Publications by authors named "Obeid I"

Introduction: Global coronal alignment is mainly assessed by C7 plumbline and central sacral vertical line (CSVL), pelvic obliquity and shoulder alignment. A detailed analysis is mandatory when treating spinal deformity. It remains unclear to what extent mild scoliosis influences global coronal alignment.

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Background: Diffuse idiopathic skeletal hyperostosis (DISH) is a systemic condition that might lead to dysphagia because of massive osteophytes that may be present at multiple levels. Confirming the symptomatic level to guide surgical management and avoid extensive surgery is important, however, there is no globally accepted consensus on the topic.

Case Description: We report the case of a 51-year-old man, with no specific past medical history, who has been complaining of a 3-months pain in the left side of the tongue base with sensation of a lump in the throat and dysphagia.

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Purpose: The choice of the best management for Adult Spine Deformity (ASD) is challenging. Health-related quality of life (HRQoL), comorbidities, symptoms and spine geometry, along with surgical risk and potential residual disability play a role, and a definite algorithm for patient management is lacking. Machine learning allows to analyse complex settings more efficiently than other available statistical tools.

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Purpose: To assess the radiological outcomes and complications focusing on distal junctional failure (DJF) of adult spinal deformity patients who underwent thoracolumbar fixation with the use of offset sublaminar hooks (OSH) distally.

Methods: Retrospective review of a prospective, multicenter adult spinal deformity database (2 sites). Inclusion criteria were age of at least 18 years, presence of a spinal deformity with thoraco-lumbar instrumentation ending distally with OSH (pelvis excluded), with minimum 2 years of follow-up.

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Understanding the composition of bone tissue at the submicron level is crucial to elucidate factors contributing to bone disease and fragility. Here, we introduce a novel approach utilizing optical photothermal infrared (O-PTIR) spectroscopy and imaging coupled with machine learning analysis to assess bone tissue composition at 500 nm spatial resolution. This approach was used to evaluate thick bone samples embedded in typical poly(methyl methacrylate) (PMMA) blocks, eliminating the need for cumbersome thin sectioning.

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Article Synopsis
  • * Methods: Researchers developed 10 critical questions from frequently asked AIS inquiries and had the chatbots respond, then evaluated the accuracy, clarity, and empathy of the answers using a rating system by experienced spine surgeons, while also gathering opinions on AI in healthcare.
  • * Results: ChatGPT 4.0 performed the best with 39% 'excellent' ratings, while overall, only 26% of responses were rated 'excellent.' Not
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  • The study aims to determine how rod characteristics, screw density, and cages affect mechanical complications in spinal surgeries compared to patient-related factors and alignment in adult spinal deformity cases.
  • Data from 302 patients was analyzed using different statistical models to measure outcomes like pseudarthrosis and screw loosening and understand the impact of surgical techniques versus patient demographics.
  • Key findings include that using four rods reduces the risk of pseudarthrosis, postoperative malalignment significantly increases the risk of complications, and high screw density leads to a lower risk of screw loosening, while age has a secondary impact on outcomes.
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  • This study analyzed data from multiple centers to explore how machine learning can help in predicting treatment strategies (surgery vs. conservative) for patients with adult spine deformity (ASD).
  • It found that patients whose initial treatment approach matched the machine learning predictions were more likely to reach meaningful clinical improvement, measured by the Minimum Clinically Important Difference (MCID) in various health indices.
  • The results indicated that different patient clusters (based on conditions like scoliosis and sagittal imbalance) showed varying success rates in achieving MCID, emphasizing the importance of accurate treatment predictions in improving patient outcomes.
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  • - The study investigates mechanical complications (MCs) in patients with Adult Spinal Deformity (ASD) who are considered well-aligned post-surgery, revealing that alignment alone does not eliminate the risk of these complications.
  • - A total of 83 patients aged 55 and older were analyzed, with 40% experiencing at least one MC during an average of 4 years of follow-up, including issues like proximal junctional kyphosis and nonunion of surgical rods.
  • - The research utilized a multicenter database to identify and analyze risk factors contributing to MCs through statistical methods like binary logistic regression and ROC curve analysis.
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Study Design: Retrospective analysis of a prospective multicenter Adult Spinal Deformity (ASD) registry.

Objective: Assess whether spinal alignment deteriorates post-surgery in absence of mechanical complications and evaluate the long-term outcomes of ASD surgery over a five-year period.

Summary Of Background Data: ASD is prevalent among older adults, leading to significant pain and disability.

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Pedicle subtraction osteotomy has been thoroughly described and studied over the past 2 decades, being applied mainly in the lumbar spine, followed by the thoracic spine. Our better understanding of alignment biomechanics, and the progressive refinements of the surgical technique over time made it a very efficient procedure for the management of fixed sagittal malalignment. However, a long learning curve is mandatory to mitigate the associated risks particularly neurological deficits and achieve satisfactory clinical and radiological outcomes with an acceptable rate of complications.

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  • Outpatient lumbar decompression surgeries have been effectively performed for over 20 years in France, but there's limited documentation on outpatient instrumented lumbar surgeries and arthroplasties; this study evaluates their feasibility, efficiency, and safety.
  • Conducted between September 2020 and September 2021, the study involved 40 patients aged 18-75 undergoing various lumbar procedures, with a primary goal of assessing successful same-day discharges and monitoring complications and pain management.
  • Results showed a 95% success rate for same-day discharges within twelve hours, no serious complications, and a 100% patient satisfaction rate, highlighting that patient education and early pain management are key to avoiding complications and improving recovery time.
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Purpose: To assess, in a large population of Adult Spinal Deformity (ASD) patients, the true interest of varying the upper anchors as a protective measure against Proximal Junctional Kyphosis (PJK), by analyzing and comparing 2 groups of patients defined according to their proximal construct. Another objective of the study is to look for any other factors, radiological or clinical, that would affect the occurrence of the proximal failure.

Methods: Retrospective review of a prospective ASD database collected from 5 centers.

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Purpose: The Minimal Clinically Important Difference (MCID) is crucial to evaluate management outcomes, but different thresholds have been obtained in different works. Part of this variability is due to measurement error and influence of the database, both essential for calculating the MCID. The aim of this study was to introduce the association of the ROC method in the anchor-based MCID calculation for ODI, SRS-22r, and SF-36, to objectively set the threshold for the anchor-based MCID in an adult spine deformity (ASD) population.

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  • The study investigates the relationship between rod curvature and postoperative outcomes, aiming to provide a validated method for measuring rod curvature using X-rays and a regression algorithm to minimize manual errors.
  • Data from 20 adolescent and 35 adult patients with spine deformities were analyzed, involving the marking of rod points on X-rays and applying a polynomial regression to determine rod curvature equations.
  • Results show high reliability of the new measurement method, with intra-observer intraclass correlation coefficients exceeding 0.85 and excellent inter-observer reliability (0.98) particularly noted in the adolescent idiopathic scoliosis/Scheuermann kyphosis group.
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Background: The long-term impact of reoperations following adult spinal deformity (ASD) surgery is still poorly understood. Our aim was to identify the relationship between unplanned reoperation and health-related quality of life (HRQoL) gain at 2 and 5 years of follow-up.

Methods: We included patients enrolled in a prospective ASD database who underwent surgery ≥5 years prior to the start of the study and who had 2 years of follow-up data.

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Advancements in non-ionizing methods for quantifying spinal deformities are crucial for assessing and monitoring scoliosis. In this study, we analyzed the observer variability of a newly developed digital tool for quantifying body asymmetry from clinical photographs. Prospective observational multicenter study.

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Purpose: Different methods of sagittal alignment assessment compete for predicting adverse events after adult spinal deformity (ASD) surgery. We wanted to study which method provides greater benefit.

Methods: Retrospective study of 391 patients operated for ASD, with > 6 instrumented levels, fused to the pelvis, and 2 years of follow-up.

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Introduction: Poor restoration of pelvic version after adult spinal deformity (ASD) surgery is associated with an increased risk of mechanical complications and worse quality of life. We studied the factors linked to the improvement of postoperative pelvic version.

Materials And Methods: This is a retrospective analysis of a prospective multicenter ASD database.

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Study Design: Retrospective analysis of prospectively collected data.

Objective: To identify the best definition of primary anteverted pelvis in the setting of adult spine deformity (ASD), and to investigate whether this is a pathologic setting that requires surgical correction.

Summary Of Background Data: While pelvic retroversion has been thoroughly investigated, pelvic anteversion (AP) is a far lesser discussed topic.

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Purpose: The purpose of this study was to determine the isolated influence of smoking in patient-reported outcome measures (PROMs) for adult spinal deformity (ASD) surgery excluding known tobacco-related complications.

Methods: Retrospective analysis of a prospective multicenter ASD database. Patients operated on ASD with 2 year post-operative follow-up were included.

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Purpose: To compare the sagittal alignment of patients with diverse mechanical complications (MCs) following adult spinal deformity (ASD) surgery with that of patients without MCs.

Methods: A total of 371 patients who underwent ASD surgery were enrolled. The sagittal spinopelvic parameters were measured preoperatively and at the 6-month and last follow-up, and the global alignment and proportion (GAP) score was calculated.

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Introduction: Surgery to correct spinal deformities in scoliosis involves the use of contoured rods to reshape the spine and correct its curvatures. It is crucial to bend these rods appropriately to achieve the best possible correction. However, there is limited research on how the rod bending process relates to spinal shape in adolescent idiopathic scoliosis surgery.

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