Jun S Kim, Dante M Leven, Joshua J Meaike, Joung Heon Kim, Samuel K Cho
STUDY DESIGN: Retrospective case series. OBJECTIVE: To evaluate if spine measurement software can simulate sagittal alignment following pedicle subtraction osteotomy (PSO). METHODS: We retrospectively reviewed consecutive adult spinal deformity patients who underwent lumbar PSO. Sagittal measurements were performed on preoperative lateral, standing radiographs. Sagittal measurements after simulated PSO were compared to actual postoperative measurements...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28885298/increasing-body-mass-index-is-associated-with-worse-perioperative-outcomes-and-higher-costs-in-adult-spinal-deformity-surgery
#4
Raj M Amin, Micheal Raad, Amit Jain, Kevin P Sandhu, Steven M Frank, Khaled M Kebaish
STUDY DESIGN: Retrospective review. OBJECTIVE: To investigate associations of obesity with outcomes and costs of adult spinal deformity (ASD) surgery. SUMMARY OF BACKGROUND DATA: Increasing body mass index is a risk factor for complications after nondeformity spine surgery, but its effect on ASD surgery is unknown. METHODS: We reviewed records of 244 ASD patients who underwent spinal arthrodesis of ≥5 levels from 2010-2014 and categorized them by World Health Organization body mass index (BMI) groups: < 30, nonobese (64%); 30-34...
September 6, 2017: Spine
https://www.readbyqxmd.com/read/28872530/modified-en-bloc-spondylectomy-for-tumors-of-the-thoracic-and-lumbar-spine-surgical-technique-and-outcomes
#5
Akash A Shah, Nuno R Paulino Pereira, Frank X Pedlow, John C Wain, Sam S Yoon, Francis J Hornicek, Joseph H Schwab
BACKGROUND: Total en bloc spondylectomy (TES) for the treatment of spinal tumors decreases local recurrence and improves survival compared with intralesional resection. TES approaches vary in both the number of stages to complete the procedure and instruments with which osteotomies are performed. METHODS: We describe a 2-stage technique that employs the use of threadwire saws. We performed a retrospective review of cases of primary tumors and solitary metastases involving the thoracic or lumbar spine treated with use of our modified technique at our institution between 2010 and 2016, identifying eligible patients by searching for specific phrases in operative reports found in our oncologic database...
September 6, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28855714/the-pterygomaxillary-junction-an-imaging-study-for-surgical-information-of-lefort-i-osteotomy
#6
Yen-Po Chin, Maria Belen Leno, Sarayuth Dumrongwongsiri, Kyung Hoon Chung, Hsiu-Hsia Lin, Lun-Jou Lo
Maxillary osteotomy is a common surgical procedure and often involves separation of the pterygomaxillary junction (PMJ), which is a "blinded" procedure with inherent risks. Knowledge of the PMJ structure is essential. It remains unclear whether patients with different facial types have different PMJ structures, or different surgical outcome. This study evaluated the computed tomographic images of 283 consecutive patients who received orthognathic surgery. Patients were classified into Angle class I, II, III and cleft lip/palate groups...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28841106/a-novel-index-for-quantifying-the-risk-of-early-complications-for-patients-undergoing-cervical-spine-surgeries
#7
Peter G Passias, Bassel G Diebo, Bryan J Marascalchi, Cyrus M Jalai, Samantha R Horn, Peter L Zhou, Karen Paltoo, Olivia J Bono, Nancy Worley, Gregory W Poorman, Vincent Challier, Anant Dixit, Carl Paulino, Virginie Lafage
OBJECTIVE It is becoming increasingly necessary for surgeons to provide evidence supporting cost-effectiveness of surgical treatment for cervical spine pathology. Anticipating surgical risk is critical in accurately evaluating the risk/benefit balance of such treatment. Determining the risk and cost-effectiveness of surgery, complications, revision procedures, and mortality rates are the most significant limitations. The purpose of this study was to determine independent risk factors for medical complications (MCs), surgical complications (SCs), revisions, and mortality rates following surgery for patients with cervical spine pathology...
August 25, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28840342/vertebral-subluxation-during-three-column-osteotomy-in-surgical-correction-of-adult-spine-deformity-incidence-risk-factors-and-complications
#8
Jun Qiao, Lingyan Xiao, Xu Sun, Benlong Shi, Zhen Liu, Leilei Xu, Zezhang Zhu, Bangping Qian, Yong Qiu
PURPOSE: To investigate incidence, risk factors, and complications of vertebral subluxation (VS) during three-column osteotomy in surgical correction of adult spine deformity. METHODS: Adult spine deformity patients who underwent three-column osteotomies including VCR, PSO, and other modified types from March 2000 to December 2014 in our center were retrospectively reviewed. The following parameters were measured pre- and postoperatively: Cobb angle of main curve, global kyphosis, sagittal vertical axis, and kyphosis flexibility...
August 24, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28836012/a-cost-effectiveness-comparisons-of-adult-spinal-deformity-surgery-in-the-united-states-and-japan
#9
Mitsuru Yagi, Christopher P Ames, Malla Keefe, Naobumi Hosogane, Justin S Smith, Christopher I Shaffrey, Frank Schwab, Virginie Lafage, R Shay Bess, Morio Matsumoto, Kota Watanabe
PURPOSE: Information about the cost-effectiveness of surgical procedures for adult spinal deformity (ASD) is critical for providing appropriate treatments for these patients. The purposes of this study were to compare the direct cost and cost-effectiveness of surgery for ASD in the United States (US) and Japan (JP). METHODS: Retrospective analysis of 76 US and 76 JP patients receiving surgery for ASD with ≥2-year follow-up was identified. Data analysis included preoperative and postoperative demographic, radiographic, health-related quality of life (HRQOL), and direct cost for surgery...
August 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28827503/increased-anterior-column-exposure-using-the-anterior-intrapelvic-approach-combined-with-an-anterior-superior-iliac-spine-asis-osteotomy-a-cadaveric-study
#10
Andrew J Sheean, Richard K Hurley, Cory A Collinge, Michael J Beltran
OBJECTIVE: To determine if the addition of an anterior superior iliac spine (ASIS) osteotomy to the lateral window, when combined with the anterior intrapelvic (AIP) surgical approach, would improve visualization of the iliopectineal eminence and allow for predictable and safe clamp application. METHODS: Ten lateral window approaches to the iliac fossa were developed in conjunction with the AIP approach on 10 fresh-frozen cadaveric pelvi. A calibrated digital image was taken from the surgeon's optimal viewing angle in order to capture the visualized osseous surface of the false pelvis with emphasis on the iliopectineal eminence...
August 12, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28796721/mechanisms-predisposing-factors-and-prognosis-of-intraoperative-vertebral-subluxation-during-pedicle-subtraction-osteotomy-in-surgical-correction-of-thoracolumbar-kyphosis-secondary-to-ankylosing-spondylitis
#11
Bang-Ping Qian, Sai-Hu Mao, Jun Jiang, Bin Wang, Yong Qiu
STUDY DESIGN: A retrospective study. OBJECTIVE: To analyze the mechanisms, predisposing factors, and prognosis of the intraoperative vertebral subluxation (VS) during pedicle subtraction osteotomy (PSO) for thoracolumbar kyphosis secondary to ankylosing spondylitis (AS). SUMMARY OF BACKGROUND DATA: VS is one of the most daunting challenges that surgeons encounter during PSO closure, especially in patients with AS with ankylosed and mostly osteoporotic spine...
August 15, 2017: Spine
https://www.readbyqxmd.com/read/28791817/binder-syndrome-clinical-findings-and-surgical-treatment-of-18-patients-at-the-department-of-plastic-surgery-in-polanica-zdr%C3%A3-j
#12
Piotr H Drozdowski, Ireneusz Łątkowski, Mateusz G Zachara, Piotr Wójcicki
BACKGROUND: Binder syndrome (BS) is an uncommon congenital underdevelopment of the maxilla and nasal skeleton. Other clinical features include a hypoplastic or absent anterior nasal spine; a short, flat nose with short columella; an acute nasolabial angle; a convex upper lip and class III malocclusion. OBJECTIVES: The aim of the study was to outline the major characteristics of BS and to present a variety of surgical treatment methods. MATERIAL AND METHODS: The study included 18 patients treated in the authors' department from 1989 to 2013...
May 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28777277/comparison-of-ponte-osteotomies-and-3-column-osteotomies-in-the-treatment-of-congenital-spinal-deformity
#13
Priscella Chan, Lindsay M Andras, Ena Nielsen, Ted Sousa, Elizabeth Joiner, Paul D Choi, Vernon T Tolo, David L Skaggs
BACKGROUND: Congenital spinal deformity (CSD) has traditionally been treated with 3-column osteotomies [hemivertebrectomy (HV) or vertebral column resection (VCR)] to address rigid deformities. Alternatively, multiple Ponte osteotomies (PO) may provide correction while minimizing risk. The purpose of this study was to compare safety and outcomes of patients undergoing surgical treatment for CSD with these 3 procedures. METHODS: Retrospective review of CSD patients treated with posterior spinal fusion between 1996 to 2013...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28770402/kinematic-efficacy-of-supplemental-anterior-lumbar-interbody-fusion-at-lumbosacral-levels-in-thoracolumbosacral-deformity-correction-with-and-without-pedicle-subtraction-osteotomy-at-l3-an-in-vitro-cadaveric-study
#14
Benny T Dahl, Jonathan A Harris, Manasa Gudipally, Mark Moldavsky, Saif Khalil, Brandon S Bucklen
PURPOSE: Pedicle subtraction osteotomy (PSO) is performed to treat rigid, sagittal spinal deformities, but high rates of implant failure are reported. Anterior lumbar interbody fusion has been proposed to reduce this risk, but biomechanical investigation is lacking. The goal of this study was to quantify the (1) destabilizing effects of a lumbar osteotomy and (2) contribution of anterior lumbar interbody fusion (ALIF) at the lumbosacral junction as recommended in literature. METHODS: Fourteen fresh human thoracolumbosacral spines (T12-S1) were tested in flexion-extension (FE), lateral bending (LB), and axial rotation (AR)...
August 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28760028/correction-of-severe-spinopelvic-mismatch-decreased-blood-loss-with-lateral-hyperlordotic-interbody-grafts-as-compared-with-pedicle-subtraction-osteotomy
#15
Jean-Christophe Leveque, Vijay Yanamadala, Quinlan D Buchlak, Rajiv K Sethi
OBJECTIVE Pedicle subtraction osteotomy (PSO) provides extensive correction in patients with fixed sagittal plane imbalance but is associated with high estimated blood loss (EBL). Anterior column realignment (ACR) with lateral graft placement and sectioning of the anterior longitudinal ligament allows restoration of lumbar lordosis (LL). The authors compare peri- and postoperative measures in 2 groups of patients undergoing correction of a sagittal plane imbalance, either through PSO or the use of lateral lumbar fusion and ACR with hyperlordotic (20°-30°) interbody cages, with stabilization through standard posterior instrumentation in all cases...
August 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28752243/design-of-mulitlevel-olf-approach-v-shaped-decompressive-laminoplasty-based-on-3d-printing-technology
#16
Qinjie Ling, Erxing He, Hanbin Ouyang, Jing Guo, Zhixun Yin, Wenhua Huang
PURPOSE: To introduce a new surgical approach to the multilevel ossification of the ligamentum flavum (OLF) aided by three-dimensional (3D) printing technology. METHODS: A multilevel OLF patient (male, 66 years) was scanned using computed tomography (CT). His saved DICOM format data were inputted to the Mimics14.0 3D reconstruction software (Materialise, Belgium). The resulting 3D model was used to observe the anatomical features of the multilevel OLF area and to design the surgical approach...
July 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28746128/does-the-position-of-the-aorta-change-with-the-altered-body-position-in-ankylosing-spondylitis-patients-with-thoracolumbar-kyphosis-a-magnetic-resonance-imaging-investigation
#17
Zhe Qu, Qian Bang-Ping, Yong Qiu, Ben-Long Shi, Ming-Liang Ji, Bin Wang, Yang Yu, Ze-Zhang Zhu
STUDY DESIGN: A prospective magnetic resonance imaging study. OBJECTIVE: To quantitatively explore the differences in the anatomic position of the aorta relative to the spine between supine and prone positions in ankylosing spondylitis (AS) patients with thoracolumbar kyphosis. SUMMARY OF BACKGROUND DATA: Aortic complications may occur during the lumbar spine osteotomy in correcting thoracolumbar kyphosis secondary to AS, and a clear understanding of the spatial relationship between the aorta and the vertebrae is essential to prevent these iatrogenic complications...
August 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28741218/asymmetric-pedicle-subtractionosteotomy-apso-guided-by-a-3d-printed-model-to-correct-a-combined-fixed-sagittal-and-coronal-imbalance
#18
Pierre-Pascal Girod, S Hartmann, P Kavakebi, J Obernauer, M Verius, C Thomé
Surgical correction of fixed thoracolumbar deformity is usually achieved by estimating the preoperatively planned correction angles during surgery and is therefore prone to inaccuracy. This is particularly problematic in biplanar deformities. To overcome these difficulties, 3D model for planning, preparation, and simulation of an asymmetric pedicle subtraction osteotomy (aPSO) was printed and used to realign coronal and sagittal balance in case of rigid degenerative kyphoscoliosis. A 59-year-old woman presented with severe back pain and spinal claudication and was diagnosed with a rigid kyphoscoliosis with multilevel spinal stenosis...
July 24, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28732535/case-report-rare-skeletal-manifestations-in-a-child-with-primary-hyperparathyroidism
#19
Maulee Hiromi Arambewela, Kamani Danushka Liyanarachchi, Noel P Somasundaram, Aruna S Pallewatte, Gamini L Punchihewa
BACKGROUND: Primary hyperparathyroidism (PHPT) is uncommon among children with an incidence of 1:300,000. This diagnosis is often missed in children in contrast to adults where it is detected at a pre symptomatic stage due to routine blood investigations. Etiology of PHPT can be due to adenoma, hyperplasia or rarely carcinoma. CASE PRESENTATION: A 12 year old Sri Lankan girl presented with progressive difficulty in walking since 1 year. On examination she had bilateral genu valgum...
July 21, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28688061/new-method-for-correction-of-lumbo-sacral-kyphosis-deformity-in-patient-with-high-pelvic-incidence
#20
Marcin Czyz, Stephen Forster, James Holton, Babak Shariati, David J Clarkson, Bronek M Boszczyk
STUDY DESIGN: Technical note. OBJECTIVE: We describe a novel technique of bilateral longitudinal sacral osteotomy allowing direct reduction of high pelvic incidence (PI) and correction of sagittal imbalance. METHODS: A 25-year-old female patient presented with a disabling lumbo-sacral kyphosis fused in situ through previous operations with residual low-grade wound infection and grade IV L5/S1 spondylolisthesis with severity index (SI) of 65%...
August 2017: European Spine Journal
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