Details of a Researcher - Matsumoto, Morio

Papers - Matsumoto, Morio

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Biocompatibility of hydroxyapatite films formed on Ti matal by a simple urea and urease treatment

Nozaki Jun, Aizawa Mamoru, Uchida Hiroshi, Itatani Kiyoshi, Suemasu Hiroshi, Nozue Akira, Okada Isao, Matsumoto Morio, Matsumoto Hideo, Toyama Yoshiaki

Key Engineering Materials 240 603-606 2003

Research paper (scientific journal), Joint Work

Development and biological evaluation of apatite fibre scaffolds with large pore size and high porosity for bone regeneration

Aizawa Mamoru, Uchida Hiroshi, Itatani Kiyoshi, Okada Isao, Matsumoto Morio, Morisue Hikaru, Matsumoto Hideo, Toyama Yoshiaki

Key engineering materials 240 647-650 2003

Research paper (scientific journal), Joint Work

Development and biological evaluation of apatite fibre scaffolds with large pore size and high porosity for bone regeneration

Aizawa Mamoru, Shinoda Hiroki, Uchida Hiroshi, Itatani Kiyoshi, Okada Isao, Matsumoto Morio, Morisue Hikaru, Matsumoto Hideo, Toyama Yoshiaki

Key Engineering Materials 240-242 647 - 650 2003

ISSN 1013-9826

Novel scaffolds have been developed from single-crystal apatite fibres synthesized by a homogeneous precipitation method using urea. The resulting apatite fibre scaffolds have large pores with diameters of 110-250 μm and high porosities of 98-99%. The scaffolds were biologically evaluated using two kinds of cells, osteoblast cells (MC3T3-E1) and rat bone marrow cells. In both cases, the cells cultured in the scaffolds showed excellent cellular response, such as good cell proliferation and enhanced differentiation into osteoblasts. We conclude that such scaffolds with high porosity and large pore size may be effective as the matrix of tissue engineered structures in order to promote regeneration of bone.

Biocompatibility of hydroxyapatite films formed on Ti metal by a simple urea and urease treatment

Nozaki J., Aizawa M., Uchida H., Itatani K., Suemasu H., Nozue A., Okada I., Matsumoto M., Matsumoto H., Toyama Y.

Key Engineering Materials 240-242 603 - 606 2003

ISSN 1013-9826

HAp films with good adhesive property were formed by a simple surface treatment utilizing an enzyme reaction of urea with urease. The resulting coating layer consisted of carbonate-containing HAp with poor crystallinity. The in vitro evaluation using osteoblastic cells showed that HAp-coated Ti substrate had a good cellular response, such as cell proliferation and differentiation into osteoblast. From the results of in vivo evaluation using rabbit models, the HAp-coated Ti substrate directly bonded to bones to form large amount of new bone around implant. It has been found from both the in vitro and in vivo evaluations that the present HAp-coated Ti substrate has excellent biocompatibility.

Segmental motor paralysis after expansive open-door laminoplasty

Chiba Kazuhiro, Toyama Yoshiaki, Matsumoto Morio, Maruiwa Hirofumi, Watanabe Masahiko, Hirabayashi Kiyoshi

Spine 27 ( 19 ) 2108 - 2115 2002.10

ISSN 0362-2436

Study Design. A retrospective study was conducted to investigate patients in whom segmental motor paralysis developed after expansive open-door laminoplasty for cervical myelopathy. Objective. To propose the involvement of the spinal cord as a possible mechanism in the development of segmental motor paralysis. Summary of Background Data. Segmental motor paralysis is seen occasionally in patients who undergo expansive open-door laminoplasty for cervical myelopathy, and has long been attributed to nerve root lesions caused by either traumatic surgical techniques or a tethering effect induced by excessive posterior shift of the spinal cord after decompression. Involvement of spinal cord pathology is not suggested in the English literature. Methods. The study group consisted of 15 patients (11 men and 4 women) in whom postoperative segmental motor paralysis developed after expansive open-door laminoplasty during a minimum follow-up of 2 years. Their average age at the time of surgery was 56 years. Characteristics of the paralysis, clinical symptoms, recovery rates calculated using pre- and postoperative Japanese Orthopedic Association scores, and radiographic findings including pre- and postoperative magnetic resonance images were analyzed retrospectively and compared with those of 126 patients without segmental paralysis who underwent expansive open-door laminoplasty. Results. The paralysis occurred mainly, but not only, at C5, and eight patients had multilevel involvements predominantly in the hinge side, whereas two patients had paralysis on both sides. The paralysis had developed after an average of 4.6 days. Of the 15 patients, 14 reported severe numbness or dysesthesia in their hands before surgery, and their average recovery rate for upper extremity sensory disturbance was lower than for those without paralysis. Postoperative magnetic resonance imaging showed the presence of a T2 high-signal intensity zone in the spinal cord of all the patients. The level of such abnormal signal areas corresponded to the level of paralyzed segments in 10 of the 15 patients. Paralysis resolved completely in 11 patients. Conclusions. Delayed onset of paralysis, dysesthesiain the upper extremities, and the presence of T2 highsignal intensity zones suggest that a certain impairment in the gray matter of the spinal cord may play an important role in the development of postoperative segmental motor paralysis.

Access to Document (DOI)

Segmentgal motor paralysis after expansive ope:n-door laminoplasty

Chiba Kazuhiro, Toyama Yoshiaki, Matsumoto Morio, Maruiwa Hirofumi, Watanabe Masahiko, Hirabayashi Kiyoshi

Spine 27 ( 19 ) 2108-2115 2002.10

Research paper (scientific journal), Joint Work

髄内外にわたるendodermal cyst 再発の1治験例

Ikegami Ken, Chiba Kazuhiro, Nishizawa Takashi, Nakamura Masaya, Maruiwa Hirofumi．matsumoto Morio, Toyama Yoshiaki, Mukai Makio

関東整形災害外科学会誌 33 ( 5 ) 311-315 2002.10

Research paper (scientific journal), Joint Work

特集―腰部脊柱管狭窄症；脊柱管狭窄に伴う脊椎変化―腰椎変性側弯症

Matsumoto Morio, Chiba Kazuhiro, Toyama Yoshiaki

整形外科 53 ( 8 ) 927-934 2002.08

Research paper (scientific journal), Joint Work

キアリ奇形に伴う脊髄空洞症の手術成績―特に疼痛の改善と空洞の局在に着目して

Nakamura Masaya, Chiba Kazuhiro, Tamura Mutsuhiro, Nishizawa Takashi, Maruiwa Hirofumi, Matsumoto Morio, Toyama Yoshiaki

臨床整形外科 37 ( 8 ) 911-916 2002.08

Research paper (scientific journal), Joint Work

頸椎前方固定術後の血腫により脊髄症状の増悪をきたした1例

Tanji Atsushi, Chiba Kazuhiro, Watanabe Masahiko, Matsumoto Morio, Maruiwa Hirofumi, Fujimura Yoshikazu, Toyama Yoshiaki

関東整形災害外科学会誌 33 ( 4 ) 166-170 2002.08

Research paper (scientific journal), Joint Work

硬膜内に発生した傍神経節腫の1例

Ichihara Daisuke, Nishizawa Takashi, Watanabe Masahiko, Nakamura Masaya, Maruiwa Hirofumi, Matsumoto Morio, Chiba Kazuhiro, Toyama Yoshiaki

臨床整形外科 37 ( 8 ) 971-974 2002.08

Research paper (scientific journal), Joint Work

腰椎椎間板レーザー治療後再手術例の検討

Takahashi Kazuhisa, Endou Tomoki, Moriya Hideshige, Matsumoto Morio, Chiba Kazuhiro, Toyama Yoshiaki, Miyamoto Takashi, Nishimoto Hirofumi, Shimizu Katsuji

臨床整形外科 37 ( 7 ) 813-818 2002.07

Research paper (scientific journal), Joint Work

特殊病態に対する手術療法とその治療成績；若年者の頸椎症性脊髄症に対する手術療法

Kamata Michihiro, Maruiwa Hirofumi, Matsumoto Morio, Chiba Kazuhiro, Toyama Yoshiaki

脊椎脊髄ジャーナル 15 ( 6 ) 663-667 2002.06

Research paper (scientific journal), Joint Work

高齢者に対する頸椎・腰椎同時後方除圧手術について

Okushima Yuuichirou, Chiba Kazuhiro, Matsumoto Morio, Maruiwa Hirofumi, Nishizawa Takashi, Toyama Yoshiaki

関東整形災害外科学会誌 33 ( 3 ) 122-125 2002.06

Research paper (scientific journal), Joint Work

頸椎症の手術療法；片開き式脊柱管拡大術

Chiba Kazuhiro, Maruiwa Hirofumi, Matsumoto Morio, Nakamura Masaya, Nishizawa Takashi, Toyama Yoshiaki

脊椎脊髄ジャーナル 15 ( 6 ) 663-667 2002.06

Research paper (scientific journal), Joint Work

頸椎症の保存療法；頸椎症および頸椎椎間板ヘルニアに対する保存療法―脊髄症例を中心に―

Matsumoto Morio, Chiba Kazuhiro, Toyama Yoshiaki

脊椎脊髄ジャーナル 15 ( 6 ) 538-542 2002.06

Research paper (scientific journal), Joint Work

腰椎変性すべり症に対する後方除圧術による腰痛治療成績の検討

Nishizawa Takashi, Chiba Kazuhiro, Nakamura Masaya, Matsumoto Morio, Maruiwa Hirofumi, Toyama Yoshiaki

臨床整形外科 37 ( 5 ) 601-605 2002.05

Research paper (scientific journal), Joint Work

脊髄円錐高位の椎間板ヘルニア

Matsumoto Morio, Chiba Kazuhiro, Toyama Yoshiaki

脊椎脊髄ジャーナル 15 ( 4 ) 293-297 2002.04

Research paper (scientific journal), Joint Work

腰椎部に発生し硬膜内外および椎体内に進入した髄膜腫の1例

Nishiwaki Tooru, Nishizawa Takashi, Chiba Kazuhiro, Watanabe Masahiko, Nakamura Masaya, Matsumoto Morio, Maruiwa Hirofumi, Toyama Yoshiaki

関東整形災害外科学会誌 33 ( 2 ) 65-68 2002.04

Research paper (scientific journal), Joint Work

腰椎部に発生した硬膜内外および椎体内に侵入した髄膜腫の1例

Nishiwaki Tooru，Nishizawa Takashi，Chiba Kazuhiro，Watanabe Masahiko，Nakamura Masaya，Matsumoto Morio，Maruiwa Hirofumi，Toyama Yoshiaki

関東整形災害外科学会雑誌 33 ( 2 ) 92-98 2002.04

Research paper (scientific journal), Joint Work

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