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Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association

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https://www.readbyqxmd.com/read/28215505/the-aging-micromechanisms-of-alumina-matrix-composite-amc-used-in-total-hip-arthroplasty
#1
Shinji Horie, Yasuhito Takahashi, Takaaki Shishido, Toshinori Masaoka, Toshiyuki Tateiwa, Kengo Yamamoto
BACKGROUND: The aim of the present study is to simulate and better understand the long-term interplay between alumina matrix composite (AMC) femoral head and aqueous environment. In particular, we focused on clarifying the role of alumina grains on zirconia phase stability and mechanical equilibrium in AMC head during aging processes in a clinically-relevant time frame. METHODS: The tested AMC head consists of an alumina matrix (82 vol.%) reinforced by yttria-stabilized zirconia (17 vol...
February 16, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28215392/the-clinical-outcomes-of-atlanto-axial-arthrodesis-in-patients-with-rheumatoid-arthritis-assessment-according-to-the-japanese-orthopaedic-association-cervical-myelopathy-evaluation-questionnaire-joacmeq
#2
Haku Iizuka, Yoichi Iizuka, Tokue Mieda, Daisuke Tsunoda, Ryoichi Kobayashi, Yasunori Sorimachi
PURPOSE: The purpose of this study was to evaluate the clinical outcomes of atlanto-axial arthrodesis in rheumatoid arthritis (RA) patients with cervical myelopathy using the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ). METHODS: Twenty patients who underwent surgery to treat atlanto-axial subluxation (AAS) were reviewed. RESULTS: The rates of success rates for each domain were as follows: cervical spine function, 11 of 18 patients (61...
February 15, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28209399/primary-non-germinal-center-b-cell-like-diffuse-large-b-cell-lymphoma-arising-from-the-patella
#3
Shun Yamamoto, Takaaki Tanaka, Kazuya Sato, Ryosuke Denda, Yoshio Kumagae, Hitoshi Sekiya, Masaru Kojima
No abstract text is available yet for this article.
February 13, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28209398/pulmonary-embolism-associated-with-upper-extremity-deep-venous-thrombosis-after-shoulder-arthroscopy-a-case-report
#4
Hisato Watanabe, Yuichi Nagase, Kazuya Tamai, Sakae Tanaka
No abstract text is available yet for this article.
February 13, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28202302/short-term-outcomes-of-patients-being-treated-for-chronic-intractable-pain-at-a-liaison-clinic-and-exacerbating-factors-of-prolonged-pain-after-treatment
#5
Tomoko Tetsunaga, Tomonori Tetsunaga, Keiichiro Nishida, Masato Tanaka, Yoshihisa Sugimoto, Tomoyuki Takigawa, Toshifumi Ozaki
BACKGROUND: Although a multidisciplinary approach is often recommended to treat intractable pain, this approach does not completely prevent uncontrolled pain in some patients. The aim of this retrospective study was to investigate the exacerbating factors of prolonged, intractable pain among patients being treated at a pain liaison clinic. METHODS: The participants of this study were 94 outpatients (32 men, 62 women) with chronic intractable pain who visited our hospital between April 2013 and February 2015...
February 12, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28202301/preoperative-assessment-of-the-ureter-with-dual-phase-contrast-enhanced-computed-tomography-for-lateral-lumbar-interbody-fusion-procedures
#6
Shunsuke Fujibayashi, Bungo Otsuki, Hiroaki Kimura, Shimei Tanida, Kazutaka Masamoto, Shuichi Matsuda
BACKGROUND: Performing the minimally invasive lateral lumbar interbody fusion (LIF), such as the extreme lateral interbody fusion (XLIF) and oblique lateral interbody fusion (OLIF), through a retroperitoneal approach has become increasingly popular. Although urological injury is a major complication of LIF, the anatomical location of the ureter and its risk of injury have not been assessed. The purpose of this study was to evaluate the efficacy of dual-phase contrast-enhanced computed tomography for assessing the location of the ureter and risk of its injury in consecutive LIF cases...
February 12, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28202300/multiple-concave-rib-head-resection-improved-correction-rate-of-posterior-spine-fusion-in-treatment-of-adolescent-idiopathic-scoliosis
#7
Takashi Namikawa, Hiroshi Taneichi, Satoshi Inami, Hiroshi Moridaira, Daisaku Takeuchi, Yo Shiba, Yutaka Nohara
BACKGROUND: Hybrid constructs have been widely used to surgically correct thoracic adolescent idiopathic scoliosis (AIS). To enhance the correction obtained with hybrid constructs, we perform concave rib head resection and convex costovertebral release as posterior release procedures. The objective of the study was to evaluate coronal and sagittal curve correction in patients with adolescent idiopathic scoliosis (AIS) treated with hybrid constructs combined with concave rib head resection and convex transverse process resection as posterior release procedures...
February 12, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28209341/two-stage-correction-using-the-taylor-spatial-frame-for-severe-hindfoot-deformity-in-a-patient-with-marfan-syndrome-a-case-report
#8
Suzuyo Ohashi, Kazuya Ikoma, Masamitsu Kido, Yoshinobu Oka, Wook-Cheol Kim, Toshikazu Kubo
No abstract text is available yet for this article.
February 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28209340/ultrasound-guided-injection-for-de-quervain-s-disease-accuracy-and-its-influenceable-anatomical-variances-in-first-extensor-compartment-of-fresh-cadaver-wrists
#9
Jong Woo Kang, Jong Woong Park, Soon Hyuck Lee, Jong Hoon Park, Seung Bum Han, Si Young Park, Woong Kyo Jeong
BACKGROUND: This study was designed to evaluate the accuracy of ultrasound-guided injection targeting EPB tendon sheath and influenceable anatomical variances to the accuracy in the first extensor compartment of fresh cadaver wrists. METHODS: Thirty wrists of 15 cadavers were used. The wrists were divided into right-sided wrists (control group) and left-sided wrists (group A) to compare the accuracy of the manual injection technique (control group) and ultrasound-guided injection technique (group A) targeting EPB tendon sheath...
February 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28209339/vitamin-e-stabilized-highly-crosslinked-polyethylenes-the-role-and-effectiveness-in-total-hip-arthroplasty
#10
Kengo Yamamoto, Toshiyuki Tateiwa, Yasuhito Takahashi
Morphology and design of ultra-high molecular weight polyethylene (UHMWPE or simply PE) acetabular components used in total hip arthroplasty (THA) have been evolving for more than half a century. Since the late-1990s, there were two major technological innovations in PE emerged from necessity to overcome the wear-induced periprosthetic osteolysis, i.e., the development of highly crosslinked PEs (HXLPEs). There are many literature reporting that radiation crosslinked and remelted/annealed (first-generation) HXLPEs markedly reduced the incidence of osteolysis and aseptic loosening...
February 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28190569/analyzing-on-the-location-of-the-bicipital-groove-for-alignment-in-shoulder-arthroplasty-of-chinese
#11
Jian Zhou, Linlin Zhang, Ling Shen, Ming Zhu, Feng Zheng
BACKGROUND: Many anthropometric studies of the normal glenohumeral relationship have been performed for the implant design and to identify reference points for the correct placement of the prosthesis in glenohumeral joint replacement. However, whether those implantation marks, which adopted from European or American, can achieve the same precision to Eastern Asian, specifically Chinese is still unknown. MATERIALS AND METHODS: One hundred eighty healthy were scanned using CT...
February 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28190568/predictable-factors-of-deep-venous-thrombosis-in-patients-undergoing-spine-surgery
#12
Terumasa Ikeda, Hiroshi Miyamoto, Kazuki Hashimoto, Masao Akagi
BACKGROUND: DVT is one of the major postoperative complications of joint replacement surgery of the lower extremity which can cause catastrophic complications such as pulmonary embolism. However, little is known about the incidence of DVT after spine surgery. The purpose of this study was to examine predictable factors of DVT after spine surgery. METHODS: This study included 194 patients who underwent spine surgery (104 males, 90 females, mean age 65.7 years). Postoperative DVT was detected using duplex ultrasonography (DUS)...
February 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28187993/a-rare-manifestation-of-extraskeletal-myxoid-chondrosarcoma-with-a-huge-expanding-hematoma
#13
Toshinori Omori, Tomohiro Fujiwara, Toshiyuki Kunisada, Ken Takeda, Joe Hasei, Aki Yoshida, Hiroyuki Yanai, Toshifumi Ozaki
No abstract text is available yet for this article.
February 7, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28185726/comparison-of-transportal-and-outside-in-techniques-for-posterolateral-femoral-tunnel-drilling-in-double-bundle-acl-reconstruction-three-dimensional-ct-analysis-of-bone-tunnel-geometry
#14
Shunichiro Kambara, Hiroshi Nakayama, Motoi Yamaguchi, Akio Matsumoto, Ken Sasaki, Kaori Kashiwa, Tomoya Iseki, Shinichi Yoshiya
PURPOSE: To comparatively analyze the geometry of the posterolateral femoral (PL) tunnel in double-bundle ACL reconstruction between far anteromedial transportal (TP) and outside-in (OI) drilling techniques based on three-dimensional computed tomography (3DCT) image analysis. METHODS: Forty patients who underwent anatomic double-bundle hamstring ACL reconstruction using the TP (n: 20) or OI (n: 20) method with postoperative CT data available were included in the study...
February 6, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28173987/primary-extradural-malignant-melanoma-of-the-spine-a-case-report
#15
Shingo Yoshizaki, Akihiko Inokuchi, Takahiro Hamada, Kenjiro Nishida, Ryuta Imamura, Hiroyuki Nakahara, Takashi Komatsu, Takeshi Arizono
No abstract text is available yet for this article.
February 4, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28169108/prevalence-and-clinical-significance-of-hypertrophic-labrum-in-non-dysplastic-hips
#16
Yong-Chan Ha, Young-Kyun Lee, Kyung-Hoi Koo, Ki-Bum Kwon, Sang-Heon Song
BACKGROUND: Hypertrophic labrum in dysplastic hip has been frequently reported and is known as limbus in developmental dysplasia of the hip. However, hypertrophic labrum without hip dysplasia has not been reported to date. The purpose of this study was to define hypertrophic labrum and to investigate the prevalence and clinical significance of an abnormally hypertrophic labrum in non-dysplastic hips. METHODS: Between 2007 and 2014, direct CT arthrography was performed in 464 patients (470 hips) who had chronic groin pain and positive impingement or Faber test...
February 3, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28162856/lateral-dislocation-of-the-elbow-with-concomitant-lateral-epicondyle-fracture-a-case-report-and-review-of-the-literature
#17
Akira Ando, Yoshihiro Hagiwara, Masashi Koide, Masahiro Yamashiro, Michimasa Matsuda, Eiji Itoi
No abstract text is available yet for this article.
February 2, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28161236/minimally-invasive-decompression-surgery-for-lumbar-spinal-stenosis-with-degenerative-scoliosis-predictive-factors-of-radiographic-and-clinical-outcomes
#18
Akihito Minamide, Munehito Yoshida, Hiroki Iwahashi, Andrew K Simpson, Hiroshi Yamada, Hiroshi Hashizume, Yukihiro Nakagawa, Hiroshi Iwasaki, Shunji Tsutsui, Ryohei Kagotani, Mayumi Sonekatsu, Takahide Sasaki, Kazunori Shinto, Tsuyoshi Deguchi
There is ongoing controversy regarding the most appropriate surgical treatment for lumbar spinal stenosis (LSS) with concurrent degenerative lumbar scoliosis (DLS): decompression alone, decompression with limited spinal fusion, or long spinal fusion for deformity correction. The coexistence of degenerative stenosis and deformity is a common scenario; Nonetheless, selecting the appropriate surgical intervention requires thorough understanding of the patients clinical symptomatology as well as radiographic parameters...
February 1, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28161235/practical-use-of-imaging-technique-for-management-of-bone-and-soft-tissue-tumors
#19
Shinji Miwa, Takanobu Otsuka
Imaging modalities including radiography, computed tomography (CT), and magnetic resonance imaging (MRI) are necessary for the diagnosis of bone and soft tissue tumors. The history of imaging began with the discovery of X-rays in the 19th century. The development of CT, MRI, ultrasonography, and positron emission tomography (PET) have improved the management of bone and soft tissue tumors. X-ray imaging and CT scans enable the evaluation of bone destruction, periosteal reaction, sclerotic changes in lesions, condition of cortical bone, and ossification...
February 1, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28161234/acute-common-femoral-artery-lesion-after-direct-anterior-approach-for-tha-a-case-report-and-literature-review
#20
Giuseppe Marongiu, Stefano Rigotti, Antonio Campacci, Claudio Zorzi
No abstract text is available yet for this article.
February 1, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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