Kota Watanabe
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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: 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: The significance of adding posterior decompression to spine stabilization in metastatic spinal surgery: a multicenter prospective study
The significance of adding posterior decompression to spine stabilization in metastatic spinal surgery: a multicenter prospective study Open
The usefulness of spine stabilization for treating metastatic spinal tumors with tumor-induced instability has been reported. However, no reports have prospectively evaluated the effectiveness of adding posterior decompression to stabiliza…
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: Survival days of patients with metastatic spinal tumors of lung cancer requiring surgery: a prospective multicenter study
Survival days of patients with metastatic spinal tumors of lung cancer requiring surgery: a prospective multicenter study Open
Surgery for metastatic spinal tumors has improved postoperative activities of daily living. A few studies reported on prognostic factors assessed in large multicenter prospective studies for metastatic spinal tumors of lung cancer origin. …
View article: Longitudinal MRI study over 20 years of cervical posterior extensor muscle area in asymptomatic subjects
Longitudinal MRI study over 20 years of cervical posterior extensor muscle area in asymptomatic subjects Open
Few studies have investigated long-term changes in the posterior extensor muscles of the cervical spine in healthy subjects. Therefore, we used MRI to investigate changes in the posterior extensor muscles in healthy subjects over 20 years.…
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: Characteristics and Clinical Outcomes of Transition from Conservative Therapy to Surgical Intervention in Older Patients with Cervical Spinal Cord Injury without Major Bone Injury: A Nationwide Retrospective Study
Characteristics and Clinical Outcomes of Transition from Conservative Therapy to Surgical Intervention in Older Patients with Cervical Spinal Cord Injury without Major Bone Injury: A Nationwide Retrospective Study Open
A significant proportion of older patients with CSCI without major bone injury who were initially managed conservatively eventually required surgery due to insufficient neurological improvement. The outcomes of patients who transitioned to…
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: Cross-sectional area of posterior extensor muscles of cervical spine in asymptomatic subjects: a 20-year longitudinal MRI study
Cross-sectional area of posterior extensor muscles of cervical spine in asymptomatic subjects: a 20-year longitudinal MRI study Open
Few studies have investigated long-term changes in the posterior extensor muscles of the cervical spine in healthy subjects. Therefore, we used MRI to investigate changes in the posterior extensor muscles in healthy subjects over 20 years.…
View article: Precise 3D measurement of internode elongation just below shoot apex for growth diagnosis of greenhouse cucumber plants using SfM/MVS method
Precise 3D measurement of internode elongation just below shoot apex for growth diagnosis of greenhouse cucumber plants using SfM/MVS method Open
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: 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: Influence of Diabetes Mellitus on Neurological Recovery in Older Patients With Cervical Spinal Cord Injury Without Bone Injury: A Retrospective Multicenter Study
Influence of Diabetes Mellitus on Neurological Recovery in Older Patients With Cervical Spinal Cord Injury Without Bone Injury: A Retrospective Multicenter Study Open
Study Design Retrospective study. Objectives To investigate the impact of diabetes mellitus on neurological recovery and determine the relationship between moderate-severe diabetes and neurological recovery in patients with cervical spinal…
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 Growing Rod Surgery for Early-Onset Scoliosis on Cervical Sagittal Alignment
Impact of Growing Rod Surgery for Early-Onset Scoliosis on Cervical Sagittal Alignment Open
Smaller preoperative C2-7 angles and larger T1S-CL values were identified as risk factors for CM. Postoperative CM is more likely to occur in patients with reduced compensatory function to maintain preoperative cervical kyphosis.
View article: Age-specific Comparative Clinical Outcomes of Chemonucleolysis with Condoliase versus Microendoscopic Discectomy in Patients with Lumbar Disc Herniation
Age-specific Comparative Clinical Outcomes of Chemonucleolysis with Condoliase versus Microendoscopic Discectomy in Patients with Lumbar Disc Herniation Open
Condoliase and MED had equivalent 1-year outcomes, with no differences observed in efficacy across age groups. For informed decision-making, the advantages and disadvantages of each treatment must be understood.
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: Sample collecting methods for bacterial community structure analysis of scalp hair: non-invasive swabbing versus intrusive hair shaft cutting
Sample collecting methods for bacterial community structure analysis of scalp hair: non-invasive swabbing versus intrusive hair shaft cutting Open
Human skin samples for microbiome analysis are traditionally collected using a non-invasive swabbing method. Here, we compared the differences in bacterial community structures on scalp hair and scalps with samples collected using non-inva…
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: Sample collecting methods for bacterial community structure analysis of scalp hair: non-invasive swabbing versus invasive hair shaft cutting
Sample collecting methods for bacterial community structure analysis of scalp hair: non-invasive swabbing versus invasive hair shaft cutting Open
Human skin samples for microbiome analysis are traditionally collected using a non-invasive swabbing method. Here, we compared the differences in bacterial community structures on scalp hair and scalps with samples collected using non-inva…
View article: Outcome of intradiscal condoliase injection therapy for patients with recurrent lumbar disc herniation
Outcome of intradiscal condoliase injection therapy for patients with recurrent lumbar disc herniation Open
Study Design: Retrospective cohort study.Purpose: This study aimed to compare data from patients who received intradiscal condoliase (chondroitin sulfate ABC endolyase) injection for primary lumbar disc herniation (LDH) and recurrent LDH.O…
View article: Comparison of three artificial intelligence algorithms for automatic cobb angle measurement using teaching data specific to three disease groups
Comparison of three artificial intelligence algorithms for automatic cobb angle measurement using teaching data specific to three disease groups Open
Spinal deformities, including adolescent idiopathic scoliosis (AIS) and adult spinal deformity (ASD), affect many patients. The measurement of the Cobb angle on coronal radiographs is essential for their diagnosis and treatment planning. T…
View article: Assessing the Reproducibility of the Structured Abstracts Generated by ChatGPT and Bard Compared to Human-Written Abstracts in the Field of Spine Surgery: Comparative Analysis
Assessing the Reproducibility of the Structured Abstracts Generated by ChatGPT and Bard Compared to Human-Written Abstracts in the Field of Spine Surgery: Comparative Analysis Open
Background Due to recent advances in artificial intelligence (AI), language model applications can generate logical text output that is difficult to distinguish from human writing. ChatGPT (OpenAI) and Bard (subsequently rebranded as “Gemi…