Search results for: Kuniyoshi Abumi

Items from 1 to 20 out of 47 results

article

Coronal Multiplane Reconstructed Computed Tomography Image Determining Lateral Vertebral Notch-Referred Pedicle Screw Entry Point in Subaxial Cervical Spine: A Preclinical Study

Chunyang Wu, Zhongren Huang, Zhimin Pan, Jiaquan Luo, more

World Neurosurgery > 2017 > 103 > C > 322-329

To evaluate feasibility of computed tomography (CT) coronal multiplane reconstruction image (CMRI) to determine subaxial cervical pedicle screw (PS) entry point and guide lateral vertebral notch (LVN)–referred technique for subaxial cervical PS insertion.Cervical CT scans were performed in 40 volunteers. PS entry point was determined by quantitating PS entry point related to LVN on CMRI. Pedicle mediolateral...

article

Correlation analysis between change in thoracic kyphosis and multilevel facetectomy and screw density in main thoracic adolescent idiopathic scoliosis surgery

Hideki Sudo, Yuichiro Abe, Terufumi Kokabu, Manabu Ito, more

The Spine Journal > 2016 > 16 > 9 > 1049-1054

Controversy exists regarding the effects of multilevel facetectomy and screw density on deformity correction, especially thoracic kyphosis (TK) restoration in adolescent idiopathic scoliosis (AIS) surgery.This study aimed to evaluate the effects of multilevel facetectomy and screw density on sagittal plane correction in patients with main thoracic (MT) AIS curve.A retrospective correlation and comparative...

article

Surgical treatment of double thoracic adolescent idiopathic scoliosis with a rigid proximal thoracic curve

Hideki Sudo, Yuichiro Abe, Kuniyoshi Abumi, Norimasa Iwasaki, more

European Spine Journal > 2016 > 25 > 2 > 569-577

Purpose There is limited consensus on the optimal surgical strategy for double thoracic adolescent idiopathic scoliosis (AIS). Recent studies have reported that pedicle screw constructs to maximize scoliosis correction cause further thoracic spine lordosis. The objective of this study was to apply a new surgical technique for double thoracic AIS with rigid proximal thoracic (PT) curves and assess...

article

Cervical spondylotic myelopathy: posterior decompression and pedicle screw fixation

Kuniyoshi Abumi

European Spine Journal > 2015 > 24 > 2 > 186-196

Introduction Posterior decompression by laminoplasty and anterior decompression/fixation have been widely accepted, and they provide sufficient results for cervical spondylotic myelopathy. However, combined procedure of posterior decompression and reconstruction is favorable for some patients accompanying local kyphosis, segmental instability, previously operated conditions on the cervical spine,...

article

Cervical spondylotic myelopathy: an update

Ronald H. M. A. Bartels, Michael G. Fehlings, Kuniyoshi Abumi

European Spine Journal > 2015 > 24 > 2 > 131-131

article

Scoliosis corrective force estimation from the implanted rod deformation using 3D-FEM analysis

Yuichiro Abe, Manabu Ito, Kuniyoshi Abumi, Remel Salmingo, more

Scoliosis and Spinal Disorders > 2015 > 10 > 1 > 1-1

article

Scoliosis corrective force estimation from the implanted rod deformation using 3D-FEM analysis

Yuichiro Abe, Manabu Ito, Kuniyoshi Abumi, Hideki Sudo, more

Scoliosis and Spinal Disorders > 2015 > 10 > 2 > 1-6

Background Improvement of material property in spinal instrumentation has brought better deformity correction in scoliosis surgery in recent years. The increase of mechanical strength in instruments directly means the increase of force, which acts on bone-implant interface during scoliosis surgery. However, the actual correction force during the correction maneuver and safety margin of pull out force...

article

Caspase 3 Silencing Inhibits Biomechanical Overload–Induced Intervertebral Disk Degeneration

Katsuhisa Yamada, Hideki Sudo, Koji Iwasaki, Naoki Sasaki, more

The American Journal of Pathology > 2014 > 184 > 3 > 753-764

Intervertebral disk (IVD) degeneration causes debilitating low back pain in much of the worldwide population. No efficient treatment exists because of an unclear pathogenesis. One characteristic event early in such degeneration is the apoptosis of nucleus pulposus (NP) cells embedded in IVDs. Excessive biomechanical loading may also be a major etiology of IVD degeneration. The present study used in vitro...

article

A multicenter study on accuracy and complications of freehand placement of cervical pedicle screws under lateral fluoroscopy in different pathological conditions: CT-based evaluation of more than 1,000 screws

Yoshihiro Hojo, Manabu Ito, Kota Suda, Itaru Oda, more

European Spine Journal > 2014 > 23 > 10 > 2166-2174

Purpose To conduct a retrospective multicenter study to investigate the accuracy of pedicle screw (PS) placement in the cervical spine by freehand technique and the related complications in various pathological conditions including trauma, rheumatoid arthritis, degenerative conditions and others. Methods 283 patients with 1,065 PSs in the cervical spine who were treated at eight spine centers and...

article

Anterior decompression and strut graft versus posterior decompression and pedicle screw fixation with vertebroplasty for osteoporotic thoracolumbar vertebral collapse with neurologic deficits

Hideki Sudo, Manabu Ito, Kiyoshi Kaneda, Kuniyoshi Abumi, more

The Spine Journal > 2013 > 13 > 12 > 1726-1732

With the increase of the elderly population, osteoporotic vertebral fractures have been frequently reported. Surgical intervention is usually recommended in osteoporotic vertebral collapse with neurologic deficits. However, very few reports on surgical interventions exist.To compare surgical results of anterior and posterior procedures for treating osteoporotic thoracolumbar vertebral collapse with...

article

Severe Fixed Cervical Kyphosis Treated with Circumferential Osteotomy and Pedicle Screw Fixation Using an Anterior-Posterior-Anterior Surgical Sequence

Hiroyuki Yoshihara, Kuniyoshi Abumi, Manabu Ito, Yoshihisa Kotani, more

World Neurosurgery > 2013 > 80 > 5 > 654.e17-654.e21

Surgical treatment for severe circumferentially fixed cervical kyphosis has been challenging. Both anterior and posterior releases are necessary to provide the cervical mobility necessary for fusion in a corrected position.In two case reports, we describe the circumferential osteotomy of anterior-posterior-anterior surgical sequence, and the efficacy of this technique when cervical pedicle screw fixation...

article

A genome-wide sib-pair linkage analysis of ossification of the posterior longitudinal ligament of the spine

Tatsuki Karasugi, Masahiro Nakajima, Katsunori Ikari, Genetic Study Group of Investigation Committee on Ossification of the Spinal Ligaments, more

Journal of Bone and Mineral Metabolism > 2013 > 31 > 2 > 136-143

Ossification of the posterior longitudinal ligament of the spine (OPLL) is a common musculoskeletal disease among people after middle age. The OPLL presents with serious neurological abnormalities due to compression of the spinal cord and nerve roots. The OPLL is caused by genetic and environment factors; however, its etiology and pathogenesis still remain to be elucidated. To determine the susceptibility...

article

Cervical myelopathy resulting from combined ossification of the ligamentum flavum and posterior longitudinal ligament: report of two cases and literature review

Yoshihisa Kotani, Masahiko Takahata, Kuniyoshi Abumi, Manabu Ito, more

The Spine Journal > 2013 > 13 > 1 > e1-e6

In the cervical spine, the combination of ossification of the ligamentum flavum (OLF) and ossification of the posterior longitudinal ligament (OPLL) is rarely seen. There have been only four cases reported in the English literature.We describe two more cases that exhibited cervical myelopathy resulting from the combination of cervical OLF and OPLL and required surgery. A literature review with a comparative...

article

Minimally Invasive Posterolateral Endoscopic Treatment for Spinal Infections

Ken Nagahama, Manabu Ito, Kuniyoshi Abumi

The Spine Journal > 2012 > 12 > 9 Supplement > S129-S130

article

Post-traumatic lumbar subdural hematoma

Hideki Sudo, Kuniyoshi Abumi, Yusuke Menjo, Manabu Ito

The Spine Journal > 2012 > 12 > 8 > 714-715

article

Spinal cord compression by hematoma in the cervical ligamentum flavum: a case report

Yoshihisa Kotani, Hideki Sudo, Kuniyoshi Abumi, Manabu Ito, more

The Spine Journal > 2012 > 12 > 4 > e18-e21

There have been some reports describing hematoma in the thoracic and lumbar ligamentum flavum, but there have been only three reports of hematoma in the cervical ligamentum flavum.We describe another case of the ligamentum flavum hematoma in the cervical spine with a different feature of occurrence that required surgical treatment.Case report.Patient with ligamentum flavum hematoma in the cervical...

article

Perioperative complications of anterior cervical decompression with fusion in patients with ossification of the posterior longitudinal ligament: a retrospective, multi-institutional study

Atsushi Kimura, Atsushi Seichi, Yuichi Hoshino, Masashi Yamazaki, more

Journal of Orthopaedic Science > 2012 > 17 > 6 > 667-672

Background Anterior decompression with fusion (ADF) for patients with cervical ossification of the posterior longitudinal ligament (OPLL) is reportedly associated with a higher incidence of complications than is laminoplasty. However, the frequency of perioperative complications associated with ADF for cervical OPLL has not been fully established. The purpose of this study was to investigate the incidence...

article

Mid-term clinical results of minimally invasive decompression and posterolateral fusion with percutaneous pedicle screws versus conventional approach for degenerative spondylolisthesis with spinal stenosis

Yoshihisa Kotani, Kuniyoshi Abumi, Manabu Ito, Hideki Sudo, more

European Spine Journal > 2012 > 21 > 6 > 1171-1177

Introduction In order to minimize perioperative invasiveness and improve the patients’ functional capacity of daily living, we have performed minimally invasive lumbar decompression and posterolateral fusion (MIS-PLF) with percutaneous pedicle screw fixation for degenerative spondylolisthesis with spinal stenosis. Although several minimally invasive fusion procedures have been reported, no study has...

article

A retrospective study of congenital osseous anomalies at the craniocervical junction treated by occipitocervical plate-rod systems

Xianjun Ding, Kuniyoshi Abumi, Manabu Ito, Hideki Sudo, more

European Spine Journal > 2012 > 21 > 8 > 1580-1589

Purpose To evaluate the effectiveness of posterior occipitocervical reconstruction using the anchors of cervical pedicle screws and plate-rod systems for patients with congenital osseous anomalies at the craniocervical junction. Methods Twenty patients with congenital osseous lesions who underwent posterior occipitocervical fusion using the anchors of cervical pedicle screws and plate-rod systems...

article

Impact of deep extensor muscle-preserving approach on clinical outcome of laminoplasty for cervical spondylotic myelopathy: comparative cohort study

Yoshihisa Kotani, Kuniyoshi Abumi, Manabu Ito, Hideki Sudo, more

European Spine Journal > 2012 > 21 > 8 > 1536-1544

Introduction This study aimed to compare patients undergoing deep extensor muscle-preserving laminoplasty and conventional open-door laminoplasty for the treatment of cervical spondylotic myelopathy (CSM). We specifically assessed axial pain, cervical spine function, and quality of life (QOL) with a minimum follow-up period of 3 years. Patients and methods Ninety patients were divided into two groups...

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Search results for: Kuniyoshi Abumi

Coronal Multiplane Reconstructed Computed Tomography Image Determining Lateral Vertebral Notch-Referred Pedicle Screw Entry Point in Subaxial Cervical Spine: A Preclinical Study

Correlation analysis between change in thoracic kyphosis and multilevel facetectomy and screw density in main thoracic adolescent idiopathic scoliosis surgery

Surgical treatment of double thoracic adolescent idiopathic scoliosis with a rigid proximal thoracic curve

Cervical spondylotic myelopathy: posterior decompression and pedicle screw fixation

Cervical spondylotic myelopathy: an update

Scoliosis corrective force estimation from the implanted rod deformation using 3D-FEM analysis

Scoliosis corrective force estimation from the implanted rod deformation using 3D-FEM analysis

Caspase 3 Silencing Inhibits Biomechanical Overload–Induced Intervertebral Disk Degeneration

A multicenter study on accuracy and complications of freehand placement of cervical pedicle screws under lateral fluoroscopy in different pathological conditions: CT-based evaluation of more than 1,000 screws

Anterior decompression and strut graft versus posterior decompression and pedicle screw fixation with vertebroplasty for osteoporotic thoracolumbar vertebral collapse with neurologic deficits

Severe Fixed Cervical Kyphosis Treated with Circumferential Osteotomy and Pedicle Screw Fixation Using an Anterior-Posterior-Anterior Surgical Sequence

A genome-wide sib-pair linkage analysis of ossification of the posterior longitudinal ligament of the spine

Cervical myelopathy resulting from combined ossification of the ligamentum flavum and posterior longitudinal ligament: report of two cases and literature review

Minimally Invasive Posterolateral Endoscopic Treatment for Spinal Infections

Post-traumatic lumbar subdural hematoma

Spinal cord compression by hematoma in the cervical ligamentum flavum: a case report

Perioperative complications of anterior cervical decompression with fusion in patients with ossification of the posterior longitudinal ligament: a retrospective, multi-institutional study

Mid-term clinical results of minimally invasive decompression and posterolateral fusion with percutaneous pedicle screws versus conventional approach for degenerative spondylolisthesis with spinal stenosis

A retrospective study of congenital osseous anomalies at the craniocervical junction treated by occipitocervical plate-rod systems

Impact of deep extensor muscle-preserving approach on clinical outcome of laminoplasty for cervical spondylotic myelopathy: comparative cohort study

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