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

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https://www.readbyqxmd.com/read/29729950/an-algorithmic-strategy-of-surgical-intervention-for-cervical-degenerative-kyphosis
#1
Hiroshi Miyamoto, Terumasa Ikeda, Kazuki Hashimoto, Masao Akagi
PURPOSE: Correction surgery for cervical degenerative kyphosis (CDK) may carry a greater risk of causing neural complications such as spinal cord injury and C5 nerve palsy because spinal canal stenosis, osteoarthritis of the facet, and consequent foraminal stenosis may coexist with CDK. We have produced an algorithmic strategy of surgical intervention for CDK, and report the outcome. METHODS: Thirty-one patients who underwent correction surgery for CDK, with a kyphotic angle of 20° or more (from 20 to 74) were involved...
May 2, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29728303/establishment-of-reference-scores-and-interquartile-ranges-for-the-japanese-orthopaedic-association-back-pain-evaluation-questionnaire-joabpeq-in-patients-with-low-back-pain
#2
Ryoji Tominaga, Miho Sekiguchi, Koji Yonemoto, Tatsuyuki Kakuma, Shin-Ichi Konno
BACKGROUND: The Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) was developed in 2007, including the five domains of Pain-related disorder, Lumbar spine dysfunction, Gait disturbance, Social life disturbance, and Psychological disorder. It is used by physicians to evaluate treatment efficacy by comparing scores before and after treatment. However, the JOABPEQ does not allow evaluation of the severity of a patient's condition compared to the general population at a single time point...
May 1, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29724468/trends-in-isolated-meniscus-repair-and-meniscectomy-in-japan-2011-2016
#3
Hisako Katano, Hideyuki Koga, Nobutake Ozeki, Koji Otabe, Mitsuru Mizuno, Makoto Tomita, Takeshi Muneta, Ichiro Sekiya
BACKGROUND: Meniscus surgery is the most commonly performed orthopedic surgery, and despite recent emphasis on saving the meniscus, the current status of meniscus surgeries is little known in many countries, including Japan. The National Database of Health Insurance Claims and Specific Health Checkups of Japan and the Statistics of Medical Care Activities in Public Health Insurance track meniscus surgeries through health insurance claims. The National Database provides the numbers for 2014 and 2015, and the Statistics of Medical Care Activities provides the numbers from June 2011 to June 2016...
April 30, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29705178/three-dimensional-model-based-navigation-assisted-bone-recontouring-of-the-distal-end-of-the-humerus-a-case-report
#4
Masayoshi Ikeda, Yuka Kobayashi, Ikuo Saito, Takehiko Takagi, Takayuki Ishii, Ayuko Shimizu, Daisuke Nakajima, Masahiko Watanabe
No abstract text is available yet for this article.
April 25, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29705177/the-impact-of-exercise-and-vitamin-d-supplementation-on-physical-function-in-community-dwelling-elderly-individuals-a-randomized-trial
#5
Kana Aoki, Mayumi Sakuma, Naoto Endo
BACKGROUND: We investigated the impact of exercise and vitamin D supplementation on physical function and locomotor dysfunction in community-dwelling elderly individuals. METHODS: In total, 148 community-dwelling elderly individuals (aged ≥60 years) who were not taking osteoporosis medications participated in a 24-week intervention. The participants were randomly divided into an exercise group, vitamin D group, and exercise and vitamin D group. The participants and outcome-assessing staff were not blinded to group assignment...
April 25, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29705176/natural-history-of-scoliosis-in-cerebral-palsy-and-risk-factors-for-progression-of-scoliosis
#6
Kiyoshi Yoshida, Ichiro Kajiura, Tsunehiko Suzuki, Hidehiko Kawabata
BACKGROUND: Scoliosis in cerebral palsy (CP) often occurs and causes a disturbance in daily life. The purpose of this study was to investigate the natural history of scoliosis in cerebral palsy and determine risk factors for the progression of scoliosis using multivariate analyses. METHODS: We revised 113 patients with CP (47 males and 66 females) who had scoliosis with a curve of at least 10° were reviewed and retrospectively investigated these cases of scoliosis and analyzed the risk factors for the progression of this condition...
April 25, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29699906/comparisons-of-direct-costs-outcomes-and-cost-utility-of-decompression-surgery-with-fusion-versus-decompression-alone-for-degenerative-lumbar-spondylolisthesis
#7
Mitsuru Yagi, Nobuyuki Fujita, Eijiro Okada, Osahiko Tsuji, Narihito Nagoshi, Takashi Tsuji, Masaya Nakamura, Morio Matsumoto, Kota Watanabe
BACKGROUND: Cost-utility analysis of surgery for degenerative lumber spondylolisthesis (DS) is essential for healthcare providers and patients to select appropriate treatment. The purpose of this study was to review the cost-utility of decompression alone versus decompression with fusion for DS. METHODS: A retrospective review of 99 consecutive patients who were treated for Meyerding grade 1 DS at two representative spine centers was performed. Patients with significant spinal instability were treated by decompression with fusion (F group, 40 patients); all others were treated by decompression surgery alone (D group, 59 patients)...
April 23, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29699905/tibia-hindfoot-turn-up-rotationplasty-in-uncontrollable-infection-after-total-femoral-resection-report-of-two-cases
#8
Ankhbayar Enkhbaatar, Chang-Bae Kong, Won Seok Song, Wan Hyeong Cho, Jae-Soo Koh, Dae-Geun Jeon, Soo-Yong Lee
No abstract text is available yet for this article.
April 23, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29680168/the-degeneration-of-adjacent-intervertebral-discs-negatively-influence-union-rate-of-osteoporotic-vertebral-fracture-a-multicenter-cohort-study
#9
Mohammad Suhrab Rahmani, Shinji Takahashi, Masatoshi Hoshino, Kazushi Takayama, Ryuichi Sasaoka, Tadao Tsujio, Hiroyuki Yasuda, Fumiaki Kanematsu, Hiroshi Kono, Hiromitsu Toyoda, Hiroaki Nakamura
BACKGROUND: With the increasing aging population in developed countries, there has been an associated increased prevalence of osteoporotic vertebral fracture (OVF). Many previous reports have attempted to predict the risk of delayed union associated with OVF. However, the role of endplate failure and the degeneration of adjacent intervertebral discs, and their association with delayed union has received little attention. The aim of this study was to evaluate the endplate fracture and disc degeneration rank as risk factors for delayed union...
April 18, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29657105/initial-stability-of-a-highly-porous-titanium-cup-in-an-acetabular-bone-defect-model
#10
Kensei Yoshimoto, Yasuharu Nakashima, Miyo Wakiyama, Daisuke Hara, Akihiro Nakamura, Mikio Iwamoto
BACKGROUNDS: The purpose of this study was to quantify the initial stability of a highly porous titanium cup using an acetabular bone defect model. METHODS: The maximum torque of a highly porous titanium cup, with a pore size of 640 μm and porosity of 60%, was measured using rotational and lever-out torque testing and compared to that of a titanium-sprayed cup. The bone models were prepared using a polyurethane foam block and had three levels of bone coverage: 100, 70, and 50%...
April 12, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29628286/school-scoliosis-screening-by-moir%C3%A3-topography-overview-for-33-years-in-miyazaki-japan
#11
Hiroshi Kuroki, Takuya Nagai, Etsuo Chosa, Naoya Tajima
BACKGROUND: Since 1981, we have performed school scoliosis screening (SSS) using Moiré topography in Miyazaki, Japan and attained a certain result in detecting scoliosis. However, this screening system was discontinued due to cessation of repair and production of Moiré topographic equipment. The purpose of this study was to make clear both the results and the problems of SSS by Moiré topography on the basis of our past 33 years' experiences. METHODS: The subjects were 689,293 students (5th grade boys in 200,329, 5th grade girls in 191,919, 8th grade boys in 151,351, and 8th grade girls in 145,694) who were screened by Moiré topography between 1981 and 2013...
April 5, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29627140/difference-in-the-fusion-rate-and-bone-formation-between-artificial-bone-and-iliac-autograft-inside-an-inter-body-fusion-cage-a-comparison-between-porous-hydroxyapatite-type-1-collagen-composite-and-autologous-iliac-bone
#12
Junichi Kushioka, Takashi Kaito, Takahiro Makino, Hiroyasu Fujiwara, Hiroyuki Tsukazaki, Shota Takenaka, Yusuke Sakai, Hideki Yoshikawa
BACKGROUND: Lateral inter-body fusion (LIF) using cages with a large bone grafting space can lead to a shortage of autologous grafting materials. The use of artificial bone is an option to increase the volume of grafting materials. However, the rate of bony fusion for these materials compared to that of autologous bone is unclear. METHODS: The bone fusion rate for artificial bone (HAp/Col) and autologous iliac bone (IBG) graft among 23 patients who had undergone LIF (total 66 disc levels) combined with multilevel posterior corrective fusion for the treatment of adult spinal deformity was retrospectively evaluated...
April 4, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29610008/surgical-outcomes-of-spinal-cord-and-cauda-equina-ependymoma-postoperative-motor-status-and-recurrence-for-each-who-grade-in-a-multicenter-study
#13
Kazuyoshi Kobayashi, Kei Ando, Fumihiko Kato, Tokumi Kanemura, Koji Sato, Mitsuhiro Kamiya, Yoshihiro Nishida, Naoki Ishiguro, Shiro Imagama
BACKGROUND: The goals of the study are to analyze postoperative outcomes and recurrence in cases of spinal cord and cauda equina ependymoma in each World Health Organization (WHO) Grade, and to examine the influence of extent of surgical removal on prognosis. Spinal ependymoma has a relatively high frequency among intramedullary spinal cord tumors. The tumor is classified in WHO guidelines as grades I, II, and III, but few studies have examined postoperative prognosis based on these grades...
March 30, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29610007/conventional-joa-score-for-cervical-myelopathy-has-a-rater-s-bias-in-comparison-with-joacmeq
#14
Noboru Hosono, Shota Takenaka, Yoshihiro Mukai, Kosuke Tateishi, Yasushi Fujiwara, Yuichiro Morishita, Hiroaki Konishi
BACKGROUND: The JOA (Japan Orthopaedic Association) score has been a standard outcome measure to evaluate cervical myelopathy in Japan. Despite its reliability and convenience, there can be a rating bias in the JOA score. The current study was conducted to delineate the rater's bias of the JOA score by comparing it with a new objective outcome measure. METHODS: Two hundred and thirty four operative candidates with cervical myelopathy were included in the study. The patients were divided into four groups according to the surgeon (92 patients in group A, 60 patients in group B, 38 patients in group C and 44 patients in group D)...
March 30, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29599074/radiographic-evaluation-of-the-normal-ankle-joint-in-children-and-adolescent
#15
Ki Hyuk Sung, Soon-Sun Kwon, Seung Jun Moon, Seung Yeol Lee
BACKGROUND: The purpose of this study was to determine the reliability of numerous radiographic measurements of the skeletally immature ankle joint, timing of ossification of medial malleolus and appearance of tibial incisura and differences in the values of radiographic measurements based on age and sex. METHODS: This study included 590 subjects (0-15 years), who underwent ankle AP, lateral and mortise radiographs. Presence of the medial malleolus and incisura fibularis were recorded...
March 26, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29573864/minimally-invasive-distal-linear-metatarsal-osteotomy-combined-with-selective-release-of-lateral-soft-tissue-for-severe-hallux-valgus
#16
Hiroyuki Seki, Yasunori Suda, Kenichiro Takeshima, Tetsuro Kokubo, Ken Ishii, Masaya Nakamura, Morio Matsumoto, Yasuo Niki
BACKGROUND: Minimally invasive techniques for hallux valgus have been widely used to treat mild to moderate hallux valgus deformities. The purpose of this study was to evaluate the clinical and radiographic outcomes of distal linear metatarsal osteotomy (DLMO), which is one of the minimally invasive techniques, for severe hallux valgus. METHODS: 95 patients (141 feet) with severe hallux valgus underwent DLMOs. Lateral soft tissue release (LSTR) was performed at the same time for the cases selected by an original manual test...
March 21, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29571958/transplantation-of-dedifferentiated-fat-cell-derived-micromass-pellets-contributed-to-cartilage-repair-in-the-rat-osteochondral-defect-model
#17
Manabu Shimizu, Taro Matsumoto, Shinsuke Kikuta, Munenori Ohtaki, Koichiro Kano, Hiroaki Taniguchi, Shu Saito, Masahiro Nagaoka, Yasuaki Tokuhashi
BACKGROUND: Mature adipocyte-derived dedifferentiated fat (DFAT) cells possesses the ability to proliferate effectively and the potential to differentiate into multiple linages of mesenchymal tissue; similar to adipose-derived stem cells (ASCs). The purpose of this study is to examine the effects of DFAT cell transplantation on cartilage repair in a rat model of osteochondral defects. METHODS: Full-thickness osteochondral defects were created in the knees of Sprague-Dawley rats bilaterally...
March 20, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29503038/nonunion-of-the-sternum-treated-with-cervical-locking-plate-a-case-report
#18
Natsumi Saka, Yoshinobu Watanabe, Gen Sasaki, Mitsuru Iida, Hirotaka Kawano
No abstract text is available yet for this article.
March 1, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29555390/aiming-for-a-breakthrough-in-the-treatment-of-advanced-sarcoma-and-bone-metastasis
#19
EDITORIAL
Mitsuru Takahashi
No abstract text is available yet for this article.
May 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29551357/modified-sauv%C3%A3-kapandji-procedure-for-the-distal-radioulnar-joint-disorders-of-osteoarthritis-and-rheumatoid-arthritis
#20
Akio Minami, Yukinobu Kamiya, Yasuaki Tojo, Satoko Matsumoto Harmon, Kota Suda
BACKGROUND: The Sauvé-Kapandji (SK) procedure is one of several surgical options in the treatment of distal radioulnar disorders by osteoarthritis (OA) and rheumatoid arthritis (RA). While satisfactory postoperative clinical results were obtained in most cases, instability of the proximal ulnar stump and radioulnar convergence are the most common complications. Minami et al. have developed a modification of the SK procedure that maintains the transverse diameter of the distal radioulnar joint and stabilizes the proximal ulnar stump, using a half-slip of the extensor carpi ulnaris tendon...
May 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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