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https://www.readbyqxmd.com/read/28300706/tapered-stems-one-third-proximally-coated-have-higher-complication-rates-than-cylindrical-two-third-coated-stems-in-patients-with-high-hip-dislocation-undergoing-total-hip-arthroplasty-with-step-cut-shortening-osteotomy
#1
Vahit Emre Ozden, Goksel Dikmen, Burak Beksac, Ismail Remzi Tozun
BACKGROUND: The results of cementless stems in total hip arthroplasty (THA) done because of congenital dislocation with step-cut osteotomy is not well known, particularly the influence of the design and the role of extent of porous coating. Therefore we performed a retrospective study to evaluate the mid to long-term results THA performed with a single type acetabular component and different geometry and fixation type stems with ceramic bearings in the setting of step-cut subtrochanteric osteotomy in high hip dislocated (HHD) patients...
March 11, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28153459/total-hip-arthroplasty-in-the-spinal-deformity-population-does-degree-of-sagittal-deformity-affect-rates-of-safe-zone-placement-instability-or-revision
#2
Edward M DelSole, Jonathan M Vigdorchik, Ran Schwarzkopf, Thomas J Errico, Aaron J Buckland
BACKGROUND: Changes in spinal alignment and pelvic tilt alter acetabular orientation in predictable ways, which may have implications on stability of total hip arthroplasty (THA). Patients with sagittal spinal deformity represent a subset of patients who may be at particularly high risk of THA instability because of postural compensation for abnormal spinal alignment. METHODS: Using standing stereoradiography, we evaluated the spinopelvic parameters, acetabular cup anteversion, and inclination of 139 THAs in 107 patients with sagittal spinal deformity...
December 27, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28137262/direct-anterior-approach-for-total-hip-arthroplasty-with-a-novel-mobile-traction-table-a-prospective-cohort-study
#3
Junichi Nakamura, Shigeo Hagiwara, Sumihisa Orita, Ryuichiro Akagi, Takane Suzuki, Masahiko Suzuki, Kazuhisa Takahashi, Seiji Ohtori
BACKGROUND: The purpose of this prospective cohort study was to clarify the safety and efficacy of total hip arthroplasty via the direct anterior approach in the supine position with a novel mobile traction table. METHODS: The first experience of consecutive surgeries by a single surgeon using the direct anterior approach with a traction table is described with a two-year follow-up period. Of 121 patients, 100 patients without previous hip surgeries, severe deformity, or cemented implants were divided into two groups comprising the first 50 patients and the second 50 patients...
January 31, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28116505/total-hip-arthroplasty-after-failed-treatment-of-proximal-femur-fracture
#4
Tomonori Tetsunaga, Kazuo Fujiwara, Hirosuke Endo, Tomoyuki Noda, Tomoko Tetsunaga, Toru Sato, Naofumi Shiota, Toshifumi Ozaki
INTRODUCTION: Total hip arthroplasty (THA) is a good option as a salvage procedure after failed treatment of proximal femur fracture. The anatomy of the proximal femur, however, makes this surgery complicated and challenging. The purpose of this study was to evaluate the radiographic and clinical outcomes of THA after failed treatment of proximal femur fractures. MATERIALS AND METHODS: We retrospectively analysed 50 consecutive THAs (42 women, 8 men; mean age 77 years) after failed treatment of a proximal femur fracture...
January 23, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28072898/three-year-results-with-a-ringless-third-generation-porous-plasma-sprayed-acetabular-component-in-primary-total-hip-arthroplasty
#5
Keith R Berend, Joanne B Adams, Michael J Morris, Adolph V Lombardi
INTRODUCTION: We previously reported promising early results in patients undergoing primary total hip arthroplasty (THA) with a third-generation cementless acetabular system that has a porous plasma-sprayed coating on a titanium alloy substrate shell, a ringless barb and groove locking mechanism, and a vitamin E-infused highly crosslinked polyethylene insert. The purpose of this study was to examine the outcomes and need for revision in a subset of patients previously reviewed who now have potential for three-year follow-up...
January 10, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28047548/we-h-brc-03-failure-mode-and-effects-analysis-in-the-first-clinical-implementation-of-a-novel-stereotactic-breast-radiotherapy-device-gammapod%C3%A2
#6
S Mossahebi, S Feigenberg, E Nichols, Y Niu, S Becker, K Prado, B Yi, C Yu, Y Mutaf
PURPOSE: GammaPod™, the first stereotactic radiotherapy device for early stage breast cancer treatment, has been recently installed and commissioned at our institution. A multidisciplinary working group applied the failure mode and effects analysis (FMEA) approach to perform a risk analysis. METHODS: FMEA was applied to the GammaPod™ treatment process by: 1) generating process maps for each stage of treatment; 2) identifying potential failure modes and outlining their causes and effects; 3) scoring the potential failure modes using the risk priority number (RPN) system based on the product of severity, frequency of occurrence, and detectability (ranging 1-10)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28002919/is-a-minimally-invasive-anterior-approach-effective-in-old-patients-a-pilot-study
#7
C Faldini, F Perna, F Pilla, N Stefanini, C Pungetti, V Persiani, F Traina
Minimally invasive approach to the hip is a blood preserving surgery, with rapid rehabilitation, and low dislocation rate. Intuitively, these characteristics render this approach extremely suitable in the elderly patient. The aim of this study was to analyze the early clinical and radiographic results in the first 30 consecutive patients above 70 years of age undergoing THR through a minimally invasive anterior approach. Clinical evaluations showed an improvement of the Harris Hip Score and WOMAC score after surgery...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27920583/intellijoint-hip-%C3%A2-a-3d-mini-optical-navigation-tool-for-improving-intraoperative-accuracy-during-total-hip-arthroplasty
#8
Wayne G Paprosky, Jeffrey M Muir
Total hip arthroplasty is an increasingly common procedure used to address degenerative changes in the hip joint due to osteoarthritis. Although generally associated with good results, among the challenges associated with hip arthroplasty are accurate measurement of biomechanical parameters such as leg length, offset, and cup position, discrepancies of which can lead to significant long-term consequences such as pain, instability, neurological deficits, dislocation, and revision surgery, as well as patient dissatisfaction and, increasingly, litigation...
2016: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/27858241/repeated-posterior-dislocation-of-total-hip-arthroplasty-after-spinal-corrective-long-fusion-with-pelvic-fixation
#9
Hiroki Furuhashi, Daisuke Togawa, Hiroshi Koyama, Hironobu Hoshino, Tatsuya Yasuda, Yukihiro Matsuyama
PURPOSE: Several reports have indicated that anterior dislocation of total hip arthroplasty (THA) can be caused by spinal degenerative changes with excessive pelvic retroversion. However, no reports have indicated that posterior dislocation can be caused by fixed pelvic anteversion after corrective spine surgery. We describe a rare case experiencing repeated posterior THA dislocation that occurred at 5 months after corrective spinal long fusion with pelvic fixation. METHODS: A 64-year-old woman had undergone bilateral THA at 13 years before presenting to our institution...
November 17, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27728947/novel-patient-specific-instruments-for-acetabular-preparation-and-cup-placement
#10
Ran Schwarzkopf, Erik Schnaser, Taiki Nozaki, Yasuhito Kaneko, Michael J Gillman
INTRODUCTION: Patient-specific implants and instruments (PSI) have been used in both knee and shoulder replacements due to the perceived benefits of improved surgical accuracy and efficiency. The proposed benefits of using a PSI in total hip arthroplasty (THA) are numerous and include reduction of operative time and improved mechanical and anatomical alignment leading to increased implant longevity, increased stability, and clinical outcomes. We describe a novel patient-specific instrumentation and a surgical method that may improve directed resection of acetabular bone and accurate cup placement during THA...
October 6, 2016: Surgical Technology International
https://www.readbyqxmd.com/read/27693053/does-pelvic-sagittal-inclination-in-the-supine-and-standing-positions-change-over-10-years-of-follow-up-after-total-hip-arthroplasty
#11
Satoru Tamura, Shunsaku Nishihara, Masaki Takao, Takashi Sakai, Hidenobu Miki, Nobuhiko Sugano
BACKGROUND: Functional anteversion and inclination of the cup change as the pelvic sagittal inclination (PSI) changes. The purposes of this study were to investigate the chronological changes of PSI during a 10-year follow-up period after total hip arthroplasty (THA) and to report the characteristics of patients who showed a greater than 10° change in the PSI from the supine to the standing position. METHODS: The subjects were 70 patients who were followed up for 10 years after THA...
September 9, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27640188/prospective-two-year-subsidence-analysis-of-100-cemented-polished-straight-stems-a-short-term-clinical-and-radiological-observation
#12
Wolf Siepen, Lukas Zwicky, Karl Kilian Stoffel, Thomas Ilchmann, Martin Clauss
BACKGROUND: Cemented stems show good long-term results and the survival of new implants can be predicted by their early subsidence. With EBRA-FCA (Femoral Component Analysis using Einzel-Bild-Röntgen-Analyse) early subsidence as an early indicator for later aseptic loosening can be analysed. For the cemented TwinSys stem mid- and long-term data is only avalible from the New Zeeland Arthroplasty register, thus close monitoring of this implant system is still mandatory. METHODS: We conducted a 2 year follow up of 100 consecutive hybrid THA (Total hip arthroplasty) of a series of 285 primary THA operated between Jan 2009 und Oct 2010...
2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27605697/surgeons-accuracy-in-achieving-their-desired-acetabular-component-orientation
#13
REVIEW
George Grammatopoulos, Abtin Alvand, A Paul Monk, Stephen Mellon, Hemant Pandit, Jonathan Rees, Harinderjit S Gill, David W Murray
BACKGROUND: Wide variability in cup orientation has been reported. The aims of this study were to determine how accurate surgeons are at orientating the acetabular component and whether factors such as visual cues and the side of operating table improved accuracy. METHODS: A pelvic model was positioned in neutral alignment on an operating table and was prepared as in a posterior approach. Twenty-one surgeons (9 trainers and 12 trainees) were tasked with positioning an acetabular component in a series of target orientations...
September 7, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27430322/determinants-of-public-malaria-awareness-during-the-national-malaria-elimination-programme-a-cross-sectional-study-in-rural-china
#14
Shangfeng Tang, Lu Ji, Tao Hu, Ghose Bishwajit, Da Feng, Hui Ming, Yue Xian, Qian Fu, Zhifei He, Hang Fu, Ruoxi Wang, Zhanchun Feng
BACKGROUND: Public malaria health promotion is an integral part of the national malaria elimination programme, which was launched by the Chinese government in 2010. However, the public awareness of malaria needs to improve. This study aims to explore the determinants of public awareness of malaria. METHODS: A cross-sectional survey was conducted using stratified sampling method from June 2015 to March 2016. Bivariate logistic regression was performed to explore the association between predictors and malaria awareness in the sample population...
2016: Malaria Journal
https://www.readbyqxmd.com/read/27394839/grammedessa-a-new-genus-of-edessinae-hemiptera-heteroptera-pentatomidae
#15
Andre Oliveira Correia, Jose Antonio Marin Fernandes
The new genus Grammedessa is here proposed for 12 species: Edessa pallicornis, E. bugabensis, E. rorativentris and E. stillativentris, and eight new species: Grammedessa brunneotarsata, G. polytreta, G. flavolimbata, G. paraensis, G. braziliana, G. hypsolineata, G. multicavata and G. matogrossensis. Species belonging to this genus share four black punctured longitudinal stripes on the dorsal surface of the head; humeral angles laterally projected and slightly flattened dorso-ventrally; metasternal process with branches of anterior bifurcation narrow, long, and with acute apices; abdominal trichobothria placed laterally, not aligned with spiracles; females with gonocoxites 8 and laterotergites 8 always punctured, gonocoxites 8 large, subequal in length to laterotergites 9; males with ventral rim of pygophore deeply excavated, superior process of genital cup partially fused to the wall...
May 4, 2016: Zootaxa
https://www.readbyqxmd.com/read/27322169/assessment-of-accuracy-and-reliability-in-acetabular-cup-placement-using-an-iphone-ipad-system
#16
Kenji Kurosaka, Shigeo Fukunishi, Tomokazu Fukui, Shoji Nishio, Yuki Fujihara, Shohei Okahisa, Yu Takeda, Takashi Daimon, Shinichi Yoshiya
Implant positioning is one of the critical factors that influences postoperative outcome of total hip arthroplasty (THA). Malpositioning of the implant may lead to an increased risk of postoperative complications such as prosthetic impingement, dislocation, restricted range of motion, polyethylene wear, and loosening. In 2012, the intraoperative use of smartphone technology in THA for improved accuracy of acetabular cup placement was reported. The purpose of this study was to examine the accuracy of an iPhone/iPad-guided technique in positioning the acetabular cup in THA compared with the reference values obtained from the image-free navigation system in a cadaveric experiment...
July 1, 2016: Orthopedics
https://www.readbyqxmd.com/read/27236745/even-the-intraoperative-knowledge-of-femoral-stem-anteversion-cannot-prevent-impingement-in-total-hip-arthroplasty
#17
Markus Weber, Michael L Woerner, Ernst Sendtner, Florian Völlner, Joachim Grifka, Tobias F Renkawitz
BACKGROUND: In this prospective study of 66 patients undergoing cementless total hip arthroplasty through a minimally invasive anterolateral approach, we evaluated the impact of an intraoperative hybrid combined anteversion technique on postoperative range of motion (ROM). METHODS: After navigation of femoral stem anteversion, trial acetabular components were positioned manually, and their position recorded with navigation. Then, final components were implanted with navigation at the goals prescribed by the femur-first impingement detection algorithm...
April 30, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27162730/late-clinical-characteristics-of-infants-with-retinopathy-of-prematurity-and-treated-with-cryotherapy
#18
Eren Cerman, Deniz Ozarslan Ozcan, Hande Celiker, Muhsin Eraslan, Ozlem Sahin, Haluk Kazokoglu
AIM: To describe the clinical characteristics and late results of patients with retinopathy of prematurity (ROP) treated with "6h cryotherapy". METHODS: Out of 1252 infants screened for ROP, 52 patients were treated with temporal 6h cryotherapy from 1997 to 2005 were recalled to our clinic. Among these 23 patients were available and 46 eyes of 23 infants were included to evaluate for visual acuity, refractive error, ocular alignment, nystagmus, retinal examination (abnormal branching of retinal vessels, retinal thinning, latis degenerations, tortuosity of vessels, straightening of temporal vessels, narrowing of the angle of vessel in the juxtapapillary entrance, pigment changes, macular heterotopia), optic atrophy and optic disc cupping, axial length at birth and axial length at 1y...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27122507/a-kirschner-wire-as-a-transverse-axis-guide-to-improve-acetabular-cup-positioning
#19
Y Ishidou, M Hirotsu, T Setoguchi, S Nagano, H Kakoi, M Yokouchi, T Yamamoto, S Komiya
PURPOSE: To compare cup-positioning accuracy in total hip arthroplasty (THA) with or without use of a Kirschner wire as a transverse-axis guide for pelvic alignment. METHODS: Records of 18 men and 73 women (mean age, 60 years) who underwent primary THA with (n=49) or without (n=42) use of a Kirschner wire as a transverse-axis guide for pelvic alignment were reviewed. A 2.4-mm Kirschner wire as a transversea-xis guide was inserted to the anterior superior iliac spine and was parallel to a line linking the left and right anterior superior iliac spine...
April 2016: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/27106260/anterior-total-hip-arthroplasty-using-a-metaphyseal-bone-sparing-stem-component-alignment-and-early-complications
#20
Mohammed M Ahmed, Thomas J Otto, Berton R Moed
BACKGROUND: Limited-incision total hip arthroplasty (THA) preserves hip abductors, posterior capsule, and external rotators potentially diminishing dislocation risk. However, potential complications also exist, such as component malposition. Specific implants have been manufactured that enhance compatibility with this technique, while preserving metaphyseal bone; however, little data exists documenting early complications and component position. The purpose was to evaluate primary THA using a curved, bone-sparing stem inserted through the anterior approach with respect to component alignment and early complications...
April 22, 2016: Journal of Orthopaedic Surgery and Research
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