Norimasa Iwasaki
Hokkaido University
AnatomyInternal medicineRadiologyBiomedical engineeringSurgeryPathologyMagnetic resonance imagingChemistryOsteoarthritisOsteotomyWristTendonCartilageElbowOrthodonticsRadiographyOrthopedic surgeryMedicineBiologyCell biology
410Publications
45H-index
6,619Citations
Publications 433
Newest
#1Shunichi Yokota (Hokkaido University)H-Index: 1
#2Gen Matsumae (Hokkaido University)H-Index: 2
Last. Masahiko Takahata (Hokkaido University)H-Index: 30
view all 13 authors...
Abstract null null A growing body of evidence suggests that immune factors that regulate osteoclast differentiation and bone resorption might be promising therapeutic agents for the treatment of osteoporosis. The expression of CLCF1, an immune cell-derived molecule, has been reported to be reduced in patients with postmenopausal osteoporosis. This suggests that it may be involved in bone remodeling. Thus, we explored the functional role of CLCF1 in osteoclastogenesis and bone loss associated wit...
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#1Kentaro HomanH-Index: 7
Last. Norimasa IwasakiH-Index: 45
view all 5 authors...
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#1Ryo Itoga (Hokkaido University)
#2Masatake Matsuoka (Hokkaido University)H-Index: 5
Last. Eiji Kondo (Hokkaido University)H-Index: 28
view all 11 authors...
BACKGROUND/AIM Brain metastasis is a rare condition among patients with soft tissue sarcoma (STS), and its precise incidence remains unclear. The aim of this study was to investigate which patients should be screened for brain metastasis. PATIENTS AND METHODS We identified all patients with STS diagnosed between 2010 and 2015 in the SEER database. Incidence of brain metastasis at initial presentation and higher incidence of brain metastasis by histological subtype were investigated. In addition,...
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#1Takuma Kaibara (Hokkaido University)H-Index: 2
#2Lei Wang (Hokkaido University)H-Index: 19
Last. Kazunori Yasuda (Hokkaido University)H-Index: 70
view all 9 authors...
Recently, we have developed a hydroxyapatite (HAp)-hybridized double-network (DN) hydrogel (HAp/DN gel), which can robustly bond to the bone tissue in the living body. The purpose of this study is to clarify whether the HAp/DN gel surface can differentiate the bone marrow-derived mesenchymal stem cells (MSCs) to osteogenic cells. We used the MSCs which were harvested from the rabbit bone marrow and cultured on the polystyrene (PS) dish using the autogenous serum-supplemented medium. First, we co...
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#1Mitsutoshi Ota (Hokkaido University)
#2Atsushi Urita (Dokkyo Medical University)
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 45
view all 4 authors...
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#1Tsutomu Endo (Hokkaido University)H-Index: 6
#2Yoshinao Koike (Hokkaido University)H-Index: 3
Last. Masahiko Takahata (Hokkaido University)H-Index: 30
view all 16 authors...
Study Design:Retrospective cross-sectional study.Objectives:There is insufficient data on the clinical features of ossification of the ligamentum flavum (OLF) of the thoracic spine and the risk of ...
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#7Eiji Kondo (Hokkaido University)H-Index: 1
The aim of this study was to evaluate the joint contact area of the dominant side and that of the non-dominant side without valgus instability in symptomatic pitchers. Ten symptomatic elbow medial ulnar collateral ligament (UCL) deficient baseball pitchers participated in this study. Computed tomography (CT) data from the dominant and non-dominant elbows were obtained with and without elbow valgus stress. The CT imaging data of each elbow joint were reconstructed using a 3D reconstruction softwa...
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#1Jun Yamaguchi (Jikei University School of Medicine)
#2Kazunori YasudaH-Index: 70
Last. Tomonori YagiH-Index: 11
view all 10 authors...
BACKGROUND Post-arthroscopic osteonecrosis of the knee (PAONK) is a rare condition. No studies have analyzed the relationship between the meniscus extrusion and PAONK. The purpose of this retrospective study is to test a hypothesis that the degree of the medial meniscus (MM) extrusion might be significantly greater in the knees with PAONK than in the matched control knees both before and after the meniscectomy. METHODS Ten knees with PAONK were detected out of a total of 876 knees which had unde...
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#1Makoto Motomiya (Hokkaido University)H-Index: 10
#2Naoya Watanabe (Hokkaido University)H-Index: 2
Last. Norimasa Iwasaki (Hokkaido University)H-Index: 45
view all 6 authors...
Summary Purpose : Although many studies have investigated the optimal anastomotic procedure for the end-to-side (ETS) procedure with a free flap, no study has focused on the size of the arteriotomy. Some surgeons have recently described the effectiveness of ETS with wide arteriotomy, but the postoperative haemodynamics remains unclear for free flaps created using this technique. The aim of this study was to use ultrasonography to evaluate the postoperative blood flow distribution after ETS with ...
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#1Tomomaya Yamamoto (Hokkaido University)H-Index: 10
#2Tomoka Hasegawa (Hokkaido University)H-Index: 20
Last. Keisuke Kubota (Hokkaido University)
view all 17 authors...
Modeling, the changes of bone size and shape, often takes place at the developmental stages, whereas bone remodeling-replacing old bone with new bone-predominantly occurs in adults. Unlike bone remodeling, bone formation induced by modeling i.e., minimodeling (microscopic modeling in cancellous bone) is independent of osteoclastic bone resorption. Although recently-developed drugs for osteoporotic treatment could induce minimodeling-based bone formation in addition to remodeling-based bone forma...
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