Yasuchika Aoki
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View article: Comparison of Three Evaluation Methods for the Lumbar Intervertebral Disc Vacuum Phenomenon in Predicting Postoperative Residual Lower Back Pain
Comparison of Three Evaluation Methods for the Lumbar Intervertebral Disc Vacuum Phenomenon in Predicting Postoperative Residual Lower Back Pain Open
Evaluation of VP severity based on VP size (modified Willhuber's classification, SVP2) demonstrated the highest numerical predictive accuracy for postoperative residual LBP, but differences compared with other methods were not statisticall…
View article: Evaluation of fracture lines in adolescent lumbar spondylolysis using MR bone imaging as an alternative to computed tomography
Evaluation of fracture lines in adolescent lumbar spondylolysis using MR bone imaging as an alternative to computed tomography Open
Purpose The diagnosis of adolescent lumbar spondylolysis typically requires computed tomography (CT) imaging; however, concerns regarding medical radiation exposure have emerged. With recent advancements in magnetic resonance imaging (MRI)…
View article: Clinical Significance of Difference in Lumbar Lordosis (DiLL) as a Dynamic Spinal Alignment Parameter: A Narrative Review
Clinical Significance of Difference in Lumbar Lordosis (DiLL) as a Dynamic Spinal Alignment Parameter: A Narrative Review Open
View article: Clinical and Economic Outcomes of Intradiscal Injection of Condoliase for a Treatment of Lumbar Disc Herniation with Severe Low Back Pain: A Multicenter Study
Clinical and Economic Outcomes of Intradiscal Injection of Condoliase for a Treatment of Lumbar Disc Herniation with Severe Low Back Pain: A Multicenter Study Open
This retrospective multicenter study revealed that patients with LDH with severe LBP frequently experienced improvement in radicular pain and LBP, which is similar to LDH cases without severe LBP.
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: 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: 43. The utility of bone imaging MRI as a novel diagnostic method for pediatric lumbar spondylolysis, replacing CT
43. The utility of bone imaging MRI as a novel diagnostic method for pediatric lumbar spondylolysis, replacing CT Open
View article: Retroperitoneal continuous local antibiotic perfusion for surgical site infection after lumbar lateral interbody fusion: A case report
Retroperitoneal continuous local antibiotic perfusion for surgical site infection after lumbar lateral interbody fusion: A case report Open
Surgical site infection (SSI) after instrumented spinal surgery (ISS) is one of the most serious surgical complications. Treatment is often difficult, with many cases requiring removal of the implant. An 80-year-old man developed refractor…
View article: Association between Osteoporosis and Skeletal Muscle Mass in Men
Association between Osteoporosis and Skeletal Muscle Mass in Men Open
Study Design: Cross-sectional study.Purpose: This cross-sectional study aimed to investigate the risk factors for osteoporosis in men by assessing bone mineral density (BMD), skeletal muscle mass, body fat mass, grip strength, and advanced…
View article: Combined effect of DBM, PRP, and bone marrow fluid on bone union in a rat posterolateral fusion model
Combined effect of DBM, PRP, and bone marrow fluid on bone union in a rat posterolateral fusion model Open
View article: Objective Assessment of Sleep Disorders in Patients with Lumbar Spinal Stenosis Using Wearable Trackers
Objective Assessment of Sleep Disorders in Patients with Lumbar Spinal Stenosis Using Wearable Trackers Open
Sleep disorders in patients with LSS were evaluated, and improvement in sleep disorders following surgery was associated with the intensity of preoperative low-back pain. Sleep disorders are associated with QOL disorders, suggesting that f…
View article: The impact of postoperative inclination of the joint line on clinical outcomes in total knee arthroplasty using a prosthesis with anatomical geometry
The impact of postoperative inclination of the joint line on clinical outcomes in total knee arthroplasty using a prosthesis with anatomical geometry Open
The goal of this study was to investigate the impact of postoperative inclination of the joint line on clinical results after total knee arthroplasty (TKA) using a prosthesis with anatomical geometry. This study included 145 primary crucia…
View article: Clinical Efficacy of Neurotropin for Lumbar Spinal Stenosis with Low Back Pain
Clinical Efficacy of Neurotropin for Lumbar Spinal Stenosis with Low Back Pain Open
Purpose We compared the clinical effects of Neurotropin, limaprost alfadex, and a combination of both drugs for lumbar spinal stenosis (LSS) with low back pain (LBP). Methods We conducted a multicenter, randomized, active-controlled, open-…
View article: Effect of low body mass index on clinical recovery after fusion surgery for osteoporotic vertebral fracture: A retrospective, multicenter study of 237 cases
Effect of low body mass index on clinical recovery after fusion surgery for osteoporotic vertebral fracture: A retrospective, multicenter study of 237 cases Open
A retrospective multicenter study. Body mass index (BMI) is recognized as an important determinant of osteoporosis and spinal postoperative outcomes; however, the specific impact of BMI on surgery for osteoporotic vertebral fractures (OVFs…
View article: Lateral shift of the femoral condyle after total knee arthroplasty: simulation using 2D-templates of the medial pivot design on knee radiographs of young Japanese patients
Lateral shift of the femoral condyle after total knee arthroplasty: simulation using 2D-templates of the medial pivot design on knee radiographs of young Japanese patients Open
View article: Changes in lumbar lordosis and predicted minimum 5-year surgical outcomes after short-segment transforaminal lumbar interbody fusion
Changes in lumbar lordosis and predicted minimum 5-year surgical outcomes after short-segment transforaminal lumbar interbody fusion Open
View article: A multicenter study of 1-year mortality and walking capacity after spinal fusion surgery for cervical fracture in elderly patients
A multicenter study of 1-year mortality and walking capacity after spinal fusion surgery for cervical fracture in elderly patients Open
View article: Unexpectedly rapid decrease in the size of a spinal epidural abscess after percutaneous posterior pedicle screw fixation without decompression surgery: a case report
Unexpectedly rapid decrease in the size of a spinal epidural abscess after percutaneous posterior pedicle screw fixation without decompression surgery: a case report Open
View article: Medical Accidents Related to Ferromagnetic Objects Brought into the MRI Room: Analysis of the National Multicenter Database by Orthopedic Surgeons
Medical Accidents Related to Ferromagnetic Objects Brought into the MRI Room: Analysis of the National Multicenter Database by Orthopedic Surgeons Open
Manuals and checklists should be developed and continuous education provided to prevent accidents involving magnetic objects brought into the MR scanner room. As orthopedic surgeons, including spine surgeons, we should be cautious with eme…
View article: Postoperative loss of correction after combined posterior and anterior spinal fusion surgeries in a lumbar burst fracture patient with Class II obesity
Postoperative loss of correction after combined posterior and anterior spinal fusion surgeries in a lumbar burst fracture patient with Class II obesity Open
Background: When treating thoracolumbar fractures with severe cranial endplate injury but no or slight caudal endplate injury, it is debatable whether anterior fusion should be performed only for the injured cranial level, or for both cran…
View article: Evaluation of Spinal Alignment and Clinical Findings for the Efficacy of One-Stage Surgery in Tandem Spinal Stenosis
Evaluation of Spinal Alignment and Clinical Findings for the Efficacy of One-Stage Surgery in Tandem Spinal Stenosis Open
View article: A multicenter study of 1-year mortality and walking capacity after spinal fusion surgery for cervical fracture in elderly patients
A multicenter study of 1-year mortality and walking capacity after spinal fusion surgery for cervical fracture in elderly patients Open
Background: The 1-year mortality and functional prognoses of patients who received surgery for cervical trauma in the elderly remains unclear. The aim of this study is to investigate the rates of, and factors associated with mortality and …
View article: Prognostic Factors for Cervical Spinal Cord Injury without Major Bone Injury in Elderly Patients
Prognostic Factors for Cervical Spinal Cord Injury without Major Bone Injury in Elderly Patients Open
In the current aging society, there has been a marked increase in the incidence of cervical spinal cord injury (CSCI) without major bone injury. This multi-center study aimed to identify predictors of neurological improvement in elderly pa…
View article: Cooccurrence of Fragility Fracture of the Pelvis with Lumbar Degenerative Disease: A Case Report
Cooccurrence of Fragility Fracture of the Pelvis with Lumbar Degenerative Disease: A Case Report Open
Introduction: Fragility fractures of the pelvis (FFP) are caused by low-energy impacts and can occur spontaneously in patients with severe osteoporosis. The clinical symptoms of FFP are frequently vague and nonspecific. Moreover, the sympt…
View article: Is Blood Loss Greater in Elderly Patients under Antiplatelet or Anticoagulant Medication for Cervical Spine Injury Surgery? A Japanese Multicenter Survey
Is Blood Loss Greater in Elderly Patients under Antiplatelet or Anticoagulant Medication for Cervical Spine Injury Surgery? A Japanese Multicenter Survey Open
This multicenter study revealed no significant increase in surgical blood loss in elderly patients with cervical trauma taking APAC drugs. Surgeons may be able to prioritize patient background, complications, and preexisting conditions ove…
View article: Risk Factors for Lateral Translation in Residual Adolescent Idiopathic Scoliosis with a Thoracolumbar/Lumbar Curve
Risk Factors for Lateral Translation in Residual Adolescent Idiopathic Scoliosis with a Thoracolumbar/Lumbar Curve Open
Older age, especially >37 years, is a risk factor for lateral slip in patients with residual AIS. These findings suggest that surgery for residual AIS should be considered before patients are in their mid-30s to avoid lateral translation.
View article: Mechanical testing of cephalomedullary nail lag screws after the addition of hydroxyapatite substitutes
Mechanical testing of cephalomedullary nail lag screws after the addition of hydroxyapatite substitutes Open
Objective: To compare the effects of 3 implant designs, with and without hydroxyapatite reinforcement, on push/pull-out strength and rotational torque. Methods: Three implant designs (Gamma 3, INTERTAN, and PFNA-II) were selected for compa…
View article: Serum Reactive Oxygen Metabolites as a Predictor of Clinical Disease Activity Index, Simplified Disease Activity Index, and Boolean Remissions in Rheumatoid Arthritis Patients Treated With Biologic Agents
Serum Reactive Oxygen Metabolites as a Predictor of Clinical Disease Activity Index, Simplified Disease Activity Index, and Boolean Remissions in Rheumatoid Arthritis Patients Treated With Biologic Agents Open
Introduction Reactive oxygen metabolites (ROMs) are metabolite hydroperoxides in the blood, and their serum levels were associated with the disease activity score 28 (DAS28) in patients with rheumatoid arthritis (RA). In this study, we aim…
View article: The Quantity and Quality of Lumbar Muscles and Lumbopelvic Parameters in Patients With Degenerative Spondylolisthesis
The Quantity and Quality of Lumbar Muscles and Lumbopelvic Parameters in Patients With Degenerative Spondylolisthesis Open
View article: Early Knee Osteoarthritis Changes Pre- And Post-Anterior Cruciate Ligament Reconstruction Assessed By the Semi-Quantitative MRI Osteoarthritis Knee Score (MOAKS) Case Series and Case-Control Study
Early Knee Osteoarthritis Changes Pre- And Post-Anterior Cruciate Ligament Reconstruction Assessed By the Semi-Quantitative MRI Osteoarthritis Knee Score (MOAKS) Case Series and Case-Control Study Open
Background: Semi-quantitative scoring of knee abnormalities on magnetic resonance imaging (MRI) can aid in the diagnosis of early stage knee osteoarthritis (OA). Injuries to the anterior cruciate ligament (ACL) and medial meniscus (MM) can…