Yoshiyasu Arai
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View article: Cost-effectiveness of intradiscal injection with condoliase versus microendoscopic discectomy for lumbar disc herniation: a retrospective multicenter study
Cost-effectiveness of intradiscal injection with condoliase versus microendoscopic discectomy for lumbar disc herniation: a retrospective multicenter study Open
Intradiscal condoliase injection has been described as a safe treatment with relatively favorable results. In Japan, the direct medical cost of intradiscal condoliase injection is significantly lower than that of microendoscopic discectomy…
View article: Hydroxyapatite/collagen composite graft for anterior cervical discectomy and fusion: a comparison with Iliac crest bone graft
Hydroxyapatite/collagen composite graft for anterior cervical discectomy and fusion: a comparison with Iliac crest bone graft Open
Not applicable.
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: The lower Osteotomy Level is Associated With Decreased Revision Surgery Due to Mechanical Complications After Three-Column Osteotomy in Patients With Adult Spinal Deformity: A Multi-Institutional Retrospective Study
The lower Osteotomy Level is Associated With Decreased Revision Surgery Due to Mechanical Complications After Three-Column Osteotomy in Patients With Adult Spinal Deformity: A Multi-Institutional Retrospective Study Open
Study design A multi-institutional retrospective study. Objectives To investigate risk factors of mechanical failure in three-column osteotomy (3COs) in patients with adult spinal deformity (ASD), focusing on the osteotomy level. Methods W…
View article: Augmented Reality Support for Anterior Decompression and Fusion Using Floating Method for Cervical Ossification of the Posterior Longitudinal Ligament
Augmented Reality Support for Anterior Decompression and Fusion Using Floating Method for Cervical Ossification of the Posterior Longitudinal Ligament Open
Anterior decompression and fusion (ADF) using the floating method for cervical ossification of the posterior longitudinal ligament (OPLL) is an ideal surgical technique, but it has a specific risk of insufficient decompression caused by th…
View article: Prospective Comparative Study of Dysphagia after Subaxial Cervical Spine Surgery: Cervical Spondylotic Myelopathy and Posterior Longitudinal Ligament Ossification
Prospective Comparative Study of Dysphagia after Subaxial Cervical Spine Surgery: Cervical Spondylotic Myelopathy and Posterior Longitudinal Ligament Ossification Open
We prospectively investigated the postoperative dysphagia in cervical posterior longitudinal ligament ossification (C-OPLL) and cervical spondylotic myelopathy (CSM) to identify the risk factors of each disease and the incidence. A series …
View article: Early Experiences of One-Level Total Disc Replacement (Prestige LP) in Japan: A Comparison of Short-Term Outcomes with Anterior Cervical Discectomy with Fusion
Early Experiences of One-Level Total Disc Replacement (Prestige LP) in Japan: A Comparison of Short-Term Outcomes with Anterior Cervical Discectomy with Fusion Open
Conclusively, no differences in terms of C-JOA score and neck pain between patients treated through TDR and ACDF were observed. However, a trend of better NDI scores was identified with TDR. While TDR maintained postoperative ROMs, ACDF sh…
View article: Formulation of Japanese Orthopaedic Association (JOA) clinical practice guideline for the management of low back pain- the revised 2019 edition
Formulation of Japanese Orthopaedic Association (JOA) clinical practice guideline for the management of low back pain- the revised 2019 edition Open
The 2019 clinical practice guideline for the management of low back pain was completed according to the latest evidence-based medicine. We strongly hope that this guideline serves as a benchmark for all physicians, as well as patients, in …
View article: Anterior Cervical Corpectomy with Fusion versus Anterior Hybrid Fusion Surgery for Patients with Severe Ossification of the Posterior Longitudinal Ligament Involving Three or More Levels: A Retrospective Comparative Study
Anterior Cervical Corpectomy with Fusion versus Anterior Hybrid Fusion Surgery for Patients with Severe Ossification of the Posterior Longitudinal Ligament Involving Three or More Levels: A Retrospective Comparative Study Open
Various studies have found a high incidence of early graft dislodgement after multilevel corpectomy. Although a hybrid fusion technique was developed to resolve implant failure, the hybrid and conventional techniques have not been clearly …
View article: Comparison of Lateral Lumbar Interbody Fusion and Posterior Lumbar Interbody Fusion as Corrective Surgery for Patients with Adult Spinal Deformity—A Propensity Score Matching Analysis
Comparison of Lateral Lumbar Interbody Fusion and Posterior Lumbar Interbody Fusion as Corrective Surgery for Patients with Adult Spinal Deformity—A Propensity Score Matching Analysis Open
Lateral lumbar interbody fusion (LLIF) is increasingly performed as corrective surgery for patients with adult spinal deformity (ASD). This paper compares the surgical results of LLIF and conventional posterior lumbar interbody fusion (PLI…
View article: K-Line Tilt is a Predictor of Postoperative Kyphotic Deformity After Laminoplasty for Cervical Myelopathy Caused by Ossification of the Posterior Longitudinal Ligament
K-Line Tilt is a Predictor of Postoperative Kyphotic Deformity After Laminoplasty for Cervical Myelopathy Caused by Ossification of the Posterior Longitudinal Ligament Open
Study Design: Retrospective single-center study. Objectives: K-line is a decision-making tool to determine the appropriate surgical procedures for patients with cervical ossification of the posterior longitudinal ligament (C-OPLL). Laminop…
View article: Surgical outcomes of the thoracic ossification of ligamentum flavum: A retrospective analysis of 61 cases
Surgical outcomes of the thoracic ossification of ligamentum flavum: A retrospective analysis of 61 cases Open
Background: Thoracic ossification of ligamentum flavum (T-OLF), as one of the causes of thoracic myelopathy, is often combined with other spinal disorders. Concurrent lumbar spinal canal stenosis (LCS) is often obscured by symptoms due to …
View article: Surgical outcomes of the thoracic ossification of ligamentum flavum: A retrospective analysis of 61 cases
Surgical outcomes of the thoracic ossification of ligamentum flavum: A retrospective analysis of 61 cases Open
Background: Thoracic ossification of ligamentum flavum (T-OLF), as one of the causes of thoracic myelopathy, is often combined with other spinal disorders. Concurrent lumbar spinal canal stenosis (LCS) is often obscured by symptoms due to …
View article: Sagittal alignment changes and postoperative complications following surgery for adult spinal deformity in patients with Parkinson’s disease: a multi-institutional retrospective cohort study
Sagittal alignment changes and postoperative complications following surgery for adult spinal deformity in patients with Parkinson’s disease: a multi-institutional retrospective cohort study Open
Background: Parkinson’s disease (PD) has been reported to increase the risk of postoperative complications in patients with adult spinal deformity (ASD). However, those studies are limited, and few have made direct comparisons with patient…
View article: Surgical outcomes of the thoracic ossification of ligamentum flavum: A retrospective analysis of 61 cases
Surgical outcomes of the thoracic ossification of ligamentum flavum: A retrospective analysis of 61 cases Open
Background: Thoracic ossification of ligamentum flavum (T-OLF), as one of the causes of thoracic myelopathy, is often combined with other spinal disorders. Concurrent lumbar spinal canal stenosis (LCS) is often obscured by symptoms due to …
View article: Sagittal alignment changes and postoperative complications following surgery for adult spinal deformity in patients with Parkinson’s disease: a multi-institutional retrospective cohort study
Sagittal alignment changes and postoperative complications following surgery for adult spinal deformity in patients with Parkinson’s disease: a multi-institutional retrospective cohort study Open
Background: Parkinson’s disease (PD) has been reported to increase the risk of postoperative complications in patients with adult spinal deformity (ASD). However, those studies are limited, and few have made direct comparisons with patient…
View article: Surgical Outcomes for the Thoracic Ossification of Ligamentum flavum: A Retrospective Analysis of 61 Cases
Surgical Outcomes for the Thoracic Ossification of Ligamentum flavum: A Retrospective Analysis of 61 Cases Open
Background: Thoracic ossification of ligamentum flavum (T-OLF), as one of the causes of thoracic myelopathy, is often combined with other spinal disorders. Concurrent lumbar spinal canal stenosis (LCS) is often abstruse by symptoms due to …
View article: Increased Height of Fused Segments Contributes to Early-Phase Strut Subsidence after Anterior Cervical Corpectomy with Fusion for Multilevel Ossification of the Posterior Longitudinal Ligament
Increased Height of Fused Segments Contributes to Early-Phase Strut Subsidence after Anterior Cervical Corpectomy with Fusion for Multilevel Ossification of the Posterior Longitudinal Ligament Open
A postoperative increase in FSH may affect graft stability and lead to early implant migration.
View article: Sagittal alignment changes and postoperative complications after adult spinal deformity surgery in patients with Parkinson’s disease: A multi-institutional retrospective study
Sagittal alignment changes and postoperative complications after adult spinal deformity surgery in patients with Parkinson’s disease: A multi-institutional retrospective study Open
Background: Parkinson’s disease (PD) has been reported to increase the risk of postoperative complications in patients with adult spinal deformity (ASD). However, those reports are limited, and few have made direct comparisons with patient…
View article: Contiguous Multilevel Thoracic Ossification of Ligamentum Flavum in a Young Adult Spine
Contiguous Multilevel Thoracic Ossification of Ligamentum Flavum in a Young Adult Spine Open
The ossification of the ligamentum flavum (OLF) was characterized by the replacement of the ligamentum flavum by ectopic new bone formation. Although OLF is well known as one of the causes of thoracic myelopathy through the compression of …
View article: Retrospective analysis of surgical outcomes for atlantoaxial subluxation
Retrospective analysis of surgical outcomes for atlantoaxial subluxation Open
The results of this study showed that the C1/2 fixation technique exhibited effectiveness in terms of neurological recovery. However, there was a high complication rate in surgeries for AAS, especially in the C1/2 fixation. C1 LAM would be…
View article: Hemorrhagic Sudden Onset of Spinal Epidural Angiolipoma
Hemorrhagic Sudden Onset of Spinal Epidural Angiolipoma Open
Angiolipomas are relatively rare benign tumors. Spinal angiolipomas that generally induce slow progressive cord compression are most commonly found in the thoracic region. A 49‐year‐old female with obesity presented with a 1‐week history o…
View article: Spinal Cord Infarction with Aortic Dissection
Spinal Cord Infarction with Aortic Dissection Open
Spinal cord infarction is an uncommon but devastating disorder caused by various conditions. Aortic dissection is a possible etiological factor and is usually associated with severe chest or back pain. We encountered two cases of spinal co…
View article: Intraoperative evaluation using mobile computed tomography in anterior cervical decompression with floating method for massive ossification of the posterior longitudinal ligament
Intraoperative evaluation using mobile computed tomography in anterior cervical decompression with floating method for massive ossification of the posterior longitudinal ligament Open
Intraoperative CT imaging was effective to avoid insufficient decompression following ADF with the floating method for massive OPLL. We also consider that the intraoperative three-dimensional imaging is helpful for providing informative fe…