Ryosuke Hirota
A5042175634- Spinal Cord Injury Research
- Spine and Intervertebral Disc Pathology
- Spinal Fractures and Fixation Techniques
- Cervical and Thoracic Myelopathy
- Spinal Dysraphism and Malformations
- Trauma Management and Diagnosis
- Management of metastatic bone disease
- Musculoskeletal pain and rehabilitation
- Mesenchymal stem cell research
- Scoliosis diagnosis and treatment
- Dermatological and Skeletal Disorders
- Stroke Rehabilitation and Recovery
- Hip disorders and treatments
- Pelvic and Acetabular Injuries
- Cerebral Palsy and Movement Disorders
- Peripheral Nerve Disorders
- Intensive Care Unit Cognitive Disorders
- Extracellular vesicles in disease
- Spondyloarthritis Studies and Treatments
- Balance, Gait, and Falls Prevention
- Artificial Intelligence in Healthcare and Education
- Cancer Diagnosis and Treatment
- Osteoarthritis Treatment and Mechanisms
- Meningioma and schwannoma management
- Nerve injury and regeneration
Sapporo Medical University
2021-2025
Yale University
2024
VA Connecticut Healthcare System
2024
Sapporo University
2024
Hokkaido University
2024
Abstract This retrospective cohort study established malnutrition’s impact on mortality and neurological recovery of older patients with cervical spinal cord injury (SCI). It included aged ≥ 65 years traumatic SCI treated conservatively or surgically. The Geriatric Nutritional Risk Index was calculated to assess nutritional-related risk. Overall, 789 (mean follow-up: 20.1 months) were examined 47 had major risks admission. One-year rate, median survival time, recovery, activities daily...
Retrospective Cohort Study.The purpose of this study was to investigate the prognosis respiratory function in elderly patients with cervical spinal cord injury (SCI) and identify predictive factors.We included 1353 cases SCI collected from 78 institutions Japan. Patients who required early tracheostomy ventilator management those developed complications were defined as disability group. Patients' background characteristics, mechanism, form, neurological disability, complications, treatment...
The safety, feasibility, and potential functional improvement following the intravenous infusion of mesenchymal stem cells (MSCs) were investigated in patients with chronic severe spinal cord injury (SCI).
Abstract Background Cancer treatment has recently evolved due to the advances in comprehensive therapies, including chemotherapy and radiotherapy. The aspect of cancer-related bone metastasis undergone a paradigm shift with transformation orthopedic interventions for spinal metastasis. We performed this retrospective observational study investigate changes patient status metastatic spine-tumor over past decade. Methods included 186 patients (122 men 64 women; mean age: 67.6 years) who were...
Background and Objectives: Percutaneous pedicle screws were first introduced in 2001, soon becoming the cornerstone of minimally invasive spinal stabilization. Use procedure allowed adequate reduction stabilization injuries, even severely injured patients. This decreased bleeding shortened surgical time, thereby optimizing outcomes; however, postoperative correction loss kyphosis still occurred some cases. Thus, we investigated cases percutaneous posterior fixation for thoracolumbar injury...
The number of elderly patients with cervical trauma is increasing. Such are considered to be at high risk for delirium, which an acute neuropsychological disorder that reduces the patient’s capacity interact their environment due impairments in cognition. This study aimed establish a score predicts delirium SCI and/or fracture regardless treatment type. retrospective cohort included 1512 aged ≥65 years fracture. factors according type (surgical or conservative) were calculated using...
Study design Prospective single-center observational study. Objective To investigate the effects and limitations of self-motor-control exercise in patients with chronic low back pain. Summary background data Although therapy physical have been shown to be effective treating pain, these therapies are often discontinued due patients’ non-compliance, their effectiveness cannot fully demonstrated. Methods Fifteen no apparent organic disease, who had symptomatic for at least three months, could...
This study is nationwide retrospective multi-center to investigate the incidence and characteristics of blunt cerebrovascular injury (BCVI) in elderly Japanese patients with traumatic cervical spine injuries (CSI) including spinal cord (SCI) without major bone injury. The enrolled 1512 (average age: 75.8 ± 6.9 years; 1007 males, 505 females) from 33 institutions, 391 (26%) participants had digital subtraction angiography and/or computed tomography angiography. Fifty-three were diagnosed as...
Diffuse idiopathic skeletal hyperostosis (DISH) is a noninflammatory spondyloarthropathy characterized by ectopic calcification of spinal cord tissue. Its etiology possibly polygenic. However, its pathogenesis and systemic effects remain unclear. Recent studies have reported high prevalence DISH in heart failure patients. The authors investigated how the incidence severity are associated with vascular occurrence cardiovascular events. In this retrospective chart review study, 500 patients...
This is a retrospective analysis of prospectively collected single-center observational data. The aim to evaluate atrophy and fatty degeneration rates cervical spinal muscles in proximal spondylotic amyotrophy (PCSA).
Study Design Retrospective study. Objectives To investigate the impact of diabetes mellitus on neurological recovery and determine relationship between moderate-severe in patients with cervical spinal cord injury (CSCI) without bone injury. Methods A retrospective study was conducted 389 consecutive aged ≥65 years CSCI across 33 medical institutes. The were divided into a nondiabetic group (n = 270) diabetic 119). Neurological outcomes compared two groups through propensity score matching....
Study Design: Retrospective analysis of prospectively collected observational data. Objective: This study aimed to evaluate the slippage, sagittal alignment, and range motion (ROM) after selective laminectomy (SL) in patients who had cervical spondylotic myelopathy (CSM) with degenerative spondylolisthesis (DS). Summary Background Data: Clinical outcomes have been reported for both decompression fusion surgeries DS lumbar spine. However, only a few reports examined spine spondylolisthesis....
To evaluate segmental mobility with degenerative lumbar spondylolisthesis (DLS), upright lateral flexion-extension radiographs (FE) are widely used. However, some authors have described that a combination of in the standing position and supine sagittal image (SS) reveal more than FE. The purpose this study was to investigate optimal method for evaluating DLS.We included 92 consecutive Japanese patients diagnosed DLS. Sagittal translation (ST) determined by FE SS were compared. Pathological...