Dean Chou
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View article: Association Between Nutritional Status and Survival in Patients Requiring Treatment for Spinal Metastases
Association Between Nutritional Status and Survival in Patients Requiring Treatment for Spinal Metastases Open
BACKGROUND AND OBJECTIVES: The Patient-Generated Subjective Global Assessment (PG-SGA) is a standardized tool for assessing malnutrition in patients with cancer. The primary aim of this study was to assess the impact of preoperative nutrit…
A Mathematics-Oriented AI Iterative Prediction Framework Combining XGBoost and NARX: Application to the Remaining Useful Life and Availability of UAV BLDC Motors Open
This paper presents a mathematics-focused AI iterative prediction framework that combines Extreme Gradient Boosting (XGBoost) for nonlinear function approximation with nonlinear autoregressive model with exogenous inputs (NARXs) for time-s…
A single-stage three-rod system for sequential reduction of traumatic thoracic spondyloptosis: illustrative case Open
BACKGROUND Spondyloptosis is defined as more than 100% subluxation of adjacent vertebral bodies. Timely reduction and stabilization are important to promote rehabilitation and improve quality of life. OBSERVATIONS A 32-year-old male sustai…
Exploring Key Factors Influencing ESG Commitment: Evidence from Taiwanese Listed Companies Open
This study addresses critical Environmental, Social, and Governance (ESG) research gaps in Asia by developing a validated and holistic framework tailored to Taiwanese listed companies. Integrating the Resource-Based View (RBV), Institution…
View article: Defining cervical spondylotic myelopathy surgical endotypes using comorbidity clustering: a Quality Outcomes Database cervical spondylotic myelopathy study
Defining cervical spondylotic myelopathy surgical endotypes using comorbidity clustering: a Quality Outcomes Database cervical spondylotic myelopathy study Open
OBJECTIVE Coexisting medical conditions are increasingly prevalent in surgical populations. The impact of multiple comorbidities on patient-reported outcomes (PROs) and endotypes of frequently co-occurring conditions for cervical spondylot…
View article: Evaluation of Adverse Events and the Impact on Health-Related Outcomes in Patients Undergoing Surgery for Metastatic Spine Tumors: Analysis of the Metastatic Tumor Research and Outcomes Network (MTRON) Registry Dataset
Evaluation of Adverse Events and the Impact on Health-Related Outcomes in Patients Undergoing Surgery for Metastatic Spine Tumors: Analysis of the Metastatic Tumor Research and Outcomes Network (MTRON) Registry Dataset Open
Study Design This study is part of the AO Spine Metastatic Tumor Research and Outcomes Network [MTRON], an international multicenter prospective observational registry including patients with spinal metastases. Objectives This study aims t…
View article: Impact of thoracolumbar inflection point on outcomes and complications in adult spinal deformity
Impact of thoracolumbar inflection point on outcomes and complications in adult spinal deformity Open
OBJECTIVE Existing literature on the impact of alignment parameters relative to the thoracolumbar inflection point remains sparse. The authors aimed to investigate the influence of the inflection point, lumbar lordosis apex (LLA), and othe…
Minimally invasive transforaminal lumbar interbody fusion for scoliosis: surgical technique for focal treatment of the lumbosacral fractional curve Open
Minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) can be utilized in the treatment of both adult spinal deformity and lumbar degenerative disease. This video focuses on the surgical technique and outcomes of MIS-TLIF aim…
View article: Surgical Adverse Events for Primary Tumors of the Spine and Their Impact on Outcomes: An Observational Study From the Primary Tumors Research and Outcomes Network
Surgical Adverse Events for Primary Tumors of the Spine and Their Impact on Outcomes: An Observational Study From the Primary Tumors Research and Outcomes Network Open
BACKGROUND AND OBJECTIVES: Aggressive resection for primary tumors of the spine are associated with a high rate of adverse events (AEs), but the impact of AEs on patient-reported outcomes (PROs) remains unknown and is critical to the share…
Quantitative Analysis of Relationship Between Paraspinal Muscle Degeneration and Degree of Degenerative Lumbar Spondylolisthesis Open
Study Design. Clinical retrospective study. Objective. The authors aim to analyze the relationship between paraspinal muscle degeneration and degree of L4–5 Degenerative lumbar spondylolisthesis (DLS). Summary of Background Data. While par…
View article: Defining Spine Cancer Pain Syndromes: A Systematic Review and Proposed Terminology
Defining Spine Cancer Pain Syndromes: A Systematic Review and Proposed Terminology Open
Study Design Systematic Review. Objectives Formalized terminology for pain experienced by spine cancer patients is lacking. The common descriptors of spine cancer pain as mechanical or non-mechanical is not exhaustive. Misdiagnosed spinal …
View article: What is the Optimal Management of Metastatic Spine Patients With Intermediate Spinal Instability Neoplastic Scores: To Operate or Not to Operate?
What is the Optimal Management of Metastatic Spine Patients With Intermediate Spinal Instability Neoplastic Scores: To Operate or Not to Operate? Open
Study Design Systematic review. Objective In patients with extradural metastatic spine disease, we sought to systematically review the outcomes and complications of patients with intermediate Spinal Instability Neoplastic Score (SINS) lesi…
View article: How Reliable is the Assessment of Fusion Status Following ACDF Using Dynamic Flexion-Extension Radiographs?
How Reliable is the Assessment of Fusion Status Following ACDF Using Dynamic Flexion-Extension Radiographs? Open
Study Design Reliability study. Objectives The radiographic diagnosis of non-union is not standardized. Prior authors have suggested using a cutoff of .9. The ICC from these high performing reviewers was .94 (.9; .97), SEM was .45 mm, and …
View article: SPCM-04 SURGICAL EXCISION OF SPINAL INTRADURAL METASTASES: A 10 YEAR INSTITUTIONAL EXPERIENCE
SPCM-04 SURGICAL EXCISION OF SPINAL INTRADURAL METASTASES: A 10 YEAR INSTITUTIONAL EXPERIENCE Open
INTRODUCTION) Spinal intradural metastases are rare and are usually managed non-operatively given poor prognosis of widespread metastatic disease. Surgical resection is considered in cases of rapid, progressive neurological decline. We des…
View article: A Clinical Practice Guideline for Prevention, Diagnosis and Management of Intraoperative Spinal Cord Injury: Recommendations for Use of Intraoperative Neuromonitoring and for the Use of Preoperative and Intraoperative Protocols for Patients Undergoing Spine Surgery
A Clinical Practice Guideline for Prevention, Diagnosis and Management of Intraoperative Spinal Cord Injury: Recommendations for Use of Intraoperative Neuromonitoring and for the Use of Preoperative and Intraoperative Protocols for Patients Undergoing Spine Surgery Open
Study Design Development of a clinical practice guideline following the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) process. Objective The objectives of this study were to develop guidelines that outline the …
Microvascular decompression of a vertebral artery loop causing cervical radiculopathy: illustrative case Open
BACKGROUND Vertebral artery loops are a rare cause of cervical radiculopathy. Surgical options for nerve root decompression include an anterior or posterior approach, with or without additional microvascular decompression. OBSERVATIONS The…
View article: Gender and Sex Differences in Health-related Quality of Life, Clinical Outcomes and Survival after Treatment of Metastatic Spine Disease
Gender and Sex Differences in Health-related Quality of Life, Clinical Outcomes and Survival after Treatment of Metastatic Spine Disease Open
Study Design. Retrospective review of prospective, multicenter and international cohort study. Objective. To describe the effect of gender on HRQoL, clinical outcomes and survival for patients with spinal metastases treated with either sur…
View article: Cost Benefit of Implementation of Risk Stratification Models for Adult Spinal Deformity Surgery
Cost Benefit of Implementation of Risk Stratification Models for Adult Spinal Deformity Surgery Open
Study Design/Setting Retrospective cohort study. Objective Assess the extent to which defined risk factors of adverse events are drivers of cost-utility in spinal deformity (ASD) surgery. Methods ASD patients with 2-year (2Y) data were inc…
View article: Multilevel Laminoplasty for CSM: Is C3 Laminectomy Better Than C3 Laminoplasty at the Superior Vertebra?
Multilevel Laminoplasty for CSM: Is C3 Laminectomy Better Than C3 Laminoplasty at the Superior Vertebra? Open
Introduction: In a multilevel cervical laminoplasty operation for patients with cervical spondylotic myelopathy (CSM), a partial or complete C3 laminectomy may be performed at the upper level instead of a C3 plated laminoplasty. It is unkn…
Study on articular surface morphology of atlantoaxial lateral mass based on differential manifold Open
Objectives To propose a surface reconstruction algorithm based on a differential manifold (a space with local Euclidean space properties), which can be used for processing of clinical images and for modeling of the atlantoaxial joint. To d…
View article: Greater improvement in Neck Disability Index scores in women after surgery for cervical myelopathy: an analysis of the Quality Outcomes Database
Greater improvement in Neck Disability Index scores in women after surgery for cervical myelopathy: an analysis of the Quality Outcomes Database Open
OBJECTIVE There is a high prevalence of cervical myelopathy that requires surgery; as such, it is important to identify how different groups benefit from surgery. The American Association of Neurological Surgeons launched the Quality Outco…
Systematic review and meta-analysis of topical tranexamic acid in spine surgery Open
OBJECTIVE Tranexamic acid (TXA) is an antifibrinolytic drug associated with reduced blood loss in a range of surgical specialties, including neurosurgery, orthopedic surgery, and cardiac surgery. Concerns about venous thromboembolism and s…
View article: Three-level ACDF versus 3-level laminectomy and fusion: are there differences in outcomes? An analysis of the Quality Outcomes Database cervical spondylotic myelopathy cohort
Three-level ACDF versus 3-level laminectomy and fusion: are there differences in outcomes? An analysis of the Quality Outcomes Database cervical spondylotic myelopathy cohort Open
OBJECTIVE The authors sought to compare 3-level anterior with posterior fusion surgical procedures for the treatment of multilevel cervical spondylotic myelopathy (CSM). METHODS The authors analyzed prospective data from the 14 highest enr…
View article: Cervical laminoplasty versus laminectomy and posterior cervical fusion for cervical myelopathy: propensity-matched analysis of 24-month outcomes from the Quality Outcomes Database
Cervical laminoplasty versus laminectomy and posterior cervical fusion for cervical myelopathy: propensity-matched analysis of 24-month outcomes from the Quality Outcomes Database Open
OBJECTIVE Compared with laminectomy with posterior cervical fusion (PCF), cervical laminoplasty (CL) may result in different outcomes for those operated on for cervical spondylotic myelopathy (CSM). The aim of this study was to compare 24-…
View article: Comparison of Lumbosacral Fusion Grade in Patients after Transforaminal and Anterior Lumbar Interbody Fusion with Minimum 2‐Year Follow‐Up
Comparison of Lumbosacral Fusion Grade in Patients after Transforaminal and Anterior Lumbar Interbody Fusion with Minimum 2‐Year Follow‐Up Open
Objective Generally, anterior lumbar interbody fusion (ALIF) was believed superior to transforaminal lumbar interbody fusion (TLIF) in induction of fusion. However, many studies have reported comparable results in lumbosacral fusion rate b…
View article: Study on Articular Surface Morphology of Atlantoaxial Lateral Mass Based on Differential Manifold
Study on Articular Surface Morphology of Atlantoaxial Lateral Mass Based on Differential Manifold Open
Objectives To propose a surface reconstruction algorithm based on a differential manifold (a space with local Euclidean space properties), which can be used for processing of clinical images and for modeling of the atlantoaxial joint. To d…
View article: Developing nonlinear k-nearest neighbors classification algorithms to identify patients at high risk of increased length of hospital stay following spine surgery
Developing nonlinear k-nearest neighbors classification algorithms to identify patients at high risk of increased length of hospital stay following spine surgery Open
OBJECTIVE Spondylolisthesis is a common operative disease in the United States, but robust predictive models for patient outcomes remain limited. The development of models that accurately predict postoperative outcomes would be useful to h…
View article: Which supervised machine learning algorithm can best predict achievement of minimum clinically important difference in neck pain after surgery in patients with cervical myelopathy? A QOD study
Which supervised machine learning algorithm can best predict achievement of minimum clinically important difference in neck pain after surgery in patients with cervical myelopathy? A QOD study Open
OBJECTIVE The purpose of this study was to evaluate the performance of different supervised machine learning algorithms to predict achievement of minimum clinically important difference (MCID) in neck pain after surgery in patients with ce…