Plate Fixation of Expansive Open-Door Laminoplasty Decreases the Incidence of Postoperative C5 Palsy.

Study Design: Retrospective study.

Objective: To compare outcomes for plate fixation versus suture suspension in expansive open-door laminoplasty (ELAP) for cervical spondylotic myelopathy (CSM).

Summary Of Background Data: C5 palsy and laminar closure have been reported to occur after ELAP when suture suspension is used to anchor the opened lamina.

Clinical indicators of surgical outcomes after cervical single open-door laminoplasty assessed by the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire.

Study Design: Retrospective cohort study.

Objectives: The old-version JOA score for cervical myelopathy (CM) is an evaluation system performed by medical providers that focuses only on neurological function. The purpose of this study was to evaluate patient-reported outcomes using the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ), and to clarify clinical factors that affect the therapeutic effectiveness for CM.

Stride length of elderly patients with lumbar spinal stenosis: Multi-center study using the Two-Step test.

Background: Short stride length is one of clinical symptoms associated with lumbar spinal stenosis (LSS). Short stride is a risk factor for falls; therefore, identification of factors associated with short stride is critical for fall prevention in LSS patients. Although the Two-Step test can conveniently assess maximal stride length, it has not become widely used; therefore, its data are limited.

Spinal fractures in patients with Diffuse idiopathic skeletal hyperostosis:A nationwide multi-institution survey.

Background: Diffuse idiopathic skeletal hyperostosis (DISH) increases the spine's susceptibility to unstable fractures that can cause neurological deterioration. However, the detail of injury is still unclear. A nationwide multicenter retrospective study was conducted to assess the clinical characteristics and radiographic features of spinal fractures in patients with DISH.

Acute Paraparesis Due to Protrusion of a Disc Following Lateral Interbody Fusion for Degenerative Kyphoscoliosis: A Case Report.

Case: A 74-year-old woman presented with severe trunk deformity. Radiographs revealed severe sagittal and coronal imbalance with spinal canal stenosis at L4 to L5. Anterior cages were placed at L2 to L3, L3 to L4, and L4 to L5.

Modic changes in the cervical spine: Prospective 20-year follow-up study in asymptomatic subjects.

Background: Few studies have characterized the development of Modic changes in the cervical spine over time. We evaluated Modic changes of the cervical spine that developed over a 20-year period in a healthy cohort, and sought to clarify the relationship between Modic changes and the development of clinical symptoms.

Methods: For this multicenter prospective cohort study, we recruited 193 subjects from an original cohort of asymptomatic volunteers who underwent MRI of the cervical spine between 1993 and 1996.

Changes in sagittal alignment after surgical excision of thoracic spinal cord tumors in adults.

Study Design: Retrospective chart audit.

Objectives: This study investigated changes in sagittal alignment in adults after excision of thoracic spinal cord tumors without spinal fixation.

Setting: Single-center study at an academic orthopedic department in Japan.

A 20-year prospective longitudinal MRI study on cervical spine after whiplash injury: Follow-up of a cross-sectional study.

Background: Some patients suffer from long-lasting symptoms after whiplash injury. However, there are few reports on the long-term changes in the cervical spine after whiplash injury using imaging tests. The purpose of this longitudinal study was to determine the changes on MRI of the cervical spine 20 years after whiplash injury, and to examine the relationships between changes in the cervical spine on MRI and changes in related clinical symptoms.

Cartilage repair and inhibition of the progression of cartilage degeneration after transplantation of allogeneic chondrocyte sheets in a nontraumatic early arthritis model.

Introduction: Using a rat model of nontraumatic early arthritis induced by intra-articular administration of low-dose monoiodoacetic acid (MIA), we transplanted allogeneic chondrocyte sheets and examined the effects on tissue repair.

Methods: MIA (0.2 mg/50 μl) was injected into the right knee of 20 male Wistar rats.

Surgical risk stratification based on preoperative risk factors in adult spinal deformity.

Background Context: Corrective surgery for adult spinal deformity (ASD) improves health-related quality of life but has high complication rates. Predicting a patient's risk of perioperative and late postoperative complications is difficult, although several potential risk factors have been reported.

Purpose: To establish an accurate, ASD-specific model for predicting the risk of postoperative complications, based on baseline demographic, radiographic, and surgical invasiveness data in a retrospective case series.

A simple and rapid direct injection method for the determination of glyphosate and AMPA in environmental water samples.

Glyphosate is currently the most widely used herbicide in the world, yet screening of environmental waters for this chemical is limited by the need for specialized derivatization and measurement methods that can be tedious and time-consuming. In this work, we present a novel method for the detection and quantification at trace levels of glyphosate and aminomethylphosphonic acid (AMPA) in environmental water samples. The detection and quantification of the analytes was performed by liquid chromatography (LC) coupled with tandem mass spectrometry (MS/MS).

Association between the Portion Sizes of Traditional Japanese Seasonings-Soy Sauce and Miso-and Blood Pressure: Cross-Sectional Study Using National Health and Nutrition Survey, 2012⁻2016 Data.

While previous studies have reported the association between food portion size and health outcomes, the association between food seasonings and blood pressure (BP) has not been clarified. This study aimed to investigate the association between the portion sizes of traditional Japanese seasonings and BP. Data on 25,738 Japanese participants (10,154 men and 15,584 women) aged ≥20 years registered in the 2012⁻2016 National Health and Nutrition Survey (NHNS) were used for this cross-sectional study.

Predictive model for major complications 2 years after corrective spine surgery for adult spinal deformity.

Purpose: ASD surgery improves a patient's health-related quality of life, but it has a high complication rate. The aim of this study was to create a predictive model for complications after surgical treatment for adult spinal deformity (ASD), using spinal alignment, demographic data, and surgical invasiveness.

Methods: This study included 195 surgically treated ASD patients who were > 50 years old and had 2-year follow-up from multicenter database.

Post-transplant lymphoproliferative disorder of the cauda equina in a kidney transplant recipient.

Introduction: Post-transplant lymphoproliferative disorder (PTLD) is a condition associated with post-transplant immunosuppression that can develop in various organs, including the grafted one. However, it has rarely been reported in nerve tissue. We encountered an unexpected case of PTLD in the cauda equina of a kidney transplant recipient who was being treated with chronic immunosuppressive therapies.

Spinal fractures in patients with diffuse idiopathic skeletal hyperostosis: Clinical characteristics by fracture level.

Background: Diffuse idiopathic skeletal hyperostosis (DISH) makes the spine prone to unstable fractures with neurological deterioration. This study was conducted to assess clinical and radiographic features of spinal fractures in DISH by the level of spinal injury, and to evaluate the optimal treatment for each level.

Methods: A multicenter retrospective study over a 5-year period, including 46 patients (35 males; 11 females) with a mean age of 77.

Treatment for Frailty Does Not Improve Complication Rates in Corrective Surgery for Adult Spinal Deformity.

Study Design: A retrospective multicenter database review of 240 consecutive patients at least 21 years of age (mean 58 ± 17, range 22-79) who underwent surgery for adult spinal deformity (ASD) and were followed at least 2 years.

Objective: To investigate how treatment for frailty affects complications in surgery for ASD.

Summary Of Background Data: Several recent studies have focused on associations between frailty and surgical complications.

Comparison of a new wrist-worn accelerometer with a commonly used triaxial accelerometer under free-living conditions.

Objective: The Life Microscope is a new wristband-based life recorder system that can identify various human movements. We aimed to compare physical activity data captured using the Life Microscope with data from a commonly used accelerometer.

Results: Twenty-nine participants (34.

Impact of lumbar hypolordosis on the incidence of symptomatic postoperative spinal epidural hematoma after decompression surgery for lumbar spinal canal stenosis.

Purpose: Potential associations between radiographic parameters and the incidence of symptomatic postoperative spinal epidural hematoma (PSEH) have not been identified. This study aimed to identify risk factors including radiographic parameters for symptomatic PSEH after posterior decompression surgery for lumbar spinal canal stenosis (LSS).

Methods: We retrospectively reviewed 1007 consecutive patients who underwent lumbar decompression surgery for lumbar spinal canal stenosis (LSS) at our institution.

Dietary patterns among Japanese adults: findings from the National Health and Nutrition Survey, 2012.

Background And Objectives: Recent studies have analyzed dietary patterns to assess overall dietary habits, but there have been no studies of dietary patterns among the contemporary Japanese population nationwide. The objective of this study was to identify dietary patterns based on consumption of food items among Japanese adults, and to examine whether these dietary patterns were associated with nutrient intake, demographic characteristics, and lifestyle factors.

Methods And Study Design: The study population included 25,754 Japanese adults aged 20 years and older registered in the nationwide National Health and Nutrition Survey database in 2012.

Lumbar spinal canal stenosis leads to locomotive syndrome in elderly patients.

Background: Locomotive syndrome is a condition in which the ability to lead a normal life is restricted owing to a dysfunction in one or more of the parts of the musculoskeletal system. Although lumbar spinal canal stenosis (LSS) is considered to cause locomotive syndrome, a detailed assessment of the association between two pathologies has not yet been reported.

Methods: The clinical data of patients aged > 65 years old who planned to undergo surgery for LSS at multiple institutions were prospectively collected from April 2016 to August 2017.

Surgical Outcomes for Drop Body Syndrome in Adult Spinal Deformity.

Study Design: A multicenter retrospective case series of patients treated surgically for adult spinal deformity (ASD).

Objective: The aim of this study was to compare clinical outcomes between propensity score matched ASD patients with or without drop body syndrome (DBS).

Summary Of Background Data: DBS is an extreme primary sagittal-plane deformity often seen in Asian countries.

Profile fluctuation of peripheral blood in advanced melanoma patients treated with nivolumab.

Melanoma is a malignant tumor of the melanocytes with an unfavorable clinical behavior. Nivolumab, a representative anti-programmed death 1 (PD-1) antibody, has recently been used for the treatment of metastatic malignant melanoma. However, there have been few appropriate biomarkers predicting the effect of nivolumab before the administration.

Dietary intake and dinner timing among shift workers in Japan.

Objectives: Shift workers are at an increased risk of diet-related chronic conditions. We aimed to investigate dietary intake and dinner timing among shift workers.

Methods: A questionnaire survey was administered to the employees of 43 companies in Japan between December 2013 and February 2014.