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

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https://www.readbyqxmd.com/read/30001918/arthroscopic-resection-arthroplasty-for-septic-hip-with-osteonecrosis-of-the-femoral-head-in-patients-with-multiple-comorbidities-a-report-of-two-cases
#1
Jung-Taek Kim, Hyun Young Kim, Chul-Ho Kim, Jae In Park, Kekatpure Aditya, Ho Yeon Kim, Pil Whan Yoon
No abstract text is available yet for this article.
July 10, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29983215/analysis-of-detailed-clinical-characteristics-of-spinal-subdural-hematoma-following-lumbar-decompression-surgery
#2
Masanori Izeki, Koutatsu Nagai, Masato Ota, Yasutaka Matsuda, Shuichi Matsuda
BACKGROUND: Only a few reports have described symptomatic patients with postoperative spinal subdural hematoma (SSH) for which further surgery may have been required. No report has focused on the detailed clinical characteristics of postoperative SSH, including asymptomatic cases, in a case series. The reasons for this may be that SSH is an implicitly recognized rare entity, and there is no established consensus regarding the significance of performing postoperative magnetic resonance imaging (MRI) for all cases and the time at which to perform it...
July 5, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29983214/magnetic-resonance-imaging-analysis-of-the-extensor-carpi-ulnaris-tendon-and-distal-radioulnar-joint-in-triangular-fibrocartilage-complex-tears
#3
Shigeru Santo, Shohei Omokawa, Akio Iida, Takamasa Shimizu, Hideo Hasegawa, Yasuhito Tanaka
BACKGROUND: We compared the incidence of extensor carpi ulnaris (ECU) tendon and distal radioulnar joint (DRUJ) abnormalities using magnetic resonance imaging (MRI) between patients with triangular fibrocartilage complex (TFCC) tears and subjects without ulnar wrist pain. Additionally, we aimed to identify potential predictors of these MRI lesions. METHODS: The TFCC group comprised 70 consecutive patients with TFCC tears. The control group comprised 70 age- and sex-matched subjects without ulnar wrist pain...
July 5, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29960823/proximal-junctional-kyphosis-following-correction-surgery-in-the-lenke-5-adolescent-idiopathic-scoliosis-patient
#4
Jian Zhao, Mingyuan Yang, Yiling Yang, Ziqiang Chen, Ming Li
BACKGROUND: To investigate the risk factors of proximal junctional kyphosis (PJK) in Lenke 5 AIS patients after all-pedicle instrumentation and correction, and to compare the difference of radiographic and clinical outcome between PJK and Non-PJK populations. METHOD: Medical records of Lenke 5 AIS patients were reviewed from January 2008 to January 2013, included posteroanterior and lateral full spine X-ray films preoperatively, postoperatively (4-7 days after surgery), and at final follow-up...
June 27, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29958726/scapular-muscles-strengthening-on-pain-functional-outcome-and-muscle-activity-in-chronic-lateral-epicondylalgia
#5
Kritika Sethi, Majumi M Noohu
AIM: The aim of the study was to investigate the effect of lower trapezius (LT), middle trapezius (MT) and serratus anterior (SA) strengthening on pain, pain free grip strength, functional outcome, scapular muscles strength, scapular position and electromyographic (EMG) activity of lower trapezius, serratus anterior, extensor carpi radialis brevis (ECRB) and extensor digitorum communis (EDC) in individuals with chronic lateral epicondylalgia (LE). METHODS: Twenty six patients with chronic lateral epicondylalgia were recruited...
June 26, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29937132/accuracy-of-powered-surgical-instruments-compared-with-manual-instruments-for-pedicle-screw-insertion-evaluation-using-o-arm-based-navigation-in-scoliosis-surgery
#6
Toshiaki Kotani, Tsutomu Akazawa, Tsuyoshi Sakuma, Keita Nakayama, Shunji Kishida, Yuta Muramatsu, Yu Sasaki, Keisuke Ueno, Yasushi Iijima, Shohei Minami, Seiji Ohtori
BACKGROUND: Though powered surgical instruments for pedicle screw insertion combined with navigation have been developed to reduce time taken for spine surgery, clinical evidence demonstrating the safety and effectiveness of powered surgical instruments is limited. The goals of the present study were to compare the accuracy of powered instruments and manual instruments using O-arm-based navigation in surgery for scoliosis. METHODS: We retrospectively identified 60 consecutive patients with adolescent idiopathic scoliosis who underwent posterior corrective surgery using O-arm based navigation, collected from Jun 2013 to Feb 2015...
June 21, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29937131/intercondylar-and-central-regions-of-complete-discoid-lateral-meniscus-have-different-cell-and-matrix-organizations
#7
Takayuki Furumatsu, Ami Maehara, Yuki Okazaki, Toshifumi Ozaki
BACKGROUND: A complete discoid lateral meniscus (DLM) has a high risk of horizontal tear. However, cellular phenotypes and extracellular matrix organizations in complete DLMs are still unclear. The aim of this study was to investigate histological and cellular biological characteristics in both the intercondylar and central regions of complete DLM. MATERIALS AND METHODS: Meniscal samples were obtained from the intercondylar and central regions of complete DLM (n = 6)...
June 21, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29935973/esophageal-incarceration-associated-with-cervical-vertebral-fracture-in-a-patient-with-diffuse-idiopathic-skeletal-hyperostosis
#8
Yasushi Mizutani, Akinori Okuda, Naoki Maegawa, Yusuke Tada, Keisuke Takano, Hideki Asai, Tomoo Watanabe, Yasuyuki Kawai, Hideki Shigematsu, Yasuyuki Urisono, Hidetada Fukushima, Kazuo Okuchi, Yasuhito Tanaka
No abstract text is available yet for this article.
June 21, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29935972/direct-anterior-versus-anterolateral-approach-in-one-stage-supine-total-hip-arthroplasty-focused-on-nerve-injury-a-prospective-randomized-controlled-trial
#9
Ryohei Takada, Tetsuya Jinno, Kazumasa Miyatake, Masanobu Hirao, Akimasa Kimura, Daisuke Koga, Kazuyoshi Yagishita, Atsushi Okawa
BACKGROUND: The difference in clinical results between the direct anterior approach (DAA) and the anterolateral approach (ALA) for total hip arthroplasty (THA) is still unclear. The purpose of this study was to compare clinical results, including nerve injuries, between DAA and ALA in one-stage bilateral THA in a prospective, randomized controlled trial. METHODS: Thirty patients were recruited for primary bilateral THAs from 2014 to 2016. The left and right hips of each patient were randomly assigned to DAA and the others to ALA...
June 20, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29933942/evaluation-of-pelvic-morphology-in-female-patients-with-developmental-dysplasia-of-the-hip-using-three-dimensional-computed-tomography-a-cross-sectional-study
#10
Norio Imai, Dai Miyasaka, Kazuki Tsuchiya, Hayato Suzuki, Tomoyuki Ito, Izumi Minato, Naoto Endo
BACKGROUND: The purpose of this study is to measure pelvic morphology with respect to the pelvic incidence, pelvic tilt, and sacral slope using 3-dimensional measurement and to compare the pelvic morphology between the normal population and women with developmental dysplasia of the hip (center-edge angle, <25°). We hypothesized that the relationship between pelvic incidence, anatomical pelvic tilt, and anatomical sacral slope would be different between normal subjects and patients with developmental dysplasia of the hip...
June 19, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29933941/influence-of-subjective-economic-hardship-on-new-onset-of-neck-pain-so-called-katakori-in-the-chronic-phase-of-the-great-east-japan-earthquake-a-prospective-cohort-study
#11
Takuya Sekiguchi, Yoshihiro Hagiwara, Yumi Sugawara, Yasutake Tomata, Fumiya Tanji, Takashi Watanabe, Yutaka Yabe, Masashi Koide, Nobuyuki Itaya, Eiji Itoi, Ichiro Tsuji
BACKGROUND: Studies have suggested that musculoskeletal symptoms increase after natural disasters. The Great East Japan Earthquake (GEJE) and accompanying tsunami placed a huge financial burden on the local population. This study determined whether subjective economic hardship influenced the new onset of neck pain (katakori) in the chronic phase after the GEJE. METHODS: This study used longitudinal data from 1359 adults who had responded to the self-report questionnaire at 2 and 3 years after the GEJE...
June 19, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29929917/effect-of-tibial-component-position-on-short-term-clinical-outcome-in-oxford-mobile-bearing-unicompartmental-knee-arthroplasty
#12
Tomoyuki Kamenaga, Takafumi Hiranaka, Yuichi Hida, Takaaki Fujishiro, Koji Okamoto
BACKGROUND: Malposition of the tibial components is a well-known complication of unicompartmental knee arthroplasty. In this study, we aimed to ascertain the relationship between the tibial component position and clinical outcomes of unicompartmental knee arthroplasty. We focused on the tibial component height and obliquity in the coronal plane. METHODS: Patients with anteromedial osteoarthritis who underwent Oxford mobile-bearing unicompartmental knee arthroplasty (n = 45) were included, and their Oxford knee score was assessed prior to and 1 and 2 years following surgery...
June 18, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29910098/a-meta-analysis-evaluates-the-efficacy-of-intravenous-acetaminophen-for-pain-management-in-knee-or-hip-arthroplasty
#13
Hongzhang Guo, Changde Wang, Yufang He
BACKGROUND: The objective of this study was to assess whether intravenous acetaminophen for patients undergoing knee or hip arthroplasty could reduce the opioid consumption and improve pain management. METHOD: Eligible studies were searched from electronic databases including PubMed, Web of Science, Embase (Ovid interface) and Cochrane Library (Ovid interface). The quality assessments were performed according to the Cochrane systematic review method. The assessed outcomes were including opioid consumption, pain scores, length of hospital stays and total occurrence of adverse events...
June 14, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29909125/effectiveness-of-using-low-rate-fluoroscopy-to-reduce-an-examiner-s-radiation-dose-during-lumbar-nerve-root-block
#14
Kentaro Yamane, Nobuo Kai, Tetsuro Mazaki, Tadashi Miyamoto, Tomohiro Matsushita
BACKGROUND: Long-term exposure to radiation can lead to gene mutations and increase the risk of cancer. Low rate fluoroscopy has the potential to reduce the radiation exposure for both the examiner and the patient during various fluoroscopic procedures. The purpose of this study was to evaluate the impact of low rate fluoroscopy on reducing an examiner's radiation dose during nerve root block. METHODS: A total of 101 lumbar nerve root block examinations were performed at our institute during a 6-month period...
June 13, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29880227/histological-analysis-and-biomechanical-evaluation-of-fatty-infiltration-after-rotator-cuff-tear-and-suprascapular-nerve-injury-in-a-rat-model
#15
Yu Sasaki, Nobuyasu Ochiai, Arata Nakajima, Takahisa Sasho, Tomonori Kenmoku, Takeshi Yamaguchi, Takehiro Kijima, Eiko Hashimoto, Yasuhito Sasaki, Seiji Ohtori
BACKGROUND: Rotator cuff tears are the most common shoulder injury, and little is known about the underlying etiology of fatty infiltration after rotator cuff tear. Previous studies speculated that rotator cuff tears lead to neural injury due to tethering of the suprascapular nerve at the notch. This study aimed to evaluate fatty infiltration after suprascapular nerve injury and rotator cuff tears. METHODS: Ninety adult male Sprague-Dawley rats were used and were divided into four groups: sham, tendon transection only, suprascapular nerve ligation, and tendon transection plus suprascapular nerve ligation...
June 5, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29866525/hounsfield-unit-of-screw-trajectory-as-a-predictor-of-pedicle-screw-loosening-after-single-level-lumber-interbody-fusion
#16
Yusuke Sakai, Shota Takenaka, Yohei Matsuo, Hiroyasu Fujiwara, Hirotsugu Honda, Takahiro Makino, Takashi Kaito
OBJECT: This study aims to clarify the clinical potential of Hounsfield unit (HU), measured on computed tomography (CT) images, as a predictor of pedicle screw (PS) loosening, compared to bone mineral density (BMD). METHODS: A total of 206 screws in 52 patients (21 men and 31 women; mean age 68.2 years) were analyzed retrospectively. The screws were classified into two groups depending on their screw loosening status on 3-month follow-up CT (loosening screw group vs...
June 1, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29866524/biomechanical-analysis-of-supra-acetabular-insufficiency-fracture-using-finite-element-analysis
#17
Hidetatsu Tanaka, Go Yamako, Hiroaki Kurishima, Shutaro Yamashita, Yu Mori, Daisuke Chiba, Etsuo Chosa, Eiji Itoi
BACKGROUND: Supra-acetabular insufficiency fractures (SAIFs) occur in the upper acetabulum and are rare compared with insufficiency sacral, femoral head, or ischial fractures. However, SAIFs are known to occur in low grade trauma, and the underlying mechanism is still remained unclear. METHODS: We performed biomechanical analysis using finite element analysis to clarify the mechanisms underlying the development of SAIFs. Patient-specific models and bone mineral density (BMD) were derived from pelvic computed tomography data from two patients with SAIF (unaffected side) and two healthy young adults...
June 1, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29853316/patients-with-a-dorr-type-c-femoral-bone-require-attention-for-using-a-summit-cementless-stem-results-of-total-hip-arthroplasty-after-a-minimum-follow-up-period-of-5-years-after-insertion-of-a-summit-cementless-stem
#18
Masanori Tsubosaka, Shinya Hayashi, Shingo Hashimoto, Koji Takayama, Ryosuke Kuroda, Tomoyuki Matsumoto
BACKGROUND: The Summit cementless stem has been used as a device to occupy the proximal medullary canal space in total hip arthroplasty (THA). The purpose of this study was to evaluate the mid-term clinical and radiographic results of the Summit stem and the differences in the results as a function of medullary cavity shape. METHODS: This study analyzed the 90 consecutive patients who underwent THA by using the Summit cementless stem. The minimum clinical and radiographic follow-up period for the patients was 5 years (mean, 5...
May 28, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29729950/an-algorithmic-strategy-of-surgical-intervention-for-cervical-degenerative-kyphosis
#19
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
#20
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
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