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International Journal of Spine Surgery

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https://www.readbyqxmd.com/read/27909659/reliability-of-the-planned-pedicle-screw-trajectory-versus-the-actual-pedicle-screw-trajectory-using-intra-operative-3d-ct-and-image-guidance
#1
Catherine A Miller, Charles G Ledonio, Matthew A Hunt, Farhan Siddiq, David W Polly
BACKGROUND: Technological advances, including navigation, have been made to improve safety and accuracy of pedicle screw fixation. We evaluated the accuracy of the virtual screw placement (Stealth projection) compared to actual screw placement (intra-operative O-Arm) and examined for differences based on the distance from the reference frame. METHODS: A retrospective evaluation of prospectively collected data was conducted from January 2013 to September 2013. We evaluated thoracic and lumbosacral pedicle screws placed using intraoperative O-arm and Stealth navigation by obtaining virtual screw projections and intraoperative O-arm images after screw placement...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909658/minimally-invasive-surgery-for-lumbar-synovial-cysts-with-coexisting-degenerative-spondylolisthesis
#2
Daniel R Denis, Daniel Hirt, Saumya Shah, Daniel C Lu, Langston T Holly
BACKGROUND: About one third of lumbar synovial cysts are associated with degenerative spondylolisthesis. Segmental instability is thought to contribute to the pathogenesis and recurrence of synovial cysts and lumbar fusion has been advocated as a treatment of choice in the presence of spondylolisthesis. In patients with spondylolisthesis, minimally invasive resection of lumbar synovial cysts, without fusion, could minimize surgically induced segmental instability while providing good pain relief...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909657/remote-cervical-pseudomeningocele-following-anterior-cervical-corpectomy-and-fusion-report-of-a-case-and-review-of-the-literature
#3
Abolfazl Rahimizadeh, Housain Soufiani, Shaghayegh Rahimizadeh
Iatrogenic cervical pseudomeningocele is a rare event and majority are located posteriorly as a delayed complication of inadvertent dural tear after decompressive laminectomy. However, iatrogenic anterior cervical pseudomeningocele subsequent to discectomy or corpectomy is a rare pathology. The time necessary for formation of pseudomeningocele varies and depend on the width of the dural tear and the flow of cerebrospinal fluid leakage. Large tears with high CSF flow usually result in early collection of the cerebrospinal fluid in anterior compartment of the neck designated acute pseudomeningoceles...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909656/outcomes-of-demineralized-bone-matrix-enriched-with-concentrated-bone-marrow-aspirate-in-lumbar-fusion
#4
Remi M Ajiboye, Mark A Eckardt, Jason T Hamamoto, Benjamin Plotkin, Michael D Daubs, Jeffrey C Wang
BACKGROUND: Multiple studies have demonstrated that a significant amount of variability exists in various demineralized bone matrix (DBM) formulations, which casts doubts on its reliability in consistently promoting fusion. Bone marrow aspirate (BMA) is a cellular based graft that contains mesenchymal stem cells (MSCs) and growth factors can confer osteogenic and osteoinductive potential to DBM. The goal of this study was to describe the outcome of DBM enriched with concentrated BMA in patients undergoing combined lumbar interbody and posterolateral fusion...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909655/adjacent-disc-height-reduction-and-clinical-outcome-after-intradiscal-cement-leakage
#5
Minjie Shen, Junjie Niu, Haifei Zhou, Qian Meng, Minfeng Gan, Huilin Yang
OBJECTIVE: The purpose of this study is to evaluate the effect of intradiscal cement leakage on the height of adjacent cement-containing discs and the resulting clinical efficacy after kyphoplasty. METHODS: A total of 124 patients were included and classified into two groups: group A included 20 patients with intradiscal leakage, and group B contained 104 patients without intradiscal leakage. The mean follow-up time was 20.56±3.51 months. The height of the corresponding discs in both groups was measured using Farfan's method...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909654/bone-substitutes-and-expanders-in-spine-surgery-a-review-of-their-fusion-efficacies
#6
Abhijeet Kadam, Paul W Millhouse, Christopher K Kepler, Kris E Radcliff, Michael G Fehlings, Michael E Janssen, Rick C Sasso, James J Benedict, Alexander R Vaccaro
STUDY DESIGN: A narrative review of literature. OBJECTIVE: This manuscript intends to provide a review of clinically relevant bone substitutes and bone expanders for spinal surgery in terms of efficacy and associated clinical outcomes, as reported in contemporary spine literature. SUMMARY OF BACKGROUND DATA: Ever since the introduction of allograft as a substitute for autologous bone in spinal surgery, a sea of literature has surfaced, evaluating both established and newly emerging fusion alternatives...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909653/magnetic-resonance-imaging-of-the-cervical-spine-under-represents-sagittal-plane-deformity-in-degenerative-myelopathy-patients
#7
Douglas S Weinberg, Arunit J Chugh, Jeremy J Gebhart, Jason D Eubanks
BACKGROUND: In treating patients with cervical myelopathy, surgical approach may be dictated by sagittal balance, highlighting the need for accurate pre-operative assessment. Magnetic Resonance Imaging (MRI) is widely-recognized for its utility in the diagnosis and surgical planning of cervical myelopathy. Plain radiographs (X-rays) are a reliable tool to assess bony alignment. However, they may not always be included in standard pre-operative evaluation, especially in an era of restricted payer-environments...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909652/percutaneous-transpedicular-lumbar-endoscopy-a-case-report
#8
Priyank Uniyal, Gun Choi, Bhushan Khedkkar
INTRODUCTION: Since Kambin introduced the concept of percutaneous transforaminal disc surgery in 1973, there has been numerous advances in the field of spine endoscopy and the concept of central debulking of the disc has changed to targeted fragmentectomy and disc preservation. The lumbar disc fragments which are down migrated and to the medial aspect of the pedicle are extremely challenging to deal by transforaminal approach even after foraminoplasties and by various other approaches...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909651/hybrid-decompression-and-fixation-technique-for-the-treatment-of-multisegmental-cervical-spondylotic-myelopathy
#9
Barón Zárate-Kalfopulos, Walter Araos-Silva, Alejandro Reyes-Sánchez, Luis Miguel Rosales-Olivarez, Armando Alpizar-Aguirre, Francisco Lopez Melendez
BACKGROUND: Cervical spondilotic myelopathy (CSM) is defined as the compromise of the spinal cord due to degenerative changes of the cervical spine. It is the most common cause of spinal cord dysfunction in patients over 55 years. An early surgical management it is paramount to achieve better neurological outcome. There is still controversy regarding the appropriate surgical treatment for multisegmental CSM involving three or more levels. The hybrid decompression and fixation technique combines one or two level corpectomy and a single level discectomy in order to obtain optimum decompression and fixation in patients with multilevel cervical myelopathy...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27652200/sagittal-balance-correction-in-lateral-interbody-fusion-for-degenerative-scoliosis
#10
Daniel J Blizzard, Michael A Gallizzi, Charles Sheets, Benjamin T Smith, Robert E Isaacs, Megan Eure, Christopher R Brown
BACKGROUND: Sagittal balance restoration has been shown to be an important determinant of outcomes in corrective surgery for degenerative scoliosis. Lateral interbody fusion (LIF) is a less-invasive technique which permits the placement of a high lordosis interbody cage without risks associated with traditional anterior or transforaminal interbody techniques. Studies have shown improvement in lumbar lordosis following LIF, but only one other study has assessed sagittal balance in this population...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27652199/two-year-outcomes-from-a-randomized-controlled-trial-of-minimally-invasive-sacroiliac-joint-fusion-vs-non-surgical-management-for-sacroiliac-joint-dysfunction
#11
David W Polly, John Swofford, Peter G Whang, Clay J Frank, John A Glaser, Robert P Limoni, Daniel J Cher, Kathryn D Wine, Jonathan N Sembrano
BACKGROUND: Sacroiliac joint (SIJ) dysfunction is an important and underappreciated cause of chronic low back pain. OBJECTIVE: To prospectively and concurrently compare outcomes after surgical and non-surgical treatment for chronic SIJ dysfunction. METHODS: One hundred and forty-eight subjects with SIJ dysfunction were randomly assigned to minimally invasive SIJ fusion with triangular titanium implants (SIJF, n = 102) or non-surgical management (NSM, n = 46)...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27652198/pre-operative-autologous-blood-donation-does-not-affect-pre-incision-hematocrit-in-adolescent-idiopathic-scoliosis-patients-a-retrospective-cohort-of-a-prospective-randomized-trial
#12
Anthony J Boniello, Kushagra Verma, Austin Peters, Baron S Lonner, Thomas Errico
BACKGROUND: Pre-donation of autologous blood prior to spine fusion for adolescent idiopathic scoliosis (AIS) has been used in deformity surgery. The effect of pre-donation on pre-operative hematocrit (Hct) remains debated. Multiple factors may influence pre-operative Hct including intravascular volume status, patient factors, and timing of pre-operative blood donation. The purpose of this study was to determine if pre-donation significantly lowers pre-incision Hct in AIS patients. METHODS: A retrospective cohort study of a Level-1 prospective randomized trial was conducted...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27652197/isass-policy-2016-update-minimally-invasive-sacroiliac-joint-fusion
#13
Morgan P Lorio
The index 2014 ISASS Policy Statement - Minimally Invasive Sacroiliac Joint Fusion was generated out of necessity to provide an ICD9-based background and emphasize tools to ensure correct diagnosis. A timely ICD10-based 2016 Update provides a granular threshold selection with improved level of evidence and a more robust, relevant database.
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27652196/a-case-report-of-extramedullary-haematopoeisis-in-lumbosacral-region-presenting-as-cauda-equina-syndrome
#14
Shardul Soman, G D Tharadara, Naitik Chhatrala, Shubham Jain
INTRODUCTION: Extramedullary hematopoeisis (EMH) is defined as formation of blood cells outside the bone marrow. It occurs most commonly in the liver and spleen in patients having disorders that lead to chronic anaemia. EMH in spinal canal is a very rare site and cauda equina syndrome due to EMH has very few cases presented in literature. CASE PRESENTATION: A 28 year old male patient presented with complain of incontinenance of bladder and bowel along with saddle anaesthesia from 10 days...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27441182/cervical-disc-arthroplasty-with-prestige-lp-disc-versus-anterior-cervical-discectomy-and-fusion-seven-year-outcomes
#15
Matthew F Gornet, J Kenneth Burkus, Mark E Shaffrey, Hui Nian, Frank E Harrell
BACKGROUND: Cervical disc arthroplasty (CDA) has emerged as an alternative to anterior cervical discectomy and fusion (ACDF) for the treatment of cervical pathologies. Studies are on-going to assess the long term outcomes of CDA. This study assessed the safety and efficacy of the Prestige(®) LP Disc at 84-months follow up. METHODS: Prospective data from 280 CDA patients with single-level cervical disc disease with radiculopathy or myelopathy were compared with 265 historical control ACDF patients...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27441181/a-comparison-of-open-and-percutaneous-techniques-in-the-operative-fixation-of-spinal-fractures-associated-with-ankylosing-spinal-disorders
#16
Cara L Sedney, Scott D Daffner, Abimbola Obafemi-Afolabi, Daniel Gelb, Steven Ludwig, Sanford E Emery, John C France
BACKGROUND: The operative care of patients with ankylosing spinal conditions such as ankylosing spondylitis (AS) and diffuse idiopathic skeletal hyperostosis (DISH) after a spine fracture is not well represented in the literature. This work seeks to determine the effect of minimally invasive techniques on patients with spinal fractures and ankylosing spinal conditions through a retrospective case-control analysis. METHODS: The operative logs from 1996-2013 of seven fellowship-trained spine surgeons from two academic, Level I trauma centers were reviewed for cases of operatively treated thoracic and lumbar spinal fractures in patients with ankylosing spinal disorders...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27441180/clinical-values-of-control-over-pain-and-pain-coping-strategies-in-surgical-treatment-for-patients-with-lumbar-spinal-stenosis
#17
Daisuke Higuchi
BACKGROUND: Control over pain and pain coping strategies are associated with pain intensity as well as psychological status and subjective disability in patients experiencing pain. The present study assessed the clinical values of control over pain and pain coping strategies in surgical treatment for patients with lumbar spinal stenosis using mediation analysis. METHODS: Sixty-two patients with lumbar spinal stenosis (median age, 70 years; 34 men, 28 women) were evaluated before surgery...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27441179/the-reverse-thomas-position-for-thoracolumbar-fracture-height-restoration-relative-contribution-of-patient-positioning-in-percutaneous-balloon-kyphoplasty-for-acute-vertebral-compressions
#18
Jonathan P Ng, Derek T Cawley, Suzanne M Beecher, Joseph F Baker, John P McCabe
BACKGROUND: Standard positioning for percutaneous balloon kyphoplasty requires placing a patient prone with supports under the iliac crests and upper thorax. The authors believe that hip hyperextension maximises pelvic anteversion creating anterior longitudinal ligamentotaxis, thus facilitating restoration of vertebral height. METHODS: Radiographic imaging including pre-operative, post-positioning, post balloon tamp inflation and post-operative lateral radiographs were analysed for anterior and posterior column height, wedge angle of the affected vertebra and 3-level Cobb angle in patients with recent fractures of T11-L1...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27441178/variability-in-flexion-extension-radiographs-of-the-lumbar-spine-a-comparison-of-uncontrolled-and-controlled-bending
#19
Boyle Cheng, Anthony E Castellvi, Reginald J Davis, David C Lee, Morgan P Lorio, Richard E Prostko, Chip Wade
BACKGROUND: While low back pain is one of the most prevalent, if not the most prevalent reasons for visits to physicians, a majority of patients with low back pain cannot be given a definitive diagnosis. While there have been substantial advances in imaging technologies over the past 30 years, relatively little has changed in the methodologies for evaluating functionality of the lumbar spine. The current standard of care for function assessment of the lumbar spine focuses on uncontrolled patient directed motion which results in increased inter-patient variability...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27441177/impact-of-a-bundled-payment-system-on-resource-utilization-during-spine-surgery
#20
James M Mok, Maximilian Martinez, Harvey E Smith, Daniel M Sciubba, Peter G Passias, Andrew Schoenfeld, Robert E Isaacs, Alexander R Vaccaro, Kris E Radcliff
BACKGROUND: In a bundled payment system, a single payment covers all costs associated with a single episode of care. Spine surgery may be well suited for bundled payments because of clearly defined episodes of care, but the impact on current practice has not been studied. We sought to examine how a theoretical bundled payment strategy with financial disincentives to resource utilization would impact practice patterns. METHODS: A multiple-choice survey was administered to spine surgeons describing eight clinical scenarios...
2016: International Journal of Spine Surgery
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