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Hiromi Nakajima
Ibaraki University
35Publications
8H-index
261Citations
Publications 35
Newest
#1Hirotaka Mutsuzaki (Ibaraki Prefectural University of Health Sciences)H-Index: 11
#2Hiromi Nakajima (Ibaraki University)H-Index: 8
Last.Masataka SakaneH-Index: 26
view all 4 authors...
Background A detailed evaluation focusing on the fibrocartilage layers in the anterior cruciate ligament (ACL) insertion is necessary to consider regeneration of the insertion. This study examined the development of the fibrocartilage layers in the ACL tibial insertion in rabbits by quantitative morphometric evaluations based on histological and immunohistochemical analyses.
#1Hirotaka Mutsuzaki (Ibaraki Prefectural University of Health Sciences)H-Index: 11
#2Hiromi Nakajima (Ibaraki University)H-Index: 8
Last.Masataka SakaneH-Index: 26
view all 4 authors...
Background Calcium phosphate (CaP)-hybridization of tendon grafts has been shown to improve tendon-to-bone healing. The purpose of this study was to clarify the influence of different tendon graft placement methods on tendon-to-bone healing using CaP-hybridized tendon grafts in anterior cruciate ligament (ACL) reconstructions in rabbits.
#1Hirotaka Mutsuzaki (Ibaraki Prefectural University of Health Sciences)H-Index: 11
#2Hiromichi Fujie (Tokyo Metropolitan University)H-Index: 14
Last.Masataka SakaneH-Index: 26
view all 6 authors...
Abstract Background Calcium phosphate (CaP)-hybridized tendon grafts improved biomechanical function compared with untreated grafts after single-bundle (SB) anterior cruciate ligament (ACL) reconstruction. The purpose of this study was to compare the biomechanical function between anatomic double-bundle (DB) and single-bundle (SB) ACL reconstructions using CaP-hybridized tendon grafts at 6 months postoperatively in goats. Hypothesis We hypothesized that the postoperative biomechanical function i...
#1Hirotaka Mutsuzaki (Ibaraki Prefectural University of Health Sciences)H-Index: 11
#2Hiromichi Fujie (Tokyo Metropolitan University)H-Index: 14
Last.Masataka SakaneH-Index: 26
view all 6 authors...
Abstract Background Calcium phosphate (CaP)-hybridized tendon grafts improved biomechanical function compared with untreated grafts after single-bundle (SB) anterior cruciate ligament (ACL) reconstruction. The purpose of this study was to compare the biomechanical function between anatomic double-bundle (DB) and single-bundle (SB) ACL reconstructions using CaP-hybridized tendon grafts at 6 months postoperatively in goats. Hypothesis We hypothesized that the postoperative biomechanical function i...
This study examined the influence of immobilization on chondrocyte apoptosis and histological features of the anterior cruciate ligament (ACL) insertion and knee articular cartilage in rabbits. Forty-eight male Japanese white rabbits were assigned to an immobilization (n = 24) or sham (n = 24) group. Rabbits in the immobilization group underwent complete unilateral surgical knee immobilization and rabbits in the sham group underwent a sham surgery. The average thickness of the glycosaminoglycan ...
#1Hirotaka Mutsuzaki (Ibaraki Prefectural University of Health Sciences)H-Index: 11
#2Hiromichi Fujie (Tokyo Metropolitan University)H-Index: 14
Last.Masataka SakaneH-Index: 26
view all 6 authors...
Background:We previously developed a novel technique using an alternate soaking process that improves tendon-bone healing by hybridizing the tendon graft with calcium phosphate (CaP). However, the effects of the CaP-hybridized tendon graft on anatomic single-bundle anterior cruciate ligament (ACL) reconstruction remain unclear.Purpose:To determine the effects of CaP-hybridized tendon grafts compared with untreated tendon grafts 6 months after anatomic single-bundle ACL reconstruction using a goa...
#1Keita Kajiwara (Ibaraki University)H-Index: 1
#2Midori Kozawa (Ibaraki University)H-Index: 1
Last.Yoshikazu Adachi (Ibaraki University)H-Index: 16
view all 6 authors...
Twenty nine isolates identified as Brachyspira hyodysenteriae were most susceptible to carbadox and metronidazole, whereas they were resistant to macrolides. The isolates showed intermediate susceptibility to tiamulin, lincomycin, penicillin G, ampicillin, chloramphenicol, tetracycline, enrofloxacin and valnemulin, with MIC50 values ranging from 0.39 to 3.13.
#1Hirotaka Mutsuzaki (Ibaraki Prefectural University of Health Sciences)H-Index: 11
#2Hiromi Nakajima (Ibaraki University)H-Index: 8
Last.Masataka Sakane (University of Tsukuba)H-Index: 26
view all 5 authors...
Abstract Background The purpose of this study was to clarify the influence of mechanical unloading on histological changes of the patellar tendon (PT) insertion in rabbits. Materials and methods The PT was completely released from stress by drawing the patella toward the tibial tubercle with a stainless steel wire installed between the patella and tibial tubercle (mechanical unloading group, n = 28). The animals of the sham group underwent the same surgical procedure; however, the wire was not t...
The purpose of this study was to examine the histological changes at the patella tendon (PT) insertion site under gradual elongation in rabbits. Gradual elongation of the PT was performed using external fixation for 4 weeks, with a lengthening speed of 0.5 mm/day (elongation group; n = 24). Rabbits in the sham group underwent the same surgical procedure without gradual elongation (sham group; n = 24). Eight animals were sacrificed 1, 2 and 4 weeks after surgery in each group, respectively. Avera...
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