Koichi Nakagawa

ORCID: 0000-0001-7859-4310
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About
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Research Areas
  • Spine and Intervertebral Disc Pathology
  • Total Knee Arthroplasty Outcomes
  • Orthopaedic implants and arthroplasty
  • Osteoarthritis Treatment and Mechanisms
  • Musculoskeletal pain and rehabilitation
  • Spinal Fractures and Fixation Techniques
  • Knee injuries and reconstruction techniques
  • Orthopedic Infections and Treatments
  • Rheumatoid Arthritis Research and Therapies
  • Scoliosis diagnosis and treatment
  • Advanced Thermodynamics and Statistical Mechanics
  • Cosmology and Gravitation Theories
  • Quantum, superfluid, helium dynamics
  • Lower Extremity Biomechanics and Pathologies
  • Musculoskeletal synovial abnormalities and treatments
  • Geophysical Methods and Applications
  • Black Holes and Theoretical Physics
  • Cold Atom Physics and Bose-Einstein Condensates
  • Orthopedic Surgery and Rehabilitation
  • Geotechnical Engineering and Underground Structures
  • Inorganic and Organometallic Chemistry
  • Shoulder Injury and Treatment
  • Spinal Hematomas and Complications
  • Autoimmune and Inflammatory Disorders Research
  • Seismic Waves and Analysis

Toho University Medical Center Sakura Hospital
2016-2025

Toho University
2016-2025

Kindai University Hospital
2018-2025

Asahi General Hospital
2023

Chiba University Hospital
2023

Chiba University
2002-2023

Japanese Red Cross Narita Hospital
2023

St. Marianna University School of Medicine
2023

Kitasato University
2023

Toho University Omori Medical Center
2021

Abstract Molecular motions in poly(vinylidene fluoride) were studied by dielectric measurements. Of the three relaxation processes, α a and c studied. The was attributed to molecular amorphous regions crystalline their surfaces. time magnitude of absorption analyzed on basis Adam‐Gibbs theory temperature dependence size cooperatively rearranging region. As result it concluded that structure crystal form II holds locally, even regions. for analysed two‐site model. It is attributable not only...

10.1002/pol.1973.180110804 article EN Journal of Polymer Science Polymer Physics Edition 1973-08-01

The importance of pelvic incidence-lumbar lordosis (PI-LL: PI minus LL) mismatch is emphasized in long-segment fusion for adult spinal deformity; however, there are few studies evaluating the influence PI-LL on surgical outcomes after short-segment fusion. In this study, we have examined effects lumbar intervertebral degenerative diseases. Patients with disease treated by (1 or 2 levels) transforaminal interbody were divided into Group A (PI-LL ≤ 10°: n = 22) and B ≥ 11°: 30). Pre-and...

10.1186/s12891-015-0676-1 article EN cc-by BMC Musculoskeletal Disorders 2015-08-19

We examined 39 patients (45 knees) who had undergone an Elmslie-Trillat procedure for recurrent or habitual dislocation of the patella with a follow-up more than ten years. The mean age at time surgery was 18.4 years; 161 months (120 to 238). Using Fulkerson's functional knee score, 41 knees (91%) excellent good result 45 months, and this maintained in 29 (64%) final review. main cause deterioration clinical results onset worsening patellofemoral joint pain, not patellar instability.

10.1302/0301-620x.84b6.12804 article EN Journal of Bone and Joint Surgery - British Volume 2002-08-01

Because the authors encountered 4 cases of hardware migration following transforaminal lumbar interbody fusion, a retrospective study was conducted to identify factors influencing posterior fusion cages.Patients with degenerative disc disease (125 individuals; 144 levels) were treated using and followed for 12-33 months. Medical records pre- postoperative radiographs reviewed, incidence cage analyzed.Postoperative found in patients at or before 3 all cages that migrated postoperatively...

10.3171/2010.3.spine09590 article EN Journal of Neurosurgery Spine 2010-09-01

Object Many surgeons currently prefer to use transforaminal lumbar interbody fusion (TLIF), placing 1 unilateral pedicle screw (PS) and cage. However, no study has examined whether fixation improves surgical outcome. The authors conducted a prospective randomized controlled trial with minimum 2-year follow-up analyze TLIF outcomes for 2 techniques: placement of PS cage compared bilateral PSs cages. Methods Fifty patients degenerative spondylolisthesis undergoing single-level were randomly...

10.3171/2012.5.spine111044 article EN Journal of Neurosurgery Spine 2012-06-15

Abstract Lumbar spondylolysis generally occurs in adolescent athletes. Bony union can be expected with conservative treatment, however, the fracture does not heal some cases. When becomes a pseudoarthrosis, patients have potential to develop isthmic spondylolisthesis. A cross-sectional study was performed determine incidence of and spondylolisthesis, elucidate when how often spondylolisthesis or without spondylolysis. Patients undergoing computed tomography (CT) scans abdominal lumbar...

10.1038/s41598-020-63784-0 article EN cc-by Scientific Reports 2020-04-21

Background: Platelet-rich plasma is a fraction of in which platelets are concentrated. It reported to represent source multiple growth factors that promote tissue repair. In anticipation the eventual testing platelet-rich anterior cruciate ligament (ACL)-deficient patients, we examined effect autologous on human ACL cell function vitro. Methods: Fresh blood and remnants were obtained from four patients who underwent reconstruction surgery. Platelet-poor prepared samples. The concentrations...

10.2106/jbjs.i.01158 article EN Journal of Bone and Joint Surgery 2010-12-01

Because we have a clinical impression that elderly patients low back pain while in motion and standing, but less when sitting, investigate characteristics of nonspecific (NSLBP), using new detailed visual analog scale (VAS) scoring system. One hundred eighty-nine with NSLBP were divided into an group (≥65 years old, n = 56) young (<65 133). Low was evaluated by traditional VAS system, the Oswestry Disability Index (ODI), system which is independently three different postural situations (in...

10.1155/2012/680496 article EN cc-by Pain Research and Treatment 2012-11-18

Nerve growth factor (NGF) has an important role in the generation of discogenic pain. We hypothesized that annular rupture is a trigger for pain through action NGF. In this study, protein levels NGF discs from patients with disc herniation were examined and compared those other lumbar degenerative diseases.Patients (n = 55) disease treated by surgery included. Nucleus pulposus tissue (or herniated tissue) was surgically removed homogenized; quantified using enzyme-linked immunosorbent assay...

10.1186/ar4674 article EN cc-by Arthritis Research & Therapy 2014-07-28

A soil testing system for measuring wave propagation through soils using a pulse transmission method has been developed. By mounting very sensitive P and S -transducers in the cap pedestal of triaxial device, can even detect strongly attenuated waves that propagate dry sand. In addition, forms during consolidation undrained compression tests be used to investigate process structure change deformation. The measured velocities are compared with results obtained resonant column in-situ velocity...

10.1061/(asce)0733-9410(1996)122:4(302) article EN Journal of Geotechnical Engineering 1996-04-01

A kinematically aligned (KA) total knee arthroplasty (TKA) is expected to improve patient satisfaction, but its effect remains controversial. We investigated differences in patient-reported outcomes (PROs) between KA and non-KA TKAs using an implant that reproduces anatomical geometry. for varus deformity were performed consecutive 129 patients (149 knees) via a measured resection technique with conventional instruments. The femorotibial angle (FTA), hip-knee-ankle (HKAA), the joint line...

10.1186/s13018-018-1030-8 article EN cc-by Journal of Orthopaedic Surgery and Research 2018-12-01

Objectives. Reactive oxygen species (ROS) are considered to be involved in the pathobiology of rheumatoid arthritis (RA); however, their association with disease activity has not been elucidated. In this study, we measured reactive metabolites (ROM) patients RA using a new Free Radical Analytical System and determined clinical parameters associated ROM. Methods. One hundred fifty-two 80 diabetes mellitus (DM) were included observational study. To measure ROM, d-ROM test was performed on...

10.3109/14397595.2014.891495 article EN Modern Rheumatology 2014-03-26

Abstract Background Several authors have reported favorable results in low back pain (LBP) for patients with lumbar disc herniation (LDH) treated discectomy. However, detailed changes over time the characteristics and location of LBP before after discectomy LDH remain unclear. To clarify these points, we conducted an observational study to determine LDH, using a visual analog scale (VAS) bilaterally. Methods We included 65 by this study. A VAS was administered patient under 3 different...

10.1186/s12891-021-04015-z article EN cc-by BMC Musculoskeletal Disorders 2021-02-11

ABSTRACT Introduction This study assesses the effect of radial extracorporeal shock wave (rESW) exposure on neuromuscular transmission and junction (NMJ) morphology. Methods We applied 2,000 rESWs at 0.18 mJ/mm 2 a frequency 15 H z to right calf male rats, measured compound muscle action potential (CMAP), examined NMJ morphology using electron microscopy. Left muscles were used as controls. Results rESW significantly reduced CMAP amplitude without delayed latency in exposed compared with All...

10.1002/mus.25754 article EN Muscle & Nerve 2017-07-31

Unilateral laminectomy for bilateral decompression (ULBD) lumbar spinal stenosis (LSS) is a less invasive technique compared to conventional laminectomy. Recently, several authors have reported favorable results of low back pain (LBP) in patients LSS treated with ULBD. However, the detailed changes and localization LBP before after ULBD remain unclear. Furthermore, unsymmetrical invasion para-spinal muscle facet joint may result residual symptoms. To clarify these points, we conducted an...

10.1186/s12891-019-2475-6 article EN cc-by BMC Musculoskeletal Disorders 2019-03-04

SAPHO syndrome is a rare inflammatory osteoarticular disorder, which includes autoimmune diseases such as pustulotic arthro-osteitis, bowel disease-associated spondyloarthritis, and psoriatic arthritis. There are few reports on the treatment of that presents with bone destruction in spine. We present case adalimumab (ADA) was administered to treat lumbar vertebral endplates caused by syndrome. The patient woman her 20s who referred our hospital complaints low back pain; acne face, anterior...

10.1093/mrcr/rxaf013 article EN Modern Rheumatology Case Reports 2025-03-06

Predicting postoperative clinical outcomes from preoperative physical factors of patients undergoing total knee arthroplasty (TKA) would be useful. This study aimed to investigate the association between and outcomes. included 119 patients. The 1-year were collected assessed. Physical age, sex, body mass index, skeletal range motion, 5-m walk time, Timed Up-and-Go (TUG) test result. Postoperative evaluated using a sum symptoms, pain, activities daily living, quality life subscales Knee...

10.2490/prm.20250013 article EN Progress in Rehabilitation Medicine 2025-01-01
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