A5044031301- Spine and Intervertebral Disc Pathology
- Spinal Fractures and Fixation Techniques
- Scoliosis diagnosis and treatment
- Cervical and Thoracic Myelopathy
- Pelvic and Acetabular Injuries
- Musculoskeletal pain and rehabilitation
- Medical Imaging and Analysis
- Spinal Hematomas and Complications
- Hip disorders and treatments
- Orthopaedic implants and arthroplasty
- Spinal Dysraphism and Malformations
- Anesthesia and Pain Management
- Orthopedic Surgery and Rehabilitation
- Meningioma and schwannoma management
- Glioma Diagnosis and Treatment
- Bone fractures and treatments
- Infectious Diseases and Tuberculosis
- Spinal Cord Injury Research
- Shoulder Injury and Treatment
- Animal Nutrition and Physiology
- Surgical site infection prevention
- Frailty in Older Adults
- Shoulder and Clavicle Injuries
- Neurogenetic and Muscular Disorders Research
- Neurofibromatosis and Schwannoma Cases
Nagoya University
1995-2025
Konan Kosei Hospital
2016-2025
Osaka University
2014
The University of Tokyo
2014
Rakuwakai Otowa Hospital
2014
Johns Hopkins University
2014
Nagano Red Cross Hospital
2011
Chubu Rosai Hospital
2010
Nagoya University Hospital
2008
Showa General Hospital
2004
Objective: This multicenter study aimed to evaluate the impact of paravertebral muscles (PVMs) degeneration, particularly fat infiltration, on preoperative sagittal imbalance, and postoperative complications alignment change in patients with adult spinal deformity (ASD).Methods: A retrospective analysis was conducted 454 who underwent ASD surgery across 5 institutions. Patients were classified into 2 groups based paraspinal muscle infiltration MRI: those significant (FI-PVM(+)) minimal or no...
Twenty volunteers and 20 patients with no prior spine surgery had two standing lateral radiographs taken, on the average, 66 months apart 2 weeks apart, respectively.To first determine reliability of measurement techniques used, then longitudinal variation between for sagittal spinopelvic alignments measured in stable populations, one manifesting back symptoms (volunteers) other showing changes (patients). Pelvic morphology also was assessed quantitatively, significant correlations...
The aim of this study was to retrospectively evaluate the reliability and accuracy cervical pedicle screw (CPS) placement using an intraoperative, full-rotation, 3D image (O-arm)-based navigation system assess advantages disadvantages system.The involved 21 consecutive patients undergoing posterior stabilization surgery spine between April December 2009. patients, in whom 108 CPSs had been inserted, underwent based on intraoperative imaging O-arm system. Cervical positions were classified...
Object The authors investigated the outcome of intramedullary spinal cord tumor surgery, focusing on effect preoperative neurological status postoperative mobility and extent excision guided by intraoperative monitoring prospectively. Methods Intramedullary surgery was performed in 131 patients between 1997 2007. compared pre- examined type 106 these patients. A modified McCormick Scale (Grades I–V) used to assess ambulatory ability (I = normal ambulation; II mild motor sensory deficit,...
Object Postoperative C-5 palsy is a significant complication resulting from cervical decompression procedures. Moreover, when degenerative diseases are treated with combination of and posterior instrumented fusion, patients at increased risk for palsy. However, the clinical radiological features this condition remain unclear. Therefore, purpose study was to clarify factors developing postoperative Methods Eighty-four (mean age 60.1 years) who had undergone fusion using pedicle screws treat...
The purpose of this study is to examine trends in spine surgeries at ten facilities over 15 years, and analyze relationships with the number surgeons these facilities. subjects were patients who underwent surgery from 2003 2017. Data collected every year via a questionnaire designed obtain clinicopathological surgical information. There 37,601 (60.2% male) recorded registry 9 Nagoya Spine Group (NSG) between 2017, an increase annual by 2.4 times years. On other hand, has increased just under...
Object The authors performed a retrospective clinical study to evaluate the feasibility and accuracy of cervical pedicle screw (CPS) placement using 3D fluoroscopy-based navigation (3D FN). Methods involved 62 consecutive patients undergoing posterior stabilization spine between 2003 2008. Thirty (126 screws) were treated conventional techniques (CVTs) with lateral fluoroscopic view, whereas 32 (150 FN. Screw positions classified into 4 grades based on wall perforations observed...
The cervical pedicle screw (PS) provides strong stabilization but poses a potential risk to the neurovascular system, which may be catastrophic. In particular, vertebrae with degenerative changes complicate process of insertion, and PS misplacement subsequent complications are more frequent. purpose this study was evaluate peri- postoperative fixation for nontraumatic lesions determine factors each complication.Eighty-four patients who underwent were independently reviewed identify...
A retrospective clinical study with a long-term follow-up in single facility.The purpose of this is to compare bone union rate between autologous iliac crest graft and local patients treated by posterior lumbar interbody fusion (PLIF) using carbon cage for single-level fusion.Recently, number authors have reported on grafting that obtained from laminectomy, indicated the achieved similar grafting. However, there no report comparing rates detailed progression.The subjects were 101 whose...
Retrospective clinical study.To investigate adjacent segment degeneration (ASD) at 5 years after L4/5 posterior lumbar interbody fusion with pedicle screw instrumentation and decompression surgery using plain radiographs, computed tomography (CT), magnetic resonance imaging (MRI), the evaluation of annual changes on MRI.Methods have been inconsistent among studies ASD. There is no report that ASD in spine same level thoroughly evaluated CT, MRI changes, impact procedures.ASD was 52 patients....
Retrospective comparative study.To compare the surgical results of anterior and posterior combined surgery (AP) fixation with vertebroplasty (VP) for treating osteoporotic delayed vertebral collapse.The optimal treatment collapse has been controversial. Because aged patients' numerous comorbid medical complications frequent instrumentation failure secondary to osteoporosis, it is challenging surgeons manage collapse. In spite this, there have few reports comparing results.A total 93 patients...
Retrospective analysis of a prospectively database.To identify factors associated with prolonged length stay (LOS) in posterior /transforaminal lumbar interbody fusion (PLIF/TLIF).The subjects were patients who underwent PLIF/TLIF at 10 facilities from 2012 to 2014. A total 1168 such mean age 65.9 ± 12.5 years (range 18-87 years) identified the database. Operations PLIF (n = 675), TLIF 443), minimally invasive surgery (MIS)-PLIF 22), and MIS-TLIF 32). Age, gender, body mass index, ambulatory...
Abstract Meningiomas are benign tumors that treated surgically. Local recurrence is likely if the dura preserved, and en bloc tumor resection (Simpson grade I) recommended. In some cases cauterized preserved after II). The purpose of this study was performed to analyze clinical features prognostic factors associated with spinal meningioma, identify most effective surgical treatment. subjects were 116 patients (22 males, 94 females) meningioma who underwent surgery at seven NSG centers...
Purpose: To explore the clinical outcomes associated with screw loosening after S2 alar-iliac (SAI) fixation for adult spinal deformity (ASD). Overview of literature: SAI is widely used in ASD corrective surgery; despite biomechanical advantages this screw, complications such as remain a significant concern. Methods: We retrospectively reviewed 27 patients undergoing surgery using distal point at single institution between February 2013 and 2018. Patients were divided into non-loosening (N)...
The influence of the pathologic state hip joint on total sagittal alignment spine was investigated in patients with congenital dislocation retrospectivelyThe purpose this study to analyze and clinical symptoms bilateral dislocation. SUMMARY OF BACKGROUND DATA: Abnormality causes abnormal curvature induces lumbago or lower leg pain. However, there have been no reports spine.A 9 (8 females 1 male) were analyzed. Their average age 57 years (range, 46-68 years). We measured thoracic kyphosis...
Object The purpose of this study was to evaluate the effect a fixed atlantoaxial angle on subaxial sagittal alignment, and that fixation adjacent-segment motion degeneration. Methods authors retrospectively reviewed 65 patients in whom instability treated with by C-1 lateral mass C-2 pedicle screw (30 patients, Goel-Harms [GH] group) or combination transarticular posterior wiring (35 Magerl-Brooks [MB] group). Angles Oc–C1, C1–2, C2–3, C2–7 were determined based an upright radiograph...