Jun Ouchida
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View article: Association between the central sensitization inventory score and health-related quality of life in community-dwelling middle-aged and older adults
Association between the central sensitization inventory score and health-related quality of life in community-dwelling middle-aged and older adults Open
Background Central sensitization is an important factor associated with impaired health-related quality of life in patients with musculoskeletal disorders and community-dwelling older adults. However, health-related quality-of-life domains…
View article: Current status of indirect decompression with lateral lumbar interbody fusion.
Current status of indirect decompression with lateral lumbar interbody fusion. Open
The adoption of lumbar fusion techniques, particularly lateral lumbar interbody fusion (LLIF), has significantly evolved the management of degenerative lumbar spinal conditions. LLIF, introduced as a minimally invasive surgical procedure, …
View article: Comparative analysis of bone regeneration in critical-sized defects using self-assembling peptide hydrogel-178, bone morphogenetic protein-2, and calcium phosphate scaffolds in a rat femur model.
Comparative analysis of bone regeneration in critical-sized defects using self-assembling peptide hydrogel-178, bone morphogenetic protein-2, and calcium phosphate scaffolds in a rat femur model. Open
Bone regeneration is a highly demanded but challenging clinical endeavor in orthopedic surgery, necessitating the development of alternative bone grafting materials. This study aimed to evaluate the bone regenerative potential of self-asse…
View article: Preliminary observations on neuromuscular pathways of the lower extremities: findings from intraoperative nerve root stimulation.
Preliminary observations on neuromuscular pathways of the lower extremities: findings from intraoperative nerve root stimulation. Open
The segmental innervation patterns of lower extremity muscles remain poorly defined, despite their critical importance in both clinical diagnosis and surgical planning for lumbar spinal conditions. Variability in these patterns, particular…
View article: Clinical outcomes of posterior lumbar interbody fusion in chronic renal failure patients on hemodialysis.
Clinical outcomes of posterior lumbar interbody fusion in chronic renal failure patients on hemodialysis. Open
Chronic kidney disease (CKD) and its treatment with hemodialysis (HD) pose unique challenges for spinal surgery due to complications such as destructive spondyloarthropathy (DSA). This study retrospectively compared the surgical outcomes o…
View article: Incidence and risk factors of cerebrospinal fluid leakage related complications after spinal intradural tumor resection.
Incidence and risk factors of cerebrospinal fluid leakage related complications after spinal intradural tumor resection. Open
Cerebrospinal fluid (CSF) leakage is a common and serious complication of spinal surgery, particularly after intradural tumor resection. CSF leakage can lead to debilitating headaches, neurological deficits, and other symptoms, with an inc…
View article: Dietary intake and its association with sarcopenia in older adults: a cross-sectional analysis.
Dietary intake and its association with sarcopenia in older adults: a cross-sectional analysis. Open
Sarcopenia, a condition characterized by the loss of muscle mass and function, poses a major health challenge among older adults. Identifying nutritional factors and dietary patterns associated with sarcopenia is critical for developing ta…
View article: Postoperative Deterioration of Sagittal Balance in Adult Spinal Deformities: Influence of Preoperative Alignment and Pelvic Incidence
Postoperative Deterioration of Sagittal Balance in Adult Spinal Deformities: Influence of Preoperative Alignment and Pelvic Incidence Open
View article: Preoperative Low Lumbar Hounsfield Units and Global Alignment Predict Postoperative Mechanical Complications After Adult Spinal Deformity Surgery: A Multicenter Retrospective Study
Preoperative Low Lumbar Hounsfield Units and Global Alignment Predict Postoperative Mechanical Complications After Adult Spinal Deformity Surgery: A Multicenter Retrospective Study Open
Objectives: This study investigated the potential of Hounsfield unit (HU) values obtained from computed tomography (CT) scans as predictors of mechanical complications (MCs) in patients undergoing long-segment spinal fusion involving the p…
View article: Recent progress in surgical treatment of cervical spine myelopathy – A narrative review
Recent progress in surgical treatment of cervical spine myelopathy – A narrative review Open
Surgical techniques and technology for cervical spondylotic myelopathy (CSM) have demonstrated remarkable advancement during the past decade. This narrative review examines the evolution of surgical approaches and technological innovations…
View article: Longitudinal transitions in frailty and health-related quality of life investigated by a 5-year community study
Longitudinal transitions in frailty and health-related quality of life investigated by a 5-year community study Open
View article: Longitudinal transitions in frailty and their impact on quality of life investigated by a 5-year community study
Longitudinal transitions in frailty and their impact on quality of life investigated by a 5-year community study Open
The purpose of this study was to determine the association between frailty and quality of life (QOL) in a five-year longitudinal cohort of community-dwelling middle-aged and older adults and determine how to identify health-related QOL cha…
View article: Impact of Paraspinal Muscle Degeneration on Surgical Outcomes and Radiographical Sagittal Alignment in Adult Spinal Deformity: A Multicenter Study
Impact of Paraspinal Muscle Degeneration on Surgical Outcomes and Radiographical Sagittal Alignment in Adult Spinal Deformity: A Multicenter Study Open
Objective: This multicenter study aimed to evaluate the impact of paravertebral muscles (PVMs) degeneration, particularly fat infiltration, on preoperative sagittal imbalance, and postoperative complications and sagittal alignment change i…
View article: Development of a YOLOv3-Based Model for Automated Detection of Thoracic Ossification of the Posterior Longitudinal Ligament and the Ligamentum Flavum on Plain Radiographs
Development of a YOLOv3-Based Model for Automated Detection of Thoracic Ossification of the Posterior Longitudinal Ligament and the Ligamentum Flavum on Plain Radiographs Open
Background/Objectives: This study aims to develop and validate a YOLOv3-based deep learning model for detecting ossification of the posterior longitudinal ligament (OPLL) and ossification of the ligamentum flavum (OLF) on lateral thoracic …
View article: Response to Letter to the Editor Regarding the Article Entitled “Trabecular Bone Remodeling After Posterior Lumbar Interbody Fusion: Comparison of the Osseointegration in Three-Dimensional Porous Titanium Cages and Polyether-Ether-Ketone Cages” by Segi et al
Response to Letter to the Editor Regarding the Article Entitled “Trabecular Bone Remodeling After Posterior Lumbar Interbody Fusion: Comparison of the Osseointegration in Three-Dimensional Porous Titanium Cages and Polyether-Ether-Ketone Cages” by Segi et al Open
View article: Clinical Outcomes Associated with Screw Loosening in S2 Alar-Iliac Fixation in Adult Spinal Deformity
Clinical Outcomes Associated with Screw Loosening in S2 Alar-Iliac Fixation in Adult Spinal Deformity Open
Purpose: To explore the clinical outcomes associated with screw loosening after S2 alar-iliac (SAI) screw fixation for adult spinal deformity (ASD). Overview of the literature: SAI fixation is widely used in ASD corrective surgery; despite…
View article: Pelvic ring ratio: a novel indicator of comprehensive pelvic alignment assessment
Pelvic ring ratio: a novel indicator of comprehensive pelvic alignment assessment Open
Study Design: A cross-sectional study.Purpose: To determine the effectiveness of the pelvic ring ratio as an indicator for assessing pelvic tilt (PT) from the frontal view and explore its correlation with various whole-body sagittal alignm…
View article: Impact of diffuse idiopathic skeletal hyperostosis on quality of life and locomotive syndrome in community-dwelling older adults: the Yakumo study
Impact of diffuse idiopathic skeletal hyperostosis on quality of life and locomotive syndrome in community-dwelling older adults: the Yakumo study Open
Diffuse idiopathic skeletal hyperostosis (DISH) is a common disease in older adults that causes extensive spinal ankylosis. However, its impact on quality of life (QOL) and locomotive syndrome (LS) remains unknown. Thus, we aimed to evalua…
View article: Impact of Nutritional Risk on Complications and Recovery in the Older People: A Geriatric Nutritional Risk Index-Based Study
Impact of Nutritional Risk on Complications and Recovery in the Older People: A Geriatric Nutritional Risk Index-Based Study Open
The GNRI serves as a semiquantitative assessment tool that enables the identification of high-risk patients who may benefit from preoperative nutritional interventions.
View article: Preoperative Planning for Cervical Pedicle Screw Placement: Identifying Key Morphological Parameters
Preoperative Planning for Cervical Pedicle Screw Placement: Identifying Key Morphological Parameters Open
Establishing key morphological thresholds enhances preoperative planning for CPS placement, improves accuracy and patient safety, and minimizes complications.
View article: Impact of T1 Slope Visibility on Cervical Sagittal Alignment: A Comparative Study of Radiographic Parameters According to T1 Slope Visibility
Impact of T1 Slope Visibility on Cervical Sagittal Alignment: A Comparative Study of Radiographic Parameters According to T1 Slope Visibility Open
Male patients with obscured T1 slopes exhibited unique radiographic features, including higher C2-C7 SVA and diminished extension capacity. This suggests that the visibility of the T1 slope plays a pivotal role in the evaluation of cervica…
View article: Correction: Safety and feasibility of intravenous administration of a single dose of allogenic-Muse cells to treat human cervical traumatic spinal cord injury: a clinical trial
Correction: Safety and feasibility of intravenous administration of a single dose of allogenic-Muse cells to treat human cervical traumatic spinal cord injury: a clinical trial Open
View article: Effects of Palliative Surgical Treatment for Spinal Metastases on the Patient’s Quality of Life With a Focus on the Segment of the Metastasis: A Prospective Multicenter Study
Effects of Palliative Surgical Treatment for Spinal Metastases on the Patient’s Quality of Life With a Focus on the Segment of the Metastasis: A Prospective Multicenter Study Open
Study Design Prospective multicenter study. Objectives Palliative surgery is crucial for maintaining the quality of life (QOL) in patients with spinal metastases. This study aimed to compare the short-term outcomes of QOL after palliative …
View article: Impact of Fat Mass and Fat-Free Mass on Locomotive Syndrome and Frailty in an Elderly Japanese Population: A Comprehensive Analysis
Impact of Fat Mass and Fat-Free Mass on Locomotive Syndrome and Frailty in an Elderly Japanese Population: A Comprehensive Analysis Open
Background: The roles of fat mass index (FMI) and fat-free mass index (FFMI) in locomotive syndrome (LS) and frailty are not well understood. The current study explored the associations between FMI and FFMI and the prevalence of LS and fra…
View article: Safety and feasibility of intravenous administration of a single dose of allogenic-Muse cells to treat human cervical traumatic spinal cord injury: a clinical trial
Safety and feasibility of intravenous administration of a single dose of allogenic-Muse cells to treat human cervical traumatic spinal cord injury: a clinical trial Open
View article: A novel technique for C1-C2 posterior screw insertion using patient-specific guides created by CT-based 3D printing.
A novel technique for C1-C2 posterior screw insertion using patient-specific guides created by CT-based 3D printing. Open
C1-C2 fixation has been developed for the rigid fusion of atlantoaxial instability. C1 lateral mass screw (C1 LMS)-C2 pedicle screw fixation is used more frequently due to its rigid fixation and high bone fusion rate. However, C1 screw pla…
View article: Trabecular Bone Remodeling after Lateral Lumbar Interbody Fusion: Indirect Findings for Stress Transmission between Vertebrae after Spinal Fusion Surgery
Trabecular Bone Remodeling after Lateral Lumbar Interbody Fusion: Indirect Findings for Stress Transmission between Vertebrae after Spinal Fusion Surgery Open
TBR-positive segments had significantly lower future VEC positivity, higher future facet union rates, and lower future pseudarthrosis rates. In LLIF-PSF, TBR suggests the establishment of intervertebral stability and allows consideration o…
View article: Trabecular Bone Remodeling after Posterior Lumbar Interbody Fusion: Comparison of the Osseointegration in Three-Dimensional Porous Titanium Cages and Polyether-Ether-Ketone Cages
Trabecular Bone Remodeling after Posterior Lumbar Interbody Fusion: Comparison of the Osseointegration in Three-Dimensional Porous Titanium Cages and Polyether-Ether-Ketone Cages Open
Study Design Retrospective cohort study. Objectives Imaging changes in the vertebral body after posterior lumbar interbody fusion (PLIF) are determined to be trabecular bone remodeling (TBR). This study aimed to investigate the influence o…
View article: Indirect Decompression in Vertebral Reconstruction for Osteoporotic Vertebral Fractures with Neurological Symptoms: A Preliminary Case Series
Indirect Decompression in Vertebral Reconstruction for Osteoporotic Vertebral Fractures with Neurological Symptoms: A Preliminary Case Series Open
LP-IDR for OVF with neurological symptoms provided sufficient neurological improvement with expansion of the spinal canal over time.
View article: Comparative Analysis of Characteristics of Lower- and Mid-Cervical Spine Injuries in the Elderly
Comparative Analysis of Characteristics of Lower- and Mid-Cervical Spine Injuries in the Elderly Open
Elderly patients with lower-cervical fractures/dislocations were injured by high-energy trauma significantly more often than patients with mid-cervical injuries. Furthermore, half of the patients with lower-cervical injuries had mid-cervic…