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Yagura T, Oe K, Kobayasi F, Sogawa S, Nakamura T, Iida H, Saito T. Experimental periprosthetic fractures with collarless polished tapered cemented stems. Int Orthop 2024; 48:1171-1178. [PMID: 38443715 DOI: 10.1007/s00264-024-06136-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 02/29/2024] [Indexed: 03/07/2024]
Abstract
PURPOSE After cemented total hip arthroplasty, the risk of periprosthetic fracture (PPF) of taper-slip stems is higher than that of composite-beam stems. We aimed to assess the conditions resulting in PPFs of taper-slip stems using a falling weight. METHODS Taper-slip stems were fixed to five types of simulated bone models using bone cement, and the fractures were evaluated by dropping stainless-steel weights from a predetermined height onto the heads. The periprosthetic fracture height in 50% of the bone models (PPFH50) was calculated using the staircase method. RESULTS For the fixation with 0° of flexion, the values for PPFH50 were 61 ± 11, 60 ± 13, above 110, 108 ± 49, and 78 ± 12 cm for the cobalt-chromium-molybdenum alloy, stainless steel alloy (SUS), titanium alloy (Ti), smooth surface, and thick cement mantle models, respectively; for the fixation with 10° of flexion (considering flexure), the PPFH50 values were 77 ± 5, 85 ± 9, 90 ± 2, 89 ± 5, and 81 ± 11 cm, respectively. The fracture rates of the polished-surface stems were 78.6 and 35.7% at the proximal and distal sites, respectively (p < 0.05); the fracture rates of the smooth-surface stems were 14.2 and 100%, respectively (p < 0.05). CONCLUSION The impact tests demonstrated that the conditions that were less likely to cause PPFs were use of Ti, a smooth surface, a thick cement mantle, and probably, use of SUS.
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Affiliation(s)
- Takuma Yagura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Fumito Kobayasi
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Shohei Sogawa
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
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Oe K, Iida H, Otsuki Y, Toyoda T, Kobayashi F, Sogawa S, Nakamura T, Saito T. Validity of a preoperative scoring system for surgical management of periprosthetic hip infection: one-stage vs. two-stage revision. Arch Orthop Trauma Surg 2024:10.1007/s00402-024-05279-5. [PMID: 38662000 DOI: 10.1007/s00402-024-05279-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 03/10/2024] [Indexed: 04/26/2024]
Abstract
INTRODUCTION There are no widely accepted algorithms for determining optimal treatment for periprosthetic joint infection (PJI). Our study aimed to confirm the validity of a previously published scoring system in a larger number of patients to support a rational surgical treatment strategy for periprosthetic hip infection. MATERIALS AND METHODS Between February 2001 and December 2020, we performed 155 consecutive revision total hip arthroplasties (THAs) for PJI, with mean follow-up of 6 years. One-stage revision THA was performed in 56 hips and two-stage revision THA in 99 hips. Prosthesis survival from recurrent infection was determined by Kaplan-Meier analysis, using implant removal as the endpoint. The pre-operative scoring system (full score of 12 points), including 6 essential elements, was retrospectively evaluated. RESULTS The 10-year survival rates were 98% for one-stage (95% confidence interval [CI], 94-100) and 87% (95% CI, 79-96) for two-stage revision THA. Multivariate Cox regression analysis provided a total preoperative score as an independent risk factor for implant removal (hazard ratio, 0.17; 95% CI, 0.06-0.49; p < 0.001). The sensitivity and specificity at the cut-off of 4 points on the scoring system were 80% and 91%, respectively. The average score for one-stage revision THA in successful and failed cases were 8.9 and 6.0, and for two-stage revision THA were 6.5 and 3.9, respectively. We found significant differences between successful cases in one- and two-stage revision THA (p < 0.05). CONCLUSIONS The preoperative scoring system was useful for managing PJI. One-stage revision THA is recommended in patients scoring ≥ 9 points, and meticulously performed two-stage revision THA is encouraged for patients scoring ≥ 4 points.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Yosuke Otsuki
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Takashi Toyoda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Fumito Kobayashi
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Shohei Sogawa
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
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Oe K, Iida H, Otsuki Y, Kobayashi F, Sogawa S, Nakamura T, Saito T. The modified Spitzy shelf acetabuloplasty for the dysplastic hip. Bone Jt Open 2023; 4:932-941. [PMID: 38053345 DOI: 10.1302/2633-1462.412.bjo-2023-0103.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2023] Open
Abstract
Aims Although there are various pelvic osteotomies for acetabular dysplasia of the hip, shelf operations offer effective and minimally invasive osteotomy. Our study aimed to assess outcomes following modified Spitzy shelf acetabuloplasty. Methods Between November 2000 and December 2016, we retrospectively evaluated 144 consecutive hip procedures in 122 patients a minimum of five years after undergoing modified Spitzy shelf acetabuloplasty for acetabular dysplasia including osteoarthritis (OA). Our follow-up rate was 92%. The mean age at time of surgery was 37 years (13 to 58), with a mean follow-up of 11 years (5 to 21). Advanced OA (Tönnis grade ≥ 2) was present preoperatively in 16 hips (11%). The preoperative lateral centre-edge angle ranged from -28° to 25°. Survival was determined by Kaplan-Meier analysis, using conversions to total hip arthroplasty as the endpoint. Risk factors for joint space narrowing less than 2 mm were analyzed using a Cox proportional hazards model. Results The mean Merle d'Aubigné clinical score improved from 11.6 points (6 to 17) preoperatively to 15.9 points (12 to 18) at the last follow-up. The survival rates were 95% (95% confidence interval (CI) 91 to 99) and 86% (95% CI 50 to 97) at ten and 15 years. Multivariate Cox regression identified three factors associated with radiological OA progression: age (hazard ratio (HR) 2.85, 95% CI 1.05 to 7.76; p = 0.0398), preoperative joint space (HR 2.41, 95% CI 1.35 to 4.29; p = 0.0029), and preoperative OA (HR 8.34, 95% CI 0.94 to 73.77; p = 0.0466). Conclusion Modified Spitzy shelf acetabuloplasty is an effective joint-preserving surgery with a wide range of potential indications.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
| | - Yosuke Otsuki
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
| | - Fumito Kobayashi
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
| | - Shohei Sogawa
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
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Kuri A, Iida H, Kawahara K. Comparative analysis of glyceroglycolipids from Lactiplantibacillus pentosus and other Lactiplantibacillus species. J GEN APPL MICROBIOL 2023; 69:135-141. [PMID: 36476588 DOI: 10.2323/jgam.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Cellular lipids of Lactiplantibacillus species were extracted and neutral glyceroglycolipids (GGLs) were purified, and analyzed by thin-layer chromatography (TLC). Four GGLs with known structures were detected in GGL preparation of L. plantarum, and the same GGL profiles of TLC were observed for all other strains of Lactiplantibacillus species examined, suggesting that the GGL profile could be one of the chemotaxonomic characters of the genus Lactiplantibacillus. On the other hand, the quantity of each GGL showed some variation among species, and L. pentosus was found to have higher proportion of disaccharide-type GGL, designated GGL-3 in this study, compared with other species including L. plantarum. The quantitative difference of GGL-3 found in this study could be regarded as the characteristics of L. pentosus. The carbohydrate structure of L. pentosus GGL-3 was precisely analyzed by 1H NMR and methylation analysis, and the structure was confirmed to be αGal-(1→2)-αGlc-diacylglycerol, with the carbohydrate structure identical to that of L. plantarum, although fatty acid composition of the two GGL-3 showed some difference.
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Affiliation(s)
- Ayako Kuri
- Graduate School of Engineering, Kanto Gakuin University
- Faculty of Food and Health Sciences, Showa Women's University
| | - Hirokazu Iida
- Graduate School of Engineering, Kanto Gakuin University
- Department of Biosciences, College of Science and Engineering, Kanto Gakuin University
| | - Kazuyoshi Kawahara
- Graduate School of Engineering, Kanto Gakuin University
- Department of Biosciences, College of Science and Engineering, Kanto Gakuin University
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Oe K, Iida H, Sogawa S, Kobayashi F, Nakamura T, Saito T. Trochanteric Claw Plate Fixation for Greater Trochanteric Fracture or Osteotomy in Total Hip Arthroplasty. Acta Med Okayama 2023; 77:619-625. [PMID: 38145936 DOI: 10.18926/amo/66154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
This study retrospectively evaluated 41 consecutive open reductions and internal fixations following primary or revision total hip arthroplasty, which required trochanteric claw plate fixation for greater trochanteric fracture or osteotomy between January 2008 and December 2020. The mean duration of clinical follow-up was 4.2 years (range, 1-13 years). The patients included 13 men and 28 women, with a mean age of 68 years (range, 32-87 years). The indications for intervention included trochanteric osteotomy, intraoperative fracture, and non-union including postoperative fracture in 6, 9, and 26 cases, respectively. The mean Merle d'Aubigné Clinical Score improved from 9.4 points (range, 5-15 points) pre-operatively, to 14.3 points (range, 9-18 points) at the last follow-up. Bone union occurred in 35 cases (85%), while implant breakage occurred in four cases. At the last follow-up, the mean Merle d'Aubigné Clinical Scores of bone union and non-union were 15.3 and 14.1, respectively (p=0.48). The Kaplan-Meier survival rate, with the endpoint being revision surgery for pain, non-union, dislocation, or implant breakage, at 10 years was 80.0% (95% confidence interval: 62.6-97.4%). Greater trochanteric fixation using a trochanteric claw plate yielded successful results.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University
| | - Shohei Sogawa
- Department of Orthopaedic Surgery, Kansai Medical University
| | | | | | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University
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Oe K, Iida H, Hirata M, Kawamura H, Ueda N, Nakamura T, Okamoto N, Saito T. An atypical periprosthetic fracture in collarless, polished, tapered, cemented stems of total hip arthroplasty: A report of five SC-stem cases and literature review. J Orthop Sci 2023; 28:1422-1429. [PMID: 34045138 DOI: 10.1016/j.jos.2021.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/29/2021] [Accepted: 04/02/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan.
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Masayuki Hirata
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Hiroshi Kawamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Narumi Ueda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Naofumi Okamoto
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
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Oe K, Iida H, Inokuchi R, Otsuki Y, Toyoda T, Kobayashi F, Sogawa S, Nakamura T, Saito T. Can serum C-reactive protein determine the timing of reimplantation in two-stage revised arthroplasty for periprosthetic hip infection? J Orthop Sci 2023:S0949-2658(23)00194-X. [PMID: 37507315 DOI: 10.1016/j.jos.2023.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/10/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND There are no definitive guides to determine the timing of reimplantation in two-stage revision total hip arthroplasties (THA) for periprosthetic joint infection (PJI). This study was to design to support a rational strategy of surgical treatment using serum C-reactive protein (CRP). METHODS We analyzed a total of 75 hips for PJI in the process of performing two-stage and multiple-stage revision THAs. CRP level was retrospectively evaluated every week and transformed to log2 (CRP) using a logistic regression model. Prosthesis survival from recurrent infection was determined by Kaplan-Meier analysis, using implant removal as the endpoint. Receiver operating characteristic curves were calculated using each log2 (CRP) to assess predictions of recurrent infection. RESULTS The 10-year survival rates were 85% (95% confidence interval, 76-95) and 100% for two-stage and multiple-stage revision THAs, respectively. Preoperatively, at 1, 2, 3, and 5 weeks, log2 (CRP) was not associated with recurrent infection. In failed two-stage revision THAs, log2 (CRP) at 3 weeks divided by that at 2 weeks showed a significant difference. Failure was associated with a ratio of >4.0 for the CRP level between 3 and 2 weeks. CONCLUSION In two-stage revision THA for PJI, patients with CRP elevation from 2 weeks to 3 weeks, especially 4-fold elevation, suggests the need for further debridement and postponement of second-staged reimplantation.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan.
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Ryo Inokuchi
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Yosuke Otsuki
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Takashi Toyoda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Fumito Kobayashi
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Shohei Sogawa
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
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Toyoda T, Oe K, Iida H, Nakamura T, Okamoto N, Saito T. Treatment strategies for recurrent dislocation following total hip arthroplasty: relationship between cause of dislocation and type of revision surgery. BMC Musculoskelet Disord 2023; 24:238. [PMID: 36991409 PMCID: PMC10053790 DOI: 10.1186/s12891-023-06355-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
Abstract
Background
There are many therapeutic options for dislocation following total hip arthroplasty (THA). The aim of this study was to evaluate the results of revision surgery for dislocated hips.
Methods
Between November 2001 and December 2020, 71 consecutive revision hip surgeries were performed at our institution for recurrent dislocation following THA. We conducted a retrospective study of all 65 patients (71 hips), who were followed for a mean of 4.7 ± 3.2 years (range, 1–14). The cohort included 48 women and 17 men, with a mean age of 71 ± 12.3 years (range, 34–92). The mean number of previous surgeries was 1.6 ± 1.1 (range, 1–5). From intraoperative findings, we created six categories of revision hip surgery for recurrent dislocation following THA: open reduction and internal fixation (2 hips); head change or liner change only (6 hips); cup change with increased head size only (14 hips); stem change only (7 hips); cup and stem change (24 hips); and conversion to constrained cup (18 hips). Prosthesis survival was analyzed by the Kaplan-Meier method, with repeat revision surgery for re-dislocation or implant failure as the endpoint. A cox proportional hazards model was used for risk factors of re-revision surgery.
Results
Re-dislocation occurred in 5 hips (7.0%) and implant failure in 1 hip (1.4%). The 10-year survival rate was 81.1% (95% confidence interval, 65.5–96.8). A Dorr classification of “positional” was a risk factor for re-revision surgery due to re-dislocation.
Conclusion
Clear understanding of the cause of dislocation is essential for optimizing revision procedures and improving the rate of successful outcomes.
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Oe K, Iida H, Toyoda T, Nakamura T, Okamoto N, Saito T. Endofemoral Shooting Technique for Removing Well-fixed Cementless Stems. Arthroplast Today 2022; 17:36-42. [PMID: 36032794 PMCID: PMC9399389 DOI: 10.1016/j.artd.2022.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 11/18/2022] Open
Abstract
Background The removal of a well-fixed cementless stem poses technical challenges. The aim of this study was to evaluate the outcomes of our endofemoral extraction technique established in 2001. Methods Between January 2001 and December 2016, 118 consecutive revisions following bipolar or total hip arthroplasty, which required cementless femoral stem removal, were performed at our institution. This retrospective study evaluated 106 patients (108 hips) who were followed up for a mean of 9.2 years (range, 5-20 years). The patients included 15 men and 91 women with a mean age of 65 years (range, 33-87 years). Endofemoral extracted stem removal was performed as follows. Multiple Kirschner wires were sequentially inserted into the interface between the implant and cortical bone, after which the implant was detached using a thin chisel. After the cementless stem was removed, it was replaced with a cemented stem using an autograft, as needed. Radiological loosening of the femoral stem was defined as definite or probable loosening, based on the criteria of Harris et al. Prosthesis survival was analyzed using the Kaplan-Meier method, with the endpoint set as repeat revision surgery for stem loosening or femoral fracture. Results Re-revision surgery was performed in 7 hips. Stem loosening was observed in 4 hips, and the mean subsidence was 0.3 mm (0-3 mm). The 10-year survival rate was 97.7% (95% confidence interval, 93.2-100). Conclusions Our technique for removing well-fixed cementless stems yielded successful results.
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Affiliation(s)
- Kenichi Oe
- Corresponding author. Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan. Tel.: +81 72 804 2436.
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Iida H, Okawa M, Leeanansaksiri S, Takahashi K. Efficient Monoalkylation of Anilines with Chalcones using Microwave-Assisted aza-Michael Addition. LETT ORG CHEM 2022. [DOI: 10.2174/1570178619666220128142833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
The aza-Michael addition is an attractive methodology for synthetic organic chemistry, because the resulting -aminocarbonyl compounds are valuable building blocks for the synthesis of pharmaceutically useful compounds. However, monoalkylation of aniline and its derivatives is quite difficult because anilines are poor nucleophiles compared with monoalkylated ones. Since the publication of pioneering articles in 1986, the development of microwave-assisted organic synthesis has been remarkable. Therefore, we began by investigating the monoalkylation of aniline and its derivatives under microwave irradiation.
Because of the ready formation of bisalkylated products, the monoalkylation reaction between anilines and Michael acceptors is quite difficult. To overcome the difficulty, we investigated the effect of microwave irradiation for the alkylation of anilines with chalcones as Michael acceptors.
Microwave-assisted aza-Michael addition proceeded smoothly to obtain mainly the monoalkylated Michael adduct. The substitution effects of both chalcone and aniline concerning the yield were also studied. We supposed that dimer formation by two monoalkylated compounds produces a bulky environment around the amino group, which prevents monoalkylated compounds from undergoing a second alkylation.
We confirmed a highly efficient and rapid method for preparing monoalkylated anilines using microwave-assisted aza-Michael addition between anilines and chalcones.
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Affiliation(s)
- Hirokazu Iida
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, 1-50-1, Mutsuura-higashi, Kanazawa-ku, Yokohama, Kanagawa, 236-8501, Japan
| | - Mitsuki Okawa
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, 1-50-1, Mutsuura-higashi, Kanazawa-ku, Yokohama, Kanagawa, 236-8501, Japan
| | - Siriwat Leeanansaksiri
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, 1-50-1, Mutsuura-higashi, Kanazawa-ku, Yokohama, Kanagawa, 236-8501, Japan
| | - Kie Takahashi
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, 1-50-1, Mutsuura-higashi, Kanazawa-ku, Yokohama, Kanagawa, 236-8501, Japan
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Tanaka S, Iida H, Ueno M, Hirokawa F, Yoshida H, Ishii H, Nomi T, Nakai T, Kaibori M, Ikoma H, Noda T, Shinkawa H, Maehira H, Hayami S, Komeda K, Kubo S. Postoperative loss of independence 1 year after liver resection: prospective multicentre study. Br J Surg 2022; 109:e54-e55. [PMID: 35041737 DOI: 10.1093/bjs/znab452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 12/08/2021] [Indexed: 11/14/2022]
Affiliation(s)
- S Tanaka
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Iida
- Division of Gastrointestinal, Breast, and General Surgery, Department of Surgery, Shiga University of Medical Science, Otsu, Japan
| | - M Ueno
- Second Department of Surgery, Wakayama Medical University, Wakayama, Japan
| | - F Hirokawa
- Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Osaka, Japan
| | - H Yoshida
- Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Ishii
- Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Nomi
- Department of Surgery, Nara Medical University, Kashihara, Nara, Japan
| | - T Nakai
- Department of Surgery, Faculty of Medicine, Kindai University, Osaka-Sayama, Osaka, Japan
| | - M Kaibori
- Department of Surgery, Hirakata Hospital, Kansai Medical University, Hirakata, Osaka, Japan
| | - H Ikoma
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Noda
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - H Shinkawa
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Maehira
- Division of Gastrointestinal, Breast, and General Surgery, Department of Surgery, Shiga University of Medical Science, Otsu, Japan
| | - S Hayami
- Second Department of Surgery, Wakayama Medical University, Wakayama, Japan
| | - K Komeda
- Department of General and Gastroenterological Surgery, Osaka Medical College, Takatsuki, Osaka, Japan
| | - S Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
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Kawahara K, Iida H, Yokota A. Detection of 2-hydroxy-fatty acids and 2-hydroxy-fatty acid-containing ceramides in a gliding marine bacterium Aureispira marina. J GEN APPL MICROBIOL 2021; 67:100-105. [PMID: 33716229 DOI: 10.2323/jgam.2020.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The cellular fatty acid composition of Aureispira marina IAM 15389T (JCM 23197T), a gliding bacterium isolated from the coastline of Thailand, was re-examined by using a standard MIDI method based on alkaline hydrolysis, and two other methods. The direct transesterification using 5% HCl/methanol or 4 M HCl hydrolysis followed by methyl esterification revealed that 2-hydroxy-15-methyl-hexadecanoic acid (2-OH-iso-C17:0) and 2-hydroxy-15-methyl-hexadecenoic acid (2-OH-iso-C17:1), which were not reported in a previous paper, were found to be major cellular fatty acids of this bacterium, and the amount of 2-OH-iso-C17:1 was even higher than that of arachidonic acid (C20:4), a characteristic polyunsaturated fatty acid present in this bacterium. These 2-hydroxy-fatty acids were contained in two cellular lipids that were relatively stable against alkaline hydrolysis. One of them was analyzed by mass spectrometry, 1H-nuclear magnetic resonance, and other chemical methods, and identified as a ceramide composed of 2-hydroxy-fatty acid and sphingosine of 19 carbons with three double bonds. A minor ceramide containing 18 carbon sphingosine with three double bonds was also detected.
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Affiliation(s)
- Kazuyoshi Kawahara
- Department of Biosciences, College of Science and Engineering, Kanto Gakuin University
| | - Hirokazu Iida
- Department of Biosciences, College of Science and Engineering, Kanto Gakuin University
| | - Akira Yokota
- Department of Microbial Resources, Tohoku University Graduate School of Agricultural Science
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Oe K, Sawada M, Nakamura T, Iida H, Saito T. Daptomycin for the Treatment of Gram-Positive Periprosthetic Hip Infections: Can Daptomycin Prevent the Implant Removal? Cureus 2021; 13:e15842. [PMID: 34322334 PMCID: PMC8298194 DOI: 10.7759/cureus.15842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2021] [Indexed: 11/17/2022] Open
Abstract
Introduction Management of periprosthetic hip infections (PHIs) generally consists of implant removal and thorough debridement, accompanied by appropriate antibiotic therapy. Daptomycin (DAP) is a novel antibiotic, which allowed for implant retention in several patients after treating their infected joints. However, there is no consensus about implant retention or removal during the treatment of PHIs. The aim of this study was to examine the effect of DAP and to determine a surgical treatment strategy. Methods This study retrospectively evaluated 20 patients between August 2014 and December 2018, divided into implant retention (n=9) and implant removal groups (n=11). Infection control and risk of recurrent infection were evaluated. Infection control was defined as not requiring implant removal after the final treatment. Results Infection control rates in implant retention and implant removal groups were 67% and 90%, respectively. All late chronic infections resulted in failure cases within the implant retention group. In the implant retention group, mean preoperative risk scores for successful cases were significantly higher than those for failure cases (p<0.05). Conclusions Patients with low risk did not require implant removal, suggesting that DAP may be a breakthrough alternative to traditional PHI management.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, JPN
| | - Masahiro Sawada
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, JPN
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, JPN
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, JPN
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, JPN
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Kaga A, Iida H, Tsuchiya S, Saito H, Nakano K, Yorimitsu H. Aromatic Metamorphosis of Thiophenes by Means of Desulfurative Dilithiation. Chemistry 2021; 27:4567-4572. [PMID: 33349986 DOI: 10.1002/chem.202005223] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/16/2020] [Indexed: 12/24/2022]
Abstract
A new mode of aromatic metamorphosis has been developed, which allows thiophenes and their benzo-fused derivatives to be converted to a variety of exotic heteroles. This transformation involves 1) the efficient generation of key 1,4-dianions by means of desulfurative dilithiation with lithium powder and 2) the subsequent trapping of the dianions with heteroatom electrophiles in a one-pot manner. Via the desulfurative dilithiation, the sulfur atoms of thiophenes are replaced also with a carbon-carbon double bond or a 1,2-phenylene for the construction of benzene rings.
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Affiliation(s)
- Atsushi Kaga
- Department of Chemistry, Graduate School of Science, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hirokazu Iida
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Shun Tsuchiya
- Department of Chemistry, Graduate School of Science, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Hayate Saito
- Department of Chemistry, Graduate School of Science, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Koji Nakano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Sakyo-ku, Kyoto, 606-8502, Japan
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15
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Yagura T, Oe K, Paku M, Tajima T, Nakamura M, Iida H, Saito T. A Possible Protective Effect of the 'Cam Deformity' on Femoral Neck Fracture: The Relationship between Hip Morphology and the Types of Hip Fracture. Acta Med Okayama 2020; 74:221-227. [PMID: 32577020 DOI: 10.18926/amo/59954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We retrospectively evaluated the cases of 169 hip fracture patients, their previous fractures, and the contralateral hip joint's morphology. A history of contralateral hip fracture was present in 23 patients (Contra group). The other patients had a unilateral hip fracture: a trochanteric fracture (Troch group, n=73) or a femoral neck fracture (Neck group, n=73). In the Troch and Neck groups, we used anteroposterior and cross-table axialview radiographs of the contralateral hip to evaluate the proximal femur's anatomy. In the Contra group, the concordance rate between the first and second types of hip fracture was 65.2%, and the second hip fracture's morphology indicated that the trochanteric fracture had a cam deformity in terms of the femoral head-neck ratio. The average alpha angle and femoral head-neck offset in the Troch group were significantly larger than those in the Neck group. In the Neck group, pistol-grip deformities of Arbeitsgemeinschaft für Osteosynthesefragen types B1 (subcapital), B2 (transcervical), and B3 (displaced) were observed in 42.1%, 75%, and 6% of cases, respectively. There was a smaller alpha angle and a larger femoral head-neck offset in the contralateral hip of femoral neck fractures; thus, the "cam deformity" may protect against femoral neck fractures.
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Affiliation(s)
- Takuma Yagura
- Department of Orthopaedic Surgery, Kansai Medical University, Osaka 573-1010, Japan
| | - Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, Osaka 573-1010, Japan
| | - Masaaki Paku
- Department of Orthopaedic Surgery, Osaka Saiseikai Izuo Hospital, Osaka 551-0032, Japan
| | - Takeshi Tajima
- Department of Orthopaedic Surgery, Meisei Hospital, Osaka 534-0024, Japan
| | - Masaya Nakamura
- Department of Orthopaedic Surgery, McSYL Tatsumi Hospital, Osaka 563-0031, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, Osaka 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, Osaka 573-1010, Japan
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Sawada M, Oe K, Hirata M, Kawamura H, Ueda N, Nakamura T, Iida H, Saito T. Linezolid versus daptomycin treatment for periprosthetic joint infections: a retrospective cohort study. J Orthop Surg Res 2019; 14:334. [PMID: 31651331 PMCID: PMC6814137 DOI: 10.1186/s13018-019-1375-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 09/13/2019] [Indexed: 11/17/2022] Open
Abstract
Background Linezolid (LZD) and daptomycin (DAP) are predominantly used to target gram-positive pathogens; however, treatment effectiveness and adverse reactions for periprosthetic joint infections (PJIs) remain unknown. The aim of this study was to compare the effectiveness and adverse reactions of LZD and DAP for PJIs. Methods This study retrospectively evaluated 82 patients between June 2009 and December 2017, to compare the effectiveness of LZD (group L, n = 39) and DAP (group D, n = 43) for treatment of PJIs harboring gram-positive microorganisms. Surgical options used with LZD or DAP therapy included implant retention, implant removal, and a shift to another appropriate antibiotic. Infection control was defined as not requiring implant removal after the final treatment. Results Gram-positive pathogens were isolated from 72% of group L and 70% of group D patients, respectively. Whole infection control rates against gram-positive pathogens in groups L and D were 79% and 77%, respectively. Furthermore, infection control rates were 94% and 58% in group L and 75% and 80% in group D, without and with implant removal, respectively. Significantly higher clinical success rates and lower adverse event rates were observed in group D, including higher red blood cell and platelet counts and lower C-reactive protein (CRP) levels. Conclusions Although the effectiveness of LZD and DAP was equivalent in terms of infection control rates for refractory PJIs with gram-positive pathogens, DAP therapy significantly decreased CRP levels and caused fewer adverse events than LZD treatment.
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Affiliation(s)
- Masahiro Sawada
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan.
| | - Masayuki Hirata
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Hiroshi Kawamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Narumi Ueda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
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Ueda N, Oe K, Nakamura T, Tsuta K, Iida H, Saito T. Sonication of Extracted Implants Improves Microbial Detection in Patients With Orthopedic Implant-Associated Infections. J Arthroplasty 2019; 34:1189-1196. [PMID: 30872034 DOI: 10.1016/j.arth.2019.02.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND We assessed whether combining the conventional culture and implant sonicate fluid culture (SFC) methods increased the diagnostic accuracy of orthopedic implant-associated infection (OIAI). METHODS Consecutive patients (n = 66) undergoing implant removal (OIAI, 17; non-OIAI, 49) were evaluated prospectively. We analyzed 493 samples (39 preoperative joint aspirates, 243 peri-implant tissue specimens, 124 implant sonication, 67 controls, and 20 water bath samples). OIAI was preoperatively evaluated based on clinical evidence of infection or aspirate culture (AC). Conventional methods required positive results in either preoperative ACs or intraoperative tissue cultures (TCs), whereas the combination method required at least 1 positive culture among 3 sources (AC, TC, or SFC). The application of SFC and the detection rate, sensitivity, and specificity of the diagnostic methods were assessed. RESULTS No controls or water bath samples harbored bacteria. Three patients (18%) were detected by SFC only and Peptostreptococcus and Corynebacterium species were isolated by SFC only. The OIAI detection rate attributable to SFC was significantly higher than that of TC (61% vs 36%; P = .02). The sensitivities of AC, TC, and SFC at a cutoff point of 1 colony-forming unit/plate and 1 positive culture were 60%, 59%, and 71%, respectively. At a cutoff point of 2 positive cultures, the combination (vs conventional) method showed significantly greater sensitivity (71% vs 47%; P = .008). CONCLUSION By incorporating SFCs into conventional culture methods, the diagnostic accuracy in the context of OIAI was significantly improved.
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Affiliation(s)
- Narumi Ueda
- Department of Orthopedic Surgery, Kansai Medical University Medical Center, Moriguchi, Osaka, Japan
| | - Kenichi Oe
- Department of Orthopedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Tomohisa Nakamura
- Department of Orthopedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Koji Tsuta
- Department of Clinical Laboratory, Kansai Medical University, Hirakata, Osaka, Japan
| | - Hirokazu Iida
- Department of Orthopedic Surgery, Kansai Medical University Medical Center, Moriguchi, Osaka, Japan
| | - Takanori Saito
- Department of Orthopedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
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Oe K, Iida H, Kobayashi F, Ueda N, Nakamura T, Okamoto N, Saito T. Reattachment of an osteotomized greater trochanter in total hip arthroplasty using an ultra-high molecular weight polyethylene fiber cable. J Orthop Sci 2018; 23:992-999. [PMID: 30122338 DOI: 10.1016/j.jos.2018.07.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 07/23/2018] [Accepted: 07/27/2018] [Indexed: 02/09/2023]
Abstract
BACKGROUND The optimum approach in total hip arthroplasty (THA) should reduce the risk of postoperative dislocation or limping, be applicable in every case, and be reusable in the future. The purpose of this study was to introduce our transgluteal approach for THA and to evaluate the type and frequency of complications around the greater trochanter. METHODS This study retrospectively evaluated 892 THA cases between January 2010 and March 2015 performed using our transgluteal approach that osteotomized only the lateral anteroinferior greater trochanter. The trochanteric fragment was reattached using one of three different protocols: Group A, three non-absorbable polyester sutures; Group B, two non-absorbable polyester sutures and one ultra-high molecular weight polyethylene (UHMWPE) fiber cable; or Group C, two UHMWPE fiber cables. Postoperative complications were assessed and recorded, and univariate logistic regression analyses were performed to determine whether risk factors and radiological complications around the greater trochanter were correlated. RESULTS None of the hips required revision for infection, dislocation, or limping. The rate of radiological complications around the greater trochanter at 1 year was 19.2% in Group A, 16.3% in Group B, and 7.9% in Group C (p < 0.001). Risk factors for radiological complications included the patient's disease or the surgeon's experience in Group A and the patient's age or the surgeon's experience in Group C. In the relationship between postoperative pain around the greater trochanter and radiological complications, there were no significant differences in all groups; no group interaction was observed (p= 0.3875). CONCLUSION The UHMWPE fiber cable was effective to reduce complications of the reattached osteotomized greater trochanter in THA.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan.
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan
| | - Fumito Kobayashi
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan
| | - Narumi Ueda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan
| | - Naofumi Okamoto
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan
| | - Takanori Saito
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata-city, Osaka, 573-1010, Japan
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Hanaoka H, Iida H, Kiyokawa T, Takakuwa Y, Kawahata K. A positive direct Coombs’ test in the absence of hemolytic anemia predicts high disease activity and poor renal response in systemic lupus erythematosus. Lupus 2018; 27:2274-2278. [DOI: 10.1177/0961203318809182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We determined the clinical utility of the direct Coombs’ test in the absence of hemolytic anemia as an indicator of disease activity and therapeutic response in systemic lupus erythematosus (SLE). SLE patients without hemolytic anemia who visited our hospital from January 2016 to November 2016 were retrospectively evaluated with a direct Coombs’ test. Clinical features, including SLE disease activity index (SLEDAI), treatment and laboratory findings were analyzed. For patients with lupus nephritis, we additionally evaluated the cumulative complete renal response rate over one year after induction therapy. Among 182 patients evaluated, 10 (5.8%) patients had a positive direct Coombs’ test in the absence of hemolytic anemia. They had a higher SLEDAI ( p < 0.01), higher circulating immune complex levels ( p = 0.01), higher anti-DNA titers ( p < 0.01) and a lower complete renal response rate ( p = 0.03) compared with those who were negative. Multivariate analysis indicated that SLEDAI was an independent factor correlated with the direct Coombs’ test without hemolytic anemia (odds ratio 2.4, 95% confidence interval 1.66–4.98, p < 0.01). A positive direct Coombs’ test in the absence of hemolytic anemia may therefore represent a useful biomarker for assessing disease activity and therapeutic response.
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Affiliation(s)
- H Hanaoka
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Iida
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - T Kiyokawa
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Y Takakuwa
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - K Kawahata
- Division of Rheumatology and Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
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Nakatake R, Iida H, Ishizaki M, Matsui K, Nakamura Y, Kaibori M, Nishizawa M, Okumura T. Metformin has a protective effect through the inhibition of inducible nitric oxide synthase gene expression in hepatocytes. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.2013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bornyakov V, Boyda D, Goy V, Iida H, Molochkov A, Nakamura A, Nikolaev A, Zakharov V, Wakayama M. Lattice QCD at finite baryon density using analytic continuation. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818202017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We simulate lattice QCD with two flavors of Wilson fermions at imaginary baryon chemical potential. Results for the baryon number density computed in the confining and deconfining phases at imaginary baryon chemical potential are used to determine the baryon number density and higher cumulants at the real chemical potential via analytical continuation.
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Ohkubo H, Fuyuki A, Arimoto J, Higurashi T, Nonaka T, Inoh Y, Iida H, Inamori M, Kaneda T, Nakajima A. Efficacy of percutaneous endoscopic gastro-jejunostomy (PEG-J) decompression therapy for patients with chronic intestinal pseudo-obstruction (CIPO). Neurogastroenterol Motil 2017. [PMID: 28631871 DOI: 10.1111/nmo.13127] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUNDS Chronic intestinal pseudo-obstruction (CIPO) is an intractable rare digestive disease manifesting persistent small bowel distension without any mechanical cause. Intestinal decompression is a key treatment, but conventional method including a trans-nasal small intestinal tube is invasive and painful. Therefore, a less invasive and tolerable new decompression method is urgently desired. We conducted a pilot study and assessed the efficacy and safety of percutaneous endoscopic gastro-jejunostomy (PEG-J) decompression therapy in CIPO patients. METHODS Seven definitive CIPO patients (2 males and 5 females) were enrolled. All patients received PEG-J decompression therapy. The number of days with any abdominal symptoms in a month (NODASIM), body mass index (BMI), serum albumin level (Alb), and small intestinal volume before and after PEG-J were compared in all patients. RESULTS Percutaneous endoscopic gastro-jejunostomy was well tolerated and oral intake improved in all patients. NODASIM has significantly decreased (24.3 vs 9.3 days/months) and BMI/Alb have significantly increased (14.9 vs 17.2 kg/m2 and 2.6 vs 3.8 g/dL, respectively), whereas total volume of the small intestine has not significantly reduced (4.05 vs 2.59 L, P=.18). Reflux esophagitis and chemical dermatitis were observed in one case but was successfully treated conservatively. CONCLUSIONS & INFERENCES Percutaneous endoscopic gastro-jejunostomy decompression therapy can contribute greatly to improvement of abdominal symptoms and nutritional status in CIPO patients. Although sufficient attention should be paid to acid reflux symptoms, PEG-J has the potential to be a non-invasive novel decompression therapy for CIPO available at home. However, accumulation of more CIPO patients and long-term observation are needed (UMIN000017574).
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Affiliation(s)
- H Ohkubo
- Hepatology and Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
| | - A Fuyuki
- Hepatology and Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
| | - J Arimoto
- Hepatology and Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
| | - T Higurashi
- Hepatology and Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
| | - T Nonaka
- Hepatology and Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
| | - Y Inoh
- Department of Medical Education, Yokohama City University School of Medicine, Yokohama, Japan
| | - H Iida
- Department of Medical Education, Yokohama City University School of Medicine, Yokohama, Japan
| | - M Inamori
- Department of Medical Education, Yokohama City University School of Medicine, Yokohama, Japan
| | - T Kaneda
- Department of Radiology, Yokohama City University School of Medicine, Yokohama, Japan
| | - A Nakajima
- Hepatology and Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
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Tone T, Fujisawa N, Seki Y, Iida H, Tachikawa K, Sugihara M, Minato A, Nishio S, Yamamoto T, Kitamura K, Ueda K, Saito S, Shimada R, Matsuda Y, Naruse Y, Shimamoto S, Tamura S, Yoshikawa M, Tomabechi K. Conceptual Design of Fusion Experimental Reactor(FER). ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst83-a22924] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Tone
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - N. Fujisawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Seki
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - H. Iida
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Tachikawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - M. Sugihara
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - A. Minato
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Nishio
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - T. Yamamoto
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Kitamura
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Ueda
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Saito
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - R. Shimada
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Matsuda
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Naruse
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Shimamoto
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Tamura
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - M. Yoshikawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Tomabechi
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
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Iida H, Takahashi K, Akatsu Y, Mizukami K. Microwave Irradiation Accelerates 4-Dimethylaminopyridine-catalyzed Michael Addition of Phenols or Anilines. CMIC 2017. [DOI: 10.2174/2213335603666161125122438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Loughlin MJ, Batistoni P, Konno C, Fischer U, Iida H, Petrizzi L, Polunovskiy E, Sawan M, Wilson P, Wu Y. ITER Nuclear Analysis Strategy and Requirements. Fusion Science and Technology 2017. [DOI: 10.13182/fst56-566] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M J Loughlin
- ITER Organization, Cadarache, 13108 St Paul-lez-Durance, France
| | - P. Batistoni
- Associazione EURATOM-ENEA sulla Fusione, Frascati (Roma), Italy
| | - C. Konno
- Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - U. Fischer
- Association FZK-Euratom, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
| | - H. Iida
- Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
| | - L. Petrizzi
- Associazione EURATOM-ENEA sulla Fusione, Frascati (Roma), Italy
| | - E. Polunovskiy
- ITER Organization, Cadarache, 13108 St Paul-lez-Durance, France
| | - M. Sawan
- University of Wisconsin, Madison, WI USA
| | - P. Wilson
- University of Wisconsin, Madison, WI USA
| | - Y. Wu
- Academy of Sciences Institute of Plasma Physics, China
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26
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Fischer U, Iida H, Li Y, Loughlin M, Sato S, Serikov A, Tsige-Tamirat T, Tautges T, Wilson PP, Wu Y. Use of CAD Generated Geometry Data in Monte Carlo Transport Calculations for ITER. Fusion Science and Technology 2017. [DOI: 10.13182/fst09-a8991] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- U. Fischer
- Association FZK-Euratom, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
| | - H. Iida
- Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - Y. Li
- Academy of Sciences, Institute of Plasma Physics, Hefei, Anhui, 230031, P. R. China
| | - M. Loughlin
- ITER Organization, CS 90 046, 13067 St. Paul lez Durance Cedex, France
| | - S. Sato
- Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - A. Serikov
- Association FZK-Euratom, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
| | - T. Tsige-Tamirat
- Association FZK-Euratom, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
| | - T. Tautges
- Argonne National Laboratory, Argonne, IL 60439, USA
| | - P. P. Wilson
- University of Wisconsin-Madison, 1500 Engineering Dr, Madison, WI 53706, USA
| | - Y. Wu
- Association FZK-Euratom, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
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Oe K, Iida H, Tsuda K, Nakamura T, Okamoto N, Ueda Y. Bone Remodeling in Acetabular Reconstruction Using a Kerboull-Type Reinforcement Device and Structural Bone-Grafting in Total Hip Arthroplasty. J Arthroplasty 2017; 32:908-914. [PMID: 27687810 DOI: 10.1016/j.arth.2016.08.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 08/06/2016] [Accepted: 08/12/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The purpose of this study was to identify the long-term durability of the Kerboull-type reinforcement device (KT plate) in acetabular reconstruction for massive bone defects, assessing the remodeling of structural bone grafts. METHODS This study retrospectively evaluated 106 hips that underwent acetabular reconstruction using a KT plate between November 2000 and December 2010. Thirty-eight primary total hip arthoplasties (THAs) and 68 revised THAs were performed, and the mean duration of clinical follow-up was 8 years (5-14 years). Regarding reconstructing the acetabular bone defects, autografts were used in 37 hips, allografts in 68 hips, and A-W glass ceramics in 2 hips. RESULTS One hip exhibited radiological migration and no revision for aseptic loosening. The mean Merle d'Aubigné Clinical Score improved from 7.5 points (4-12 points) preoperatively to 10.9 points (9-18 points) at the last follow-up. The Kaplan-Meier survival rate for radiological migration of primary and revised THAs at 10 years was 100% and 97% (95% confidence interval: 96%-100%), respectively. Bone remodeling was evaluated using the radiological demarcation at the bone-to-bone interface, and an improvement of 100% in primary THAs and 94% in revised THAs was observed. CONCLUSION For massive bone defects, acetabular reconstruction using the KT plate with a structural bone grafting can yield successful results.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Kohei Tsuda
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Naofumi Okamoto
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
| | - Yusuke Ueda
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Osaka, Japan
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Sakata K, Yoshimura N, Tanabe K, Kito K, Nagase K, Iida H. Prediction of hypotension during spinal anesthesia for elective cesarean section by altered heart rate variability induced by postural change. Int J Obstet Anesth 2017; 29:34-38. [DOI: 10.1016/j.ijoa.2016.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 09/12/2016] [Accepted: 09/17/2016] [Indexed: 10/21/2022]
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Yokohata E, Kuwatsuka Y, Ohashi H, Terakura S, Kawashima N, Seto A, Kurahashi S, Ozawa Y, Goto T, Imahashi N, Nishida T, Miyao K, Sakemura R, Kato T, Sawa M, Kohno A, Sao H, Iida H, Kiyoi H, Naoe T, Miyamura K, Murata M. Impact of T-cell chimerism on relapse after cord blood transplantation for hematological malignancies: Nagoya Blood and Marrow Transplantation Group study. Bone Marrow Transplant 2017; 52:612-614. [PMID: 28067879 DOI: 10.1038/bmt.2016.323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- E Yokohata
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Y Kuwatsuka
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - H Ohashi
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan.,Division of Hematology, Toyota Memorial Hospital, Toyota, Japan
| | - S Terakura
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Kawashima
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - A Seto
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan.,Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Kurahashi
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Y Ozawa
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - T Goto
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Imahashi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Nishida
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Miyao
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - R Sakemura
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - T Kato
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - M Sawa
- Department of Hematology and Oncology, Anjo Kosei Hospital, Anjo, Japan
| | - A Kohno
- Department of Hematology and Oncology, JA Aichi Konan Kosei Hospital, Konan, Japan
| | - H Sao
- Department of Hematology, Meitetsu Hospital, Nagoya, Japan
| | - H Iida
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - H Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Naoe
- Department of Hematology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan.,Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Miyamura
- Department of Hematology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - M Murata
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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30
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Ohno H, Murata M, Ozu S, Matsuoka N, Kawamura H, Iida H. Midterm outcomes of high-flexion total knee arthroplasty on Japanese lifestyle. Acta Orthop Traumatol Turc 2016; 50:527-532. [PMID: 27681375 PMCID: PMC6197585 DOI: 10.1016/j.aott.2016.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 02/12/2016] [Accepted: 02/15/2016] [Indexed: 11/19/2022]
Abstract
Objective To evaluate the clinical outcomes after total knee arthroplasty (TKA) using the Genesis II posterior stabilized prosthesis with a high-flex insert during the mid-term follow-up and to assess its effect on the Japanese lifestyle. Materials and methods Fifty-three consecutive patients (8 men and 45 women) underwent primary TKA. The mean follow-up time was 76 months (5–9 years). Clinical results were assessed with the Japanese Orthopedic Association osteoarthritis knee rating score (JOA knee score), range of motion, and lifestyle changes. Results The postoperative JOA knee score improved significantly compared to the preoperative JOA knee score. The mean preoperative flexion range improved from 112° to 123° postoperatively (p < 0.05). Additionally, our findings showed that 39% of patients enjoyed a floor-sitting life preoperatively, but only 30% of patients enjoyed floor-sitting life postoperatively. Conclusion The postoperative range of knee motion and JOA knee score improved after TKA using the Genesis II posterior stabilized prosthesis with a high-flex insert, but the number of patients who enjoyed floor-sitting life decreased from 39% to 30% because of feelings of fear and discomfort. Level of Evidence: Level IV, Therapeutic study
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31
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Yamada Y, Yoshimura N, Yamaguchi S, Tanabe K, Iida H. Abstract PR515. Anesth Analg 2016. [DOI: 10.1213/01.ane.0000492899.23165.be] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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32
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Inada R, Murotani K, Iwamoto S, Kaibori M, Ishizaki M, Iida H, Matsui K, Oishi M, Mastumoto T, Michiura T, Inoue K, Mishima H, Kon M, Hamada M. P-062 Correlation of histological Tumor Regression Grading (TRG) with radiological response and long-term outcome after preoperative chemotherapy for Colorectal Liver Metastases: a propensity score matching analysis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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33
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Iida H, Akatsu Y, Mizukami K, Natori S, Matsukawa M, Takahashi K. Efficient and rapid synthesis of phenolic analogs of 4-phenylbutanoic acid using microwave-assisted Michael addition as a key reaction. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1155714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Hirokazu Iida
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, Yokohama, Kanagawa, Japan
| | - Yusuke Akatsu
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, Yokohama, Kanagawa, Japan
| | - Kazushi Mizukami
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, Yokohama, Kanagawa, Japan
| | - Sho Natori
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, Yokohama, Kanagawa, Japan
| | - Minako Matsukawa
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, Yokohama, Kanagawa, Japan
| | - Kie Takahashi
- Department of Biosciences, Kanto Gakuin University College of Science and Technology, Yokohama, Kanagawa, Japan
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Oe K, Iida H, Kawamura H, Ueda N, Nakamura T, Okamoto N, Ueda Y. Long-term results of acetabular reconstruction using three bulk bone graft techniques in cemented total hip arthroplasty for developmental dysplasia. Int Orthop 2015; 40:1949-54. [PMID: 26566640 DOI: 10.1007/s00264-015-3039-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/01/2015] [Indexed: 11/25/2022]
Abstract
PURPOSE The aims of this retrospective study were to firstly introduce three practical bulk bone graft techniques based on acetabular morphology for dysplasia and secondly evaluate the long-term durability of acetabular reconstruction using those techniques combined with cemented total hip arthroplasty (THA). METHODS The study comprised 101 consecutive THAs with a minimum follow-up of ten years; these procedures were categorised as being L shape (n = 58), Wall (n = 33) and D shape (n = 10) types. RESULTS At the last follow-up, all bone grafts acquired trabecular reorientation, and no evidence of revision for aseptic or radiological loosening was noted. CONCLUSIONS These bone graft techniques will be effective for improving the management of dysplasia in cemented THA by providing both acetabular reconstruction and cement containment.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan.
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan
| | - Hiroshi Kawamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan
| | - Narumi Ueda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan
| | - Tomohisa Nakamura
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan
| | - Naofumi Okamoto
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan
| | - Yusuke Ueda
- Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata City, Osaka, 573-1010, Japan
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35
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Bailey DL, Pichler BJ, Gückel B, Barthel H, Beer AJ, Bremerich J, Czernin J, Drzezga A, Franzius C, Goh V, Hartenbach M, Iida H, Kjaer A, la Fougère C, Ladefoged CN, Law I, Nikolaou K, Quick HH, Sabri O, Schäfer J, Schäfers M, Wehrl HF, Beyer T. Combined PET/MRI: Multi-modality Multi-parametric Imaging Is Here: Summary Report of the 4th International Workshop on PET/MR Imaging; February 23-27, 2015, Tübingen, Germany. Mol Imaging Biol 2015; 17:595-608. [PMID: 26286794 DOI: 10.1007/s11307-015-0886-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This paper summarises key themes and discussions from the 4th international workshop dedicated to the advancement of the technical, scientific and clinical applications of combined positron emission tomography (PET)/magnetic resonance imaging (MRI) systems that was held in Tübingen, Germany, from February 23 to 27, 2015. Specifically, we summarise the three days of invited presentations from active researchers in this and associated fields augmented by round table discussions and dialogue boards with specific topics. These include the use of PET/MRI in cardiovascular disease, paediatrics, oncology, neurology and multi-parametric imaging, the latter of which was suggested as a key promoting factor for the wider adoption of integrated PET/MRI. Discussions throughout the workshop and a poll taken on the final day demonstrated that attendees felt more strongly that PET/MRI has further advanced in both technical versatility and acceptance by clinical and research-driven users from the status quo of last year. Still, with only minimal evidence of progress made in exploiting the true complementary nature of the PET and MRI-based information, PET/MRI is still yet to achieve its potential. In that regard, the conclusion of last year's meeting "the real work has just started" still holds true.
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Affiliation(s)
- D L Bailey
- Department of Nuclear Medicine, Royal North Shore Hospital, Sydney, Australia
- Faculty of Health Sciences, University of Sydney, Sydney, Australia
| | - B J Pichler
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tübingen, Germany
| | - B Gückel
- Department of Interventional and Diagnostic Radiology, Eberhard Karls University, Tübingen, Germany
| | - H Barthel
- Department of Nuclear Medicine, Leipzig University, Leipzig, Germany
| | - A J Beer
- Department of Nuclear Medicine, Ulm University, Ulm, Germany
| | - J Bremerich
- Cardiothoracic Section, Department of Radiology and Nuclear Medicine, University of Basel Hospital, Basel, Switzerland
| | - J Czernin
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, USA
| | - A Drzezga
- Department of Nuclear Medicine, University Hospital Cologne, Cologne, Germany
| | - C Franzius
- Centre of Morphological and Molecular Diagnostics (ZeMoDi), MR- and PET/MRI; Centre of Nuclear Medicine and PET/CT, Bremen, Germany
| | - V Goh
- Division of Imaging Sciences and Biomedical Engineering, King's College London, London, UK
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - M Hartenbach
- Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - H Iida
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - A Kjaer
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging, Rigshospitalet and University of Copenhagen, Copenhagen, Denmark
| | - C la Fougère
- Department of Nuclear Medicine and Molecular Imaging, Eberhard Karls University Tübingen, Tübingen, Germany
| | - C N Ladefoged
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Copenhagen, Denmark
| | - I Law
- Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet, Copenhagen, Denmark
| | - K Nikolaou
- Department of Interventional and Diagnostic Radiology, Eberhard Karls University, Tübingen, Germany
| | - H H Quick
- Erwin L. Hahn Institute for MR Imaging, University of Duisburg-Essen, Essen, Germany
- High Field and Hybrid MR-Imaging, University Hospital Essen, Essen, Germany
| | - O Sabri
- Department of Nuclear Medicine, Leipzig University, Leipzig, Germany
| | - J Schäfer
- Department of Interventional and Diagnostic Radiology, Eberhard Karls University, Tübingen, Germany
| | - M Schäfers
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - H F Wehrl
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University, Tübingen, Germany
| | - T Beyer
- Center for Medical Physics and Biomedical Engineering, General Hospital Vienna, Medical University Vienna, 4L, Waehringer Guertel 18-20, 1090, Vienna, Austria.
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Koh E, Oe K, Takemura S, Iida H. Anterior Cruciate Ligament Reconstruction Using a Bone-Patellar Tendon-Bone Autograft to Avoid Harvest-Site Morbidity in Knee Arthroscopy. Arthrosc Tech 2015; 4:e179-84. [PMID: 26052497 PMCID: PMC4454825 DOI: 10.1016/j.eats.2015.01.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 01/13/2015] [Indexed: 02/03/2023] Open
Abstract
Although anterior cruciate ligament reconstruction using a bone-patellar tendon-bone (BPTB) autograft has many advantages (e.g., high strength and solid fixation), there are also several complications (e.g., anterior knee pain or kneeling pain) due to harvest-site morbidity associated with the use of this graft type compared with the use of hamstring tendon. Therefore the ultimate goal of anterior cruciate ligament reconstruction using a BPTB graft is to minimize harvest-site morbidity. We have used a technique for harvesting central-third BPTB grafts that involves only a 3-cm-long, longitudinal, curved incision in the medial tibial tuberosity for both graft harvesting and fixation. The purpose of this report is to describe the technique, which can avoid the harvest-site morbidities associated with BPTB autografts during knee arthroscopy. We believe that this less invasive reconstruction may reduce the harvest-site morbidities associated with BPTB grafts because it allows for BPTB graft harvesting without incising the synovial bursa or paratenon and mitigates scarring and adhesion formation.
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Affiliation(s)
| | - Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
- Address correspondence to Kenichi Oe, M.D., Department of Orthopaedic Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan.
| | | | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University, Hirakata, Japan
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Abstract
Using simple riboflavin related compounds as biomimetic catalysts, catalytic oxidation of various substrates with hydrogen peroxide or molecular oxygen can be performed selectively under mild conditions. The principle of these reactions is fundamental and will provide a wide scope for environmentally benign future practical methods.
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Affiliation(s)
- H. Iida
- Department of Chemistry
- Interdisciplinary Graduate School of Science and Engineering
- Shimane University
- Matsue 690-8504
- Japan
| | - Y. Imada
- Department of Chemical Science and Technology
- Tokushima University
- Tokushima 770-8506
- Japan
| | - S.-I. Murahashi
- Department of Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
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Nakamura T, Kushida T, Okamoto N, Oe K, Ikeura A, Li M, Ikehara S, Iida H. Induction of autoimmune arthritis after direct injection of bone marrow cells from arthritis-prone SKG/Jcl mice into bone cavity of normal mice. Biol Pharm Bull 2014; 37:1719-26. [PMID: 25366477 DOI: 10.1248/bpb.b14-00302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
SKG/Jcl (SKG) mice spontaneously develop T cell-mediated autoimmune arthritis and may be an effective model for studying human rheumatoid arthritis. We sought to confirm that arthritis in SKG mice was caused by stem cell disorders. We induced systemic arthritis in normal C57/BL6 (B6) mice (H-2(b) type) by injecting lineage-negative (lin(-)) immature cells isolated from bone marrow cells (BMCs) of SKG mice (H-2(d) type) directly into bone cavities. Twenty weeks later, we analyzed arthritis scores, hematoxylin-eosin (H-E) staining and tartrate-resistant acid phosphatase (TRAP) staining in ankle joints, H-2 type of hematolymphoid and osteoblast-like cells, serum levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) and percentages of CD4(+) T cells and osteoblast-like cells expressing receptor activator of nuclear factor kappa-B ligand (RANKL) in recipient mice. Donor-derived hematolymphoid cells and osteoblast-like cells had completely replaced donor-derived cells in the recipients (H-2(b) to H-2(d)). All recipients showed severe joint swelling with hyperemia and developed hypertrophic synovitis with lymphocytes accumulated around joints. All recipients also had higher TNF-α and IL-6 levels than untreated B6 controls. Furthermore, the percentages of CD4(+) T cells and osteoblast-like cells expressing RANKL and the number of TRAP(+) cells were greater in treated animals. Donor-derived hematolymphoid cells and osteoblast-like cells persisted in these recipients and promoted autoimmune arthritis and an increase in osteoclasts. Because autoimmune arthritis may be associated with abnormal lin(-) immature cells, patients with intractable autoimmune arthritis may be treated by replacing these cells with direct injection of lin(-) immature cells isolated from normal BMCs.
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Iida H, Watanabe K, Ohashi T. 123 * THE MORPHOLOGY OF THE THORAX AND HEART IN PATIENTS WITH PECTUS EXCAVATUM, AND THE CHANGES AFTER SURGICAL CORRECTION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mori S, Ito A, Sato S, Ako K, Tada E, Shibanuma K, Hattori Y, Iida H. Dose Rate Analyses around the Equatorial and Divertor Ports during ITER In-Vessel Components Maintenance. J NUCL SCI TECHNOL 2014. [DOI: 10.1080/00223131.2000.10874884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kushida T, Iida H. Bone marrow cell transplantation efficiently repairs tendon and ligament injuries. Front Cell Dev Biol 2014; 2:27. [PMID: 25364734 PMCID: PMC4207000 DOI: 10.3389/fcell.2014.00027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 06/18/2014] [Indexed: 12/14/2022] Open
Affiliation(s)
- Taketoshi Kushida
- Department of Orthopaedic Surgery, Kansai Medical University Hirakata, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Kansai Medical University Hirakata, Japan
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Oe K, Jingushi S, Iida H, Tomita N. Evaluation of the clinical performance of ultrahigh molecular weight polyethylene fiber cable using a dog osteosynthesis model. Biomed Mater Eng 2014; 23:329-38. [PMID: 23988705 DOI: 10.3233/bme-130757] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The purpose of this study was to assess the removability and biological reactivity of an ultrahigh molecular weight polyethylene (UHMWPE) fiber cable as a new biomaterial for osteosynthesis. We used a pull-out test and an implantation test to analyze the performance of the UHMWPE fiber cable using a dog model, and compared its characteristics with those of a wire cable and a soft wire. In the pull-out test, the UHMWPE fiber cable was as easy to remove as the soft wire, and both the UHMWPE fiber cable and the soft wire were significantly easier to remove than the wire cable. The fixation capability and the biological reactivity of the UHMWPE fiber cable were examined in an osteosynthesis model of the dog greater trochanter, and were compared with those of the soft wire. The bone union rate, assessed radiographically, was very similar when using the UHMWPE fiber cable and the soft wire. However, in the soft wire group, both the surface of the greater trochanter under the fixation material and the penetration area around the fixation material showed an increased tendency toward a biological reaction, including inflammation and granulation tissue formation, as compared to the UHMWPE fiber cable group. The UHMWPE fiber cable was as easily removed from the bone tissue as the soft wire, and was easier to remove than the wire cable. Additionally, the UHMWPE fiber cable caused reduced biological reactivity with the surrounding tissue, as compared with the soft wire. In conclusion, the UHMWPE fiber cable appeared to be a suitable fixation material for osteosynthesis.
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Affiliation(s)
- Kenichi Oe
- Department of Orthopaedic Surgery, Kansai Medical University, Osaka, Japan
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Uchida S, Wada T, Sakoda S, Ariumi A, Sakai A, Iida H, Nakamura T. Endoscopic shelf acetabuloplasty combined with labral repair, cam osteochondroplasty, and capsular plication for treating developmental hip dysplasia. Arthrosc Tech 2014; 3:e185-91. [PMID: 24749043 PMCID: PMC3986493 DOI: 10.1016/j.eats.2013.09.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 09/23/2013] [Indexed: 02/03/2023] Open
Abstract
In addition to the underlying shallow acetabular deformity, a patient with hip dysplasia has a greater risk of development of a labral tear, a cam lesion, and capsular laxity. This combination of abnormalities exacerbates joint instability, ultimately leading to osteoarthritis. Unsurprisingly, only repairing the acetabular labrum remains controversial, and the outcome is unpredictable. In this technical note, with video, we demonstrate an entirely endoscopic approach for simultaneously repairing the most common mechanical abnormalities found in moderate hip dysplasia: labral repair, cam osteochondroplasty, capsular plication, and shelf acetabuloplasty using an autologous iliac bone graft.
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Affiliation(s)
- Soshi Uchida
- Departments of Orthopaedic Surgery, Wakamatsu Hospital for the University of Occupational and Environmental Health, University of Occupational and Environmental Health, Kitakyushu
- Address correspondence to Soshi Uchida, M.D., Ph.D., 1-17-1, Department of Orthopaedic Surgery, Faculty of Medicine, Wakamatsu Hospital for the University of Occupational and Environmental Health, Hamamachi, Wakamatsu, Kitakyushu, Fukuoka 808-0024, Japan.
| | - Takahiko Wada
- Hirakata Hospital, Kansai Medical University, Hirakata, Japan
| | - Shinsuke Sakoda
- Departments of Orthopaedic Surgery, Wakamatsu Hospital for the University of Occupational and Environmental Health, University of Occupational and Environmental Health, Kitakyushu
| | - Akihiro Ariumi
- Departments of Orthopaedic Surgery, Wakamatsu Hospital for the University of Occupational and Environmental Health, University of Occupational and Environmental Health, Kitakyushu
| | - Akinori Sakai
- Departments of Orthopaedic Surgery, Wakamatsu Hospital for the University of Occupational and Environmental Health, University of Occupational and Environmental Health, Kitakyushu
| | - Hirokazu Iida
- Hirakata Hospital, Kansai Medical University, Hirakata, Japan
| | - Toshitaka Nakamura
- Departments of Orthopaedic Surgery, Wakamatsu Hospital for the University of Occupational and Environmental Health, University of Occupational and Environmental Health, Kitakyushu
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Atsuta Y, Suzuki R, Yamashita T, Fukuda T, Miyamura K, Taniguchi S, Iida H, Uchida T, Ikegame K, Takahashi S, Kato K, Kawa K, Nagamura-Inoue T, Morishima Y, Sakamaki H, Kodera Y. Continuing increased risk of oral/esophageal cancer after allogeneic hematopoietic stem cell transplantation in adults in association with chronic graft-versus-host disease. Ann Oncol 2014; 25:435-41. [PMID: 24399081 DOI: 10.1093/annonc/mdt558] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND The number of long-term survivors after hematopoietic stem cell transplantation (HSCT) showed steady increase in the past two decades. Second malignancies after HSCT are a devastating late complication. We analyzed the incidence of, risk compared with that in the general population, and risk factors for secondary solid cancers. PATIENTS AND METHODS Patients were 17 545 adult recipients of a first allogeneic stem cell transplantation between 1990 and 2007 in Japan. Risks of developing secondary solid tumors were compared with general population by using standard incidence ratios (SIRs). RESULTS Two-hundred sixty-nine secondary solid cancers were identified. The cumulative incidence was 0.7% [95% confidence interval (CI), 0.6%-0.9%] at 5 years and 1.7% (95% CI, 1.4%-1.9%) at 10 years after transplant. The risk was significantly higher than that in the general population (SIR=1.8, 95% CI, 1.5-2.0). Risk was higher for oral cancer (SIR=15.7, 95% CI, 12.1-20.1), esophageal cancer (SIR=8.5, 95% CI, 6.1-11.5), colon cancer (SIR=1.9, 95% CI, 1.2-2.7), skin cancer (SIR=7.2, 95% CI, 3.9-12.4), and brain/nervous system cancer (SIR=4.1, 95% CI, 1.6-8.4). The risk of developing oral, esophageal, or skin cancer was higher at all times after 1-year post-transplant. Extensive-type chronic graft-versus-host disease (GVHD) was a significant risk factor for the development of all solid tumors (RR=1.8, P<0.001), as well as for oral (RR=2.9, P<0.001) and esophageal (RR=5.3, P<0.001) cancers. Limited-type chronic GVHD was an independent risk factor for skin cancers (RR=5.8, P=0.016). CONCLUSION Recipients of allogeneic HSCT had a significantly higher ∼2-fold risk of developing secondary solid cancers than the general population. Lifelong screening for high-risk organ sites, especially oral or esophageal cancers, is important for recipients with active, or a history of, chronic GVHD.
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Affiliation(s)
- Y Atsuta
- Department of HSCT Data Management and Biostatistics, Nagoya University Graduate School of Medicine, Nagoya
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Matsuya H, Kushida T, Asada T, Umeda M, Wada T, Iida H. Regenerative effects of transplanting autologous mesenchymal stem cells on corticosteroid-induced osteonecrosis in rabbits. Mod Rheumatol 2014. [DOI: 10.3109/s10165-008-0023-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wada T, Son Y, Ozaki Y, Nomura S, Iida H. Clinical and radiographic results from a 2-year comparison of once-weekly versus twice-weekly administration of etanercept in biologics-naive patients with rheumatoid arthritis. Mod Rheumatol 2014. [DOI: 10.3109/s10165-011-0591-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Takahiko Wada
- Department of Orthopaedic Surgery, Hirakata Hospital, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Osaka 573-1191, Japan
- Department of Rheumatology, Hirakata Hospital, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Osaka 573-1191, Japan
| | - Yonsu Son
- Department of Rheumatology, Hirakata Hospital, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Osaka 573-1191, Japan
| | - Yoshiro Ozaki
- Department of Rheumatology, Hirakata Hospital, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Osaka 573-1191, Japan
| | - Shosaku Nomura
- Department of Internal Medicine, Hirakata Hospital, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Osaka 573-1191, Japan
| | - Hirokazu Iida
- Department of Orthopaedic Surgery, Hirakata Hospital, Kansai Medical University, 2-3-1 Shin-machi, Hirakata, Osaka 573-1191, Japan
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Tatsumi H, Furuichi T, Nakano M, Toyota M, Hayakawa K, Sokabe M, Iida H. Mechanosensitive channels are activated by stress in the actin stress fibres, and could be involved in gravity sensing in plants. Plant Biol (Stuttg) 2014; 16 Suppl 1:18-22. [PMID: 24016318 DOI: 10.1111/plb.12095] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 07/18/2013] [Indexed: 05/14/2023]
Abstract
Mechanosensitive (MS) channels are expressed in a variety of cells. The molecular and biophysical mechanism involved in the regulation of MS channel activities is a central interest in basic biology. MS channels are thought to play crucial roles in gravity sensing in plant cells. To date, two mechanisms have been proposed for MS channel activation. One is that tension development in the lipid bilayer directly activates MS channels. The second mechanism proposes that the cytoskeleton is involved in the channel activation, because MS channel activities are modulated by pharmacological treatments that affect the cytoskeleton. We tested whether tension in the cytoskeleton activates MS channels. Mammalian endothelial cells were microinjected with phalloidin-conjugated beads, which bound to stress fibres, and a traction force to the actin cytoskeleton was applied by dragging the beads with optical tweezers. MS channels were activated when the force was applied, demonstrating that a sub-pN force to the actin filaments activates a single MS channel. Plants may use a similar molecular mechanism in gravity sensing, since the cytoplasmic Ca(2+) concentration increase induced by changes in the gravity vector was attenuated by potential MS channel inhibitors, and by actin-disrupting drugs. These results support the idea that the tension increase in actin filaments by gravity-dependent sedimentation of amyloplasts activates MS Ca(2+) -permeable channels, which can be the molecular mechanism of a Ca(2+) concentration increase through gravistimulation. We review recent progress in the study of tension sensing by actin filaments and MS channels using advanced biophysical methods, and discuss their possible roles in gravisensing.
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Affiliation(s)
- H Tatsumi
- Nagoya University Graduate School of Medicine, Nagoya, Japan
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Sugano N, Iida H, Akiyama H, Takatori Y, Nagoya S, Hasegawa M, Kabata T, Hachiya Y, Yasunaga Y. Nationwide investigation into adverse tissue reactions to metal debris after metal-on-metal total hip arthroplasty in Japan. J Orthop Sci 2014; 19:85-9. [PMID: 24338047 DOI: 10.1007/s00776-013-0490-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 10/12/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND Adverse reactions to metal debris (ARMD) after receiving metal-on-metal (MoM) hip implants is a recent concern. However, no epidemiologic study has examined ARMD for MoM hip implants in Japan. The purposes of this study were to research the incidence of ARMD and to identify poorly performing MoM hip implants in Japan. METHODS From 2000 to 2011, 7 companies provided 23,226 MoM implants in Japan. A questionnaire regarding ARMD was sent to 101 hospitals at which 62% of the 23,226 MoM implants had been used. RESULTS Replies to the questionnaire were received from 82 hospitals. In these hospitals, surface hip replacement types (SRs) were used in 606 hips and stemmed types were used in 12,961 hips. ARMD were reported in 3 hips (0.5%) with SRs and 160 hips (1.2%) with stemmed types. ARMD in the 3 hips with SRs were asymptomatic and no revisions were performed. Among AMRD with stemmed implants, revision was performed in 83 hips and excision of an ARMD lesion was performed in 3 hips. The remaining 74 hips were asymptomatic and careful follow-up was continued. A significant difference in reoperation rate was evident between SRs (0%) and stemmed types (0.7%). Incidences of ARMD were significantly higher with Ultamet (P = 0.005), Conserve (P < 0.001), and Cormet (P < 0.001) MoM bearing couples than with Metasul bearings. CONCLUSIONS The incidence of ARMD in large surgical volume hospitals in Japan from 2000 to 2011 was estimated to be 0.5% with SRs and 1.2% with stemmed types. The reoperation rate was significantly higher with stemmed types than with SRs. Three brands of MoM stemmed implants were identified as showing a higher incidence of ARMD.
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Affiliation(s)
- Nobuhiko Sugano
- Department of Orthopaedic Medical Engineering, Osaka University Graduate School of Medicine, Yamadaoka 2-2 Suita, Osaka, 565-0871, Japan,
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Iida H, Furuichi T, Nakano M, Toyota M, Sokabe M, Tatsumi H. New candidates for mechano-sensitive channels potentially involved in gravity sensing in Arabidopsis thaliana. Plant Biol (Stuttg) 2014; 16 Suppl 1:39-42. [PMID: 23731064 DOI: 10.1111/plb.12044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 04/08/2013] [Indexed: 05/14/2023]
Abstract
The mechano-sensitive channels of plants may sense increases in tension induced by mechanical stimuli, such as touch, wind and turgor pressure, and a gravitational stimulus. Recent studies have identified plant homologues of the bacterial mechano-sensitive channel MscS, which is gated by membrane tension and reduces intracellular osmolality by releasing small osmolytes from bacterial cells. However, the physiological roles of these homologues have not yet been clearly elucidated, and only two of them have been shown to be involved in the protection of osmotically stressed plastids in Arabidopsis thaliana. We identified another group of candidates for mechano-sensitive channels in Arabidopsis, named MCA1 and MCA2, whose homologues are exclusively found in plant genomes. MCA1 and MCA2 are composed of 421 and 416 amino acid residues, respectively, share 73% homology in their amino acid sequences, and are not homologous to any known ion channels or transporters. Our structural study revealed that the N-terminal region (one to 173 amino acids) of both proteins was necessary and sufficient for Ca(2+) influx activity. Interestingly, this region had one putative transmembrane segment containing an Asp residue whose substitution mutation abolished this activity. Our physiological study suggested that MCA1 expressed at the root tip was required for sensing the hardness of the agar medium or soil. In addition, MCA1 and MCA2 were shown to be responsible for hypo-osmotic shock-induced increases in [Ca(2+) ]cyt . Thus, both proteins appear to be involved in the process of sensing mechanical stresses. We discussed the possible role of both proteins in sensing mechanical and gravitational stimuli.
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Affiliation(s)
- H Iida
- Department of Biology, Tokyo Gakugei University, Tokyo, Japan
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Kamijo Y, Iida H, Saito K, Furutera R, Ishibashi Y. Normal peritoneum after nine years of peritoneal dialysis with biocompatible dialysate: a case report. Perit Dial Int 2013; 33:712-4. [PMID: 24335133 DOI: 10.3747/pdi.2012.00306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Y Kamijo
- Division of Nephrology Japanese Red Cross Medical Center Tokyo, Japan
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