Norimasa Iwasaki
Hokkaido University
AnatomyInternal medicineRadiologyBiomedical engineeringSurgeryPathologyMagnetic resonance imagingChemistryOsteoarthritisOsteotomyWristTendonCartilageElbowOrthodonticsRadiographyOrthopedic surgeryMedicineBiologyCell biology
405Publications
43H-index
6,554Citations
Publications 401
Newest
#1Liang Xu (Hokkaido University)H-Index: 2
#2Atsushi Urita (Hokkaido University)H-Index: 8
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 43
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BACKGROUND Ultrapurified alginate (UPAL) gel implantation has been demonstrated as effective in cartilage repair for osteochondral defects; however, cell transplantation within UPAL gels would be required to treat larger defects. HYPOTHESIS The combination of UPAL gel and bone marrow aspirate concentrate (BMAC) would enhance cartilage repair and subchondral bone repair for large osteochondral defects. STUDY DESIGN Controlled laboratory study. METHODS A total of 104 osteochondral defects (1 defec...
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#1Masatake Matsuoka (Hokkaido University)H-Index: 5
#2Tomohiro Onodera (Hokkaido University)H-Index: 16
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 43
view all 8 authors...
PURPOSE The objectives of this study were to clarify whether resection of primary tumor in the extremities for patients with metastatic soft-tissue sarcoma (STS) improves survival, and to clarify patient groups for whom primary tumor resection should be considered. METHODS/PATIENTS Using the surveillance, epidemiology, and end results database, we identified 1453 patients with metastatic STS of the extremities at initial presentation between 1983 and 2016. Of these 1453 patients, 898 patients un...
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#1Masahiro OzakiH-Index: 6
#2Kota SudaH-Index: 11
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 43
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STUDY DESIGN Retrospective chart audit. OBJECTIVES This study aimed to identify conventional routine blood testing biomarkers associated with the progression of intramedullary injured area in patients with spinal cord injury (SCI). SETTING A spinal cord injury center in Hokkaido, Japan. METHODS We retrospectively reviewed 71 consecutive adults with acute SCI who were admitted within 24 h after injury and diagnosed as American Spinal Injury Association Impairment Scale Grade A or B at admission. ...
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#1Gen Matsumae (Hokkaido University)H-Index: 1
#2Tomohiro Shimizu (Hokkaido University)H-Index: 10
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 43
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#1Hideyuki Kobayashi (Hokkaido University)H-Index: 2
#2Ryo Fujita (Hokkaido University)H-Index: 4
Last. Masahiko Takahata (Hokkaido University)H-Index: 29
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Osteomyelitis is characterized by progressive inflammatory bone destruction accompanied by severe pain and disability. However, with the exception of antibiotic therapies, there is no established therapy to protect the bone from infectious osteolysis. The anti-receptor activator of nuclear factor-kB ligand (RANKL) monoclonal antibody (anti-RANKL Ab) is a potential drug based on its proven effectiveness in preventing joint bone erosion in rheumatoid arthritis; however, the efficacy and adverse ef...
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#1Yuichiro Fujieda (Hokkaido University)H-Index: 15
#2Tetsuya HoritaH-Index: 23
Last. Tatsuya Atsumi (Hokkaido University)H-Index: 65
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No evidence has shown the efficacy of Sodium Risedronate (Risedronate) for glucocorticoid-induced osteoporosis (GIO) in patients with Rheumatoid arthritis (RA). The aim of this study was to explore...
1 CitationsSource
#1Makoto Motomiya (Hokkaido University)H-Index: 9
#2Naoki Nishimoto (Hokkaido University)H-Index: 7
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 43
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Objectives: We aimed to investigate patient characteristics affecting their knowledge of surgical reconstruction for rheumatoid hand and wrist deformities, and to investigate such characteristics affecting their hope of receiving hand surgery if patients with rheumatoid arthritis (RA) knew surgical reconstruction options.Methods: We carried out a questionnaire survey for all patients with RA who came to our outpatient department of rheumatology. Multivariate logistic regression analysis was perf...
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#1Hiroki Hamano (NTT Medical Center)
#2Daisuke Kawamura (Hokkaido University)H-Index: 5
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 43
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#1Taku EbataH-Index: 2
Last. Norimasa IwasakiH-Index: 43
view all 13 authors...
Summary null Synovial macrophages that are activated by cartilage fragments initiate synovitis, a condition that promotes hypertrophic changes in chondrocytes leading to cartilage degeneration in OA. In this study, we analyzed the molecular response of chondrocytes under condition of this type of stimulation to identify a molecular therapeutic target. Stimulated macrophages promoted hypertrophic changes in chondrocytes resulting in production of matrix-degrading enzymes of cartilage. Among the t...
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#1Tsunehiko KonomiH-Index: 11
#2Kota SudaH-Index: 11
Last. Masaya Nakamura (Keio: Keio University)H-Index: 70
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A retrospective observational study. To elucidate predictive clinical factors associated with irreversible complete motor paralysis following traumatic cervical spinal cord injury (CSCI). Hokkaido Spinal Cord Injury Center, Japan. A consecutive series of 447 traumatic CSCI persons were eligible for this study. Individuals with complete motor paralysis at admission were selected and divided into two groups according to the motor functional outcomes at discharge. Initial findings in magnetic reson...
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