Toshiki Okubo
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View article: Does Surgeon Experience Influence Surgical Safety and Patient Satisfaction After Anterior Cervical Discectomy and Fusion? A Prospective Multicenter Comparison Study Between Non-Board-Certified and Board-Certified Spine Surgeons
Does Surgeon Experience Influence Surgical Safety and Patient Satisfaction After Anterior Cervical Discectomy and Fusion? A Prospective Multicenter Comparison Study Between Non-Board-Certified and Board-Certified Spine Surgeons Open
Study Design Prospective multicenter cohort study. Objective To evaluate the impact of surgeon experience on surgical safety, radiographic outcomes, and patient-reported outcomes (PROMs) following anterior cervical discectomy and fusion (A…
View article: Distinct postoperative quality of life trajectories after surgery for degenerative cervical myelopathy: a multicenter prospective cohort study
Distinct postoperative quality of life trajectories after surgery for degenerative cervical myelopathy: a multicenter prospective cohort study Open
View article: Correlation between postoperative shoulder imbalance and distal adding-on and distal junctional kyphosis in Lenke type 2 adolescent idiopathic scoliosis: a retospective study
Correlation between postoperative shoulder imbalance and distal adding-on and distal junctional kyphosis in Lenke type 2 adolescent idiopathic scoliosis: a retospective study Open
Although more proximal LIV selection might lead to stable DA and DJK, the LIV selection should not be extended distally to prevent DA and DJK because favorable shoulder balance and clinical outcome can still be achieved.
View article: Response to Letter to the Editor for “Achieving the Minimum Clinically Important Difference in Japanese Orthopaedic Association Score after Surgery for Degenerative Cervical Myelopathy: Predictive Factors and Impact on Patient-Reported Outcome Measures”
Response to Letter to the Editor for “Achieving the Minimum Clinically Important Difference in Japanese Orthopaedic Association Score after Surgery for Degenerative Cervical Myelopathy: Predictive Factors and Impact on Patient-Reported Outcome Measures” Open
View article: Inferior Outcomes of Posterior Correction and Fusion Surgery for Adults With Residual Lenke Type 5 Adolescent Idiopathic Scoliosis: A Comparative Study With Adolescents
Inferior Outcomes of Posterior Correction and Fusion Surgery for Adults With Residual Lenke Type 5 Adolescent Idiopathic Scoliosis: A Comparative Study With Adolescents Open
Study Design Retrospective cohort study. Objective This study aimed to determine whether the outcomes of posterior correction and fusion surgery (PSF) in patients with residual adolescent idiopathic scoliosis (AIS) during adulthood (Lenke …
View article: Achieving the Minimum Clinically Important Difference in Japanese Orthopaedic Association Score After Surgery for Degenerative Cervical Myelopathy: Predictive Factors and Impact on Patient-Reported Outcome Measures
Achieving the Minimum Clinically Important Difference in Japanese Orthopaedic Association Score After Surgery for Degenerative Cervical Myelopathy: Predictive Factors and Impact on Patient-Reported Outcome Measures Open
Study Design Prospective multicenter cohort study. Objectives Although surgery for degenerative cervical myelopathy (DCM) often improves neurological function, predicting clinically meaningful recovery remains challenging. To identify preo…
View article: Ten-Year Clinical Outcomes After Decompression Surgery for Lumbar Spinal Stenosis: The Impact of Preoperative Modic Changes
Ten-Year Clinical Outcomes After Decompression Surgery for Lumbar Spinal Stenosis: The Impact of Preoperative Modic Changes Open
Study Design Retrospective Cohort Study. Objective Modic changes (MCs) have been associated with low back pain; however, their prognostic value in surgical outcomes—particularly in patients with lumbar spinal stenosis (LSS) treated with de…
View article: Proximal Thoracic Alignment Change Influences Cervical Sagittal Alignment After Correction Surgery in Patients With Lenke Type 2 Adolescent Idiopathic Scoliosis
Proximal Thoracic Alignment Change Influences Cervical Sagittal Alignment After Correction Surgery in Patients With Lenke Type 2 Adolescent Idiopathic Scoliosis Open
Objective: To examine the factors influencing cervical sagittal alignment (CSA) after posterior correction and fusion surgery (PSF) for patients with Lenke type 2 adolescent idiopathic scoliosis (AIS).Methods: A total of 102 female patient…
View article: Imaging Characteristics, Clinical Presentation, and Prognosis of Spinal Cord Infarction
Imaging Characteristics, Clinical Presentation, and Prognosis of Spinal Cord Infarction Open
Study design: Retrospective cohort study. Introduction: Spinal cord infarction is a rare condition, and many aspects of its pathophysiology remain unclear. The purpose of this study is to conduct a comprehensive analysis of the clinical sy…
View article: Identification of Risk Factors for Long-Term Surgical Outcomes Following Laminoplasty for Cervical Ossification of the Posterior Longitudinal Ligament
Identification of Risk Factors for Long-Term Surgical Outcomes Following Laminoplasty for Cervical Ossification of the Posterior Longitudinal Ligament Open
Study Design Retrospective multi-institutional study. Objectives Although previous studies have evaluated the surgical outcomes of laminoplasty in patients with cervical ossification of the posterior longitudinal ligament (OPLL), the long-…
View article: Effect of the discrepancy between sacral and pelvic obliquity on postoperative disk wedging below the lower instrumented vertebra in patients with Lenke type 5 adolescent idiopathic scoliosis: a retrospective study in Japan
Effect of the discrepancy between sacral and pelvic obliquity on postoperative disk wedging below the lower instrumented vertebra in patients with Lenke type 5 adolescent idiopathic scoliosis: a retrospective study in Japan Open
Study Design: Retrospective cohort study.Purpose: To evaluate the effect of discrepancies between sacral and pelvic obliquity on postoperative disk wedging below the lower instrumented vertebra in Lenke type 5 adolescent idiopathic scolios…
View article: Surgical Outcomes of Ventrally Located Cervical Spinal Meningiomas
Surgical Outcomes of Ventrally Located Cervical Spinal Meningiomas Open
Study Design: Retrospective cohort study Objectives: Ventrally located cervical spinal meningiomas present significant surgical challenges due to their proximity to the spinal cord and nerve roots. This study aimed to evaluate the surgical…
View article: Impact of Cigarette Smoking on Clinical Outcomes after Surgical Resection in Patients with Intramedullary Spinal Cord Tumors: A Retrospective Comparative Study
Impact of Cigarette Smoking on Clinical Outcomes after Surgical Resection in Patients with Intramedullary Spinal Cord Tumors: A Retrospective Comparative Study Open
View article: Intraoperative Radiographic Factors Related to Postoperative Distal Adding-On in Lenke Type 1A Adolescent Idiopathic Scoliosis
Intraoperative Radiographic Factors Related to Postoperative Distal Adding-On in Lenke Type 1A Adolescent Idiopathic Scoliosis Open
View article: Surgical outcomes of cervical spinal cord tumor in elderly patients assessed by the Japanese Orthopedic Association Cervical Myelopathy Evaluation Questionnaire
Surgical outcomes of cervical spinal cord tumor in elderly patients assessed by the Japanese Orthopedic Association Cervical Myelopathy Evaluation Questionnaire Open
Study Design. Single-institution retrospective study Objectives. To assess postoperative functional and quality of life (QOL) outcomes in elderly patients who underwent cervical spinal cord tumor surgery using the Japanese Orthopedic Assoc…
View article: Efficacy of Airway Management Protocol for Cervical Anterior Surgery, Posterior Occipitocervical Fusion, and Intramedullary Tumor Resection
Efficacy of Airway Management Protocol for Cervical Anterior Surgery, Posterior Occipitocervical Fusion, and Intramedullary Tumor Resection Open
Our airway management protocol substantially reduced the need for reintubation. These findings emphasize the importance of postoperative respiratory management after cervical spine surgeries and underscore the need for appropriate measures…
View article: Clinical Implications of Surgical Resection without Spinal Fixation in Lumbar Dumbbell Tumors: Evaluating Postoperative Lumbar Alignment and Patient Outcomes
Clinical Implications of Surgical Resection without Spinal Fixation in Lumbar Dumbbell Tumors: Evaluating Postoperative Lumbar Alignment and Patient Outcomes Open
Tumor resection without spinal fixation had no substantial impact on local and global spinal alignments and led to satisfactory clinical outcomes, suggesting that spinal fixation may not always be necessary when resecting LDTs.
View article: Effects of Preoperative Cervical Range of Motion on Clinical Outcomes Following Posterior Decompression: A Multicenter Study of Patients With Cervical Ossification of the Posterior Longitudinal Ligament
Effects of Preoperative Cervical Range of Motion on Clinical Outcomes Following Posterior Decompression: A Multicenter Study of Patients With Cervical Ossification of the Posterior Longitudinal Ligament Open
Study Design Retrospective multicenter study. Objectives To investigate the impact of preoperative cervical range of motion (ROM) on clinical outcomes after posterior decompression for cervical ossification of the posterior longitudinal li…
View article: Assessment of the Postoperative Progression in Patients With Intramedullary Spinal Cord Tumors Based on the Severity of Preoperative Gait Disturbance
Assessment of the Postoperative Progression in Patients With Intramedullary Spinal Cord Tumors Based on the Severity of Preoperative Gait Disturbance Open
Study Design Retrospective comparative study. Objectives This study aimed to determine whether the severity of preoperative gait disturbance remains after surgical resection in patients with intramedullary spinal cord tumors (IMSCTs), and …
View article: A Case of Early Onset Scoliosis with Trisomy 1q and Monosomy 21q
A Case of Early Onset Scoliosis with Trisomy 1q and Monosomy 21q Open
View article: Comparison of Surgical Outcomes After Posterior Decompression by Junior or Senior Surgeons for Patients With Cervical Ossification of the Posterior Longitudinal Ligament: Results From Retrospective Multicenter Cohort Study
Comparison of Surgical Outcomes After Posterior Decompression by Junior or Senior Surgeons for Patients With Cervical Ossification of the Posterior Longitudinal Ligament: Results From Retrospective Multicenter Cohort Study Open
Study Design Retrospective multicenter study. Objectives To investigate surgical outcomes following posterior decompression for cervical ossification of the posterior longitudinal ligament (OPLL) when performed by board-certified spine (BC…
View article: Surgical Treatment for Cervical Lamina Metastasis from Parathyroid Carcinoma: A Case Report
Surgical Treatment for Cervical Lamina Metastasis from Parathyroid Carcinoma: A Case Report Open
View article: Impact of Surgical Resection Without Spinal Fusion for Thoracic Dumbbell Tumors on Postoperative Global Spinal Sagittal Alignment and Clinical Outcomes
Impact of Surgical Resection Without Spinal Fusion for Thoracic Dumbbell Tumors on Postoperative Global Spinal Sagittal Alignment and Clinical Outcomes Open
Study Design A retrospective comparative study. Objectives This study investigated radiographical changes in global spinal sagittal alignment (GSSA) and clinical outcomes after tumor resection without spinal fusion in patients with thoraci…
View article: Effects of Bone Cross-Link Bridging on Fracture Mechanism and Surgical Outcomes in Elderly Patients with Spine Fractures
Effects of Bone Cross-Link Bridging on Fracture Mechanism and Surgical Outcomes in Elderly Patients with Spine Fractures Open
Study Design: This study adopted a cross-sectional study design.Purpose: This study was designed to investigate the effects of bone cross-link bridging on fracture mechanism and surgical outcomes in vertebral fractures using the maximum nu…
View article: Resection of Cervical Dumbbell-Shaped Schwannoma Using Posterior Unilateral Approach: Impact on Postoperative Cervical Function and Clinical Outcomes
Resection of Cervical Dumbbell-Shaped Schwannoma Using Posterior Unilateral Approach: Impact on Postoperative Cervical Function and Clinical Outcomes Open
Study Design A retrospective comparative study Objectives This study aimed to evaluate the radiographical changes in cervical sagittal alignment (CSA) and clinical outcomes after tumor resection using a posterior unilateral approach withou…
View article: Incidence and predictive factors of shoulder imbalance after selective anterior spinal fusion surgery in Lenke type 5C adolescent idiopathic scoliosis
Incidence and predictive factors of shoulder imbalance after selective anterior spinal fusion surgery in Lenke type 5C adolescent idiopathic scoliosis Open
BACKGROUND: No study has assessed the incidence or predictors of postoperative shoulder imbalance (PSI) in patients with Lenke type 5C adolescent idiopathic scoliosis (AIS) who underwent selective anterior spinal fusion (ASF). This study e…
View article: Cervical sagittal alignment is influenced by changes in thoracic and lumbar sagittal alignments after correction surgery in patients with lenke type 6 adolescent idiopathic scoliosis
Cervical sagittal alignment is influenced by changes in thoracic and lumbar sagittal alignments after correction surgery in patients with lenke type 6 adolescent idiopathic scoliosis Open
View article: Normal pressure hydrocephalus due to an iatrogenic giant lumbar pseudomeningocele after posterior lumbar interbody fusion: illustrative case
Normal pressure hydrocephalus due to an iatrogenic giant lumbar pseudomeningocele after posterior lumbar interbody fusion: illustrative case Open
BACKGROUND Iatrogenic pseudomeningocele incidence after lumbar surgery is 0.068%–2%, and most lumbar pseudomeningoceles are smaller than 5 cm; however, in rare cases, “giant” pseudomeningoceles greater than 8 cm in size may develop. Normal…
View article: Spinous Process-Splitting Laminectomy Approach for Tumor Excision at Conus Medullaris or Cauda Equina Level Results in Satisfactory Clinical Outcomes Without Affecting Global Spinal Sagittal Alignment
Spinous Process-Splitting Laminectomy Approach for Tumor Excision at Conus Medullaris or Cauda Equina Level Results in Satisfactory Clinical Outcomes Without Affecting Global Spinal Sagittal Alignment Open
Study design Retrospective comparative study. Objectives The present study investigated radiographical changes in global spinal sagittal alignment (GSSA) and clinical outcomes following tumor resection using spinous process-splitting lamin…
View article: First-in-human clinical trial of transplantation of iPSC-derived NS/PCs in subacute complete spinal cord injury: Study protocol
First-in-human clinical trial of transplantation of iPSC-derived NS/PCs in subacute complete spinal cord injury: Study protocol Open