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https://www.readbyqxmd.com/read/28431409/outcomes-of-hemiarthroplasty-and-total-hip-arthroplasty-for-femoral-neck-fracture-a-medicare-cohort-study
#1
Zhong Wang, Timothy Bhattacharyya
OBJECTIVES: For patients with femoral neck fractures, total hip arthroplasty (THA) demonstrates superior outcomes compared with hemiarthroplasty. However, hemiarthroplasty remains a common treatment for femoral neck fractures and the conversion rates are unknown. We compared the results of the 2 procedures using a Medicare database. METHODS: We assembled a cohort of 70,242 patients 65 to 90 years of age with an ICD9 diagnosis and matching Current Procedure Terminology code for femoral neck fracture between 2008 and 2012...
May 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28430583/non-invasive-prediction-of-the-tumor-growth-rate-using-advanced-diffusion-models-in-head-and-neck-squamous-cell-carcinoma-patients
#2
Noriyuki Fujima, Tomohiro Sakashita, Akihiro Homma, Taisuke Harada, Yukie Shimizu, Khin Khin Tha, Kohsuke Kudo, Hiroki Shirato
We assessed parameters of advanced diffusion weighted imaging (DWI) models for the prediction of the tumor growth rate in 55 head and neck squamous cell carcinoma (HNSCC) patients. The DWI acquisition used single-shot spin-echo echo-planar imaging with 12 b-values (0-2000). We calculated 14 DWI parameters using mono-exponential, bi-exponential, tri-exponential, stretched exponential and diffusion kurtosis imaging models. We directly measured the tumor growth rate from two sets of different-date imaging data...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426262/feasibility-of-outpatient-total-hip-and-knee-arthroplasty-in-unselected-patients
#3
Kirill Gromov, Per Kjærsgaard-Andersen, Peter Revald, Henrik Kehlet, Henrik Husted
Background and purpose - The number of patients who are suitable for outpatient total hip and knee arthroplasty (THA and TKA) in an unselected patient population remains unknown. The purpose of this prospective 2-center study was to identify the number of patients suitable for outpatient THA and TKA in an unselected patient population, to investigate the proportion of patients who were discharged on the day of surgery (DOS), and to identify reasons for not being discharged on the DOS. Patients and methods - All consecutive, unselected patients who were referred to 2 participating centers and who were scheduled for primary THA and TKA were screened for eligibility for outpatient surgery with discharge to home on DOS...
April 20, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28425716/reactions-of-n2o5-with-salty-and-surfactant-coated-glycerol-interfacial-conversion-of-br-to-br2-mediated-by-alkylammonium-cations
#4
Michael A Shaloski, Joseph R Gord, Sean Staudt, Sarah L Quinn, Timothy H Bertram, Gilbert Maker Nathanson
Gas-liquid scattering and product-yield experiments are used to investigate reactions of N2O5 with glycerol containing Br(-) and surfactant ions. N2O5 oxidizes Br(-) to Br2 for every solution tested: 2.7 M NaBr, 0.03 M tetrahexylammonium bromide (THABr), 0.03 M THABr + 0.5 M NaBr, 0.03 M THABr + 0.5 M NaCl, 0.03 M THABr + 0.01 M sodium dodecyl sulfate (SDS), and 0.01 M cetyltrimethylammonium bromide (CTABr). N2O5 also reacts with glycerol itself to produce mono- and dinitroglycerin. Surface tension measurements indicate that 0...
April 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28424914/association-of-femoral-head-and-acetabular-fractures-on-computerized-tomography-correlation-with-the-judet-letournel-classification
#5
Nicholas M Beckmann, Naga R Chinapuvvula, Chunyan Cai
PURPOSE: Tha aims of this study were to identify the incidence of femoral head fractures in the setting of acetabular fractures and to determine the relationship between acetabular fracture pattern, the degree of acetabular fracture displacement, and the incidence of femoral head fractures. MATERIALS AND METHODS: This is a retrospective cross-sectional study of 274 patients with 300 acetabular fractures diagnosed on pelvic CT. Acetabular fractures were categorized using the Judet-Letournel classification system...
April 19, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28422866/the-use-of-anticoagulants-for-prevention-and-treatment-of-osteonecrosis-of-the-femoral-head-a-systematic-review
#6
Peipei Guo, Fuqiang Gao, Yanhua Wang, Zhenkun Zhang, Wei Sun, Baoguo Jiang, Bailiang Wang, Zirong Li
BACKGROUND: Osteonecrosis of the femoral head (ONFH) is a progressive disease, which mainly affects young adults and often necessitates total hip arthroplasty (THA), so early interventions are critical to successfully protect hip joint from THA. In this review, our purpose was to determine the effects of anticoagulants for preventing and treating the primary and secondary ONFH, respectively, before the collapse stage or before the pathology of necrosis. METHODS: We searched PubMed, Embase, Web of Science databases for relevant studies...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28420981/age-related-difference-in-functional-brain-connectivity-of-mastication
#7
Chia-Shu Lin, Ching-Yi Wu, Shih-Yun Wu, Hsiao-Han Lin, Dong-Hui Cheng, Wen-Liang Lo
The age-related decline in motor function is associated with changes in intrinsic brain signatures. Here, we investigated the functional connectivity (FC) associated with masticatory performance, a clinical index evaluating general masticatory function. Twenty-six older adults (OA) and 26 younger (YA) healthy adults were recruited and assessed using the masticatory performance index (MPI) and resting-state functional magnetic resonance imaging (rs-fMRI). We analyzed the rs-fMRI FC network related to mastication, which was constructed based on 12 bilateral mastication-related brain regions according to the literature...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28419886/total-hip-arthroplasty-for-patients-with-crowe-type-iv-developmental-dysplasia-of-the-hip-ten-years-results
#8
Wei-Nan Zeng, Jun-Li Liu, Fu-You Wang, Xin Zhang, Hua-Quan Fan, Guang-Xing Chen, Lin Guo, Xiao-Jun Duan, Qiang Zhou, Liu Yang
BACKGROUND AND OBJECTIVES: The aim of this study was to determine the rate of union, functional results and complications in patients with Crowe IV developmental dysplasia of the hip (DDH) who underwent cementless total hip arthroplasty (THA) with S-ROM prostheses and subtrochanteric transverse shortening osteotomy. METHODS: Forty-five patients (52 hips) operated between January 2005 and May 2008, with a mean age of 40.6 years at surgery were followed. The mean follow-up period was 9...
April 15, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28418577/prospective-assessment-of-sleep-quality-before-and-after-primary-total-joint-replacement
#9
Blaine T Manning, Sean M Kearns, Daniel D Bohl, Tori Edmiston, Scott M Sporer, Brett R Levine
Sleep disruption is a common, yet rarely addressed, complaint among patients who have undergone total joint arthroplasty (TJA). This study assessed sleep quality before and after primary TJA. A total of 105 patients who underwent primary total hip arthroplasty (THA) or total knee arthroplasty (TKA) prospectively completed questionnaires during the preoperative, early postoperative, and late postoperative periods. The survey included the Epworth Sleepiness Scale, current sleeping habits, and patient perspectives of sleep quality and duration...
April 18, 2017: Orthopedics
https://www.readbyqxmd.com/read/28416828/-application-of-bilateral-direct-anterior-approach-total-hip-arthroplasty-a-report-of-22-cases
#10
J Tang, M Lv, Y X Zhou, J Zhang
OBJECTIVE: To analyze the operation technique and the methods to avoid early complications on the learning curve for bilateral direct anterior approach (DAA) total hip arthroplasty (THA). METHODS: We retrospectively studied a series of continued cases with bilateral avascular necrosis of the femoral head (AVN) or degenerative dysplastic hip and rheumatoid arthritis that were treated by DAA THA in Beijing Jishuitan Hospital. A total of 22 patients with 44 hips were analyzed from June 2014 to August 2016 in this study...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416824/-gait-analysis-at-the-early-stage-after-direct-anterior-approach-in-total-hip-arthroplasty
#11
H Y Wang, P D Kang, Y Nie, H Y Zhao, Z Y Yang, F X Pei
OBJECTIVE: To evaluate the result of operation and gait analysis at the early stage after direct anterior approach (DAA) in total hip arthroplasty (THA). METHODS: In this study, 20 patients who suffered from necrosis of femoral head or developmental dysplasia of the hip were scheduled to undergo THA. The basic information and visual analogue scale (VAS) score, Harris score before and after surgery were recorded. All of the patients finished the gait analysis before the surgery and 6 weeks and 12 weeks after the surgery, the data were compared with those of normal adult people...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28412054/community-pharmacy-transition-of-care-services-and-rural-hospital-readmissions-a-case-study
#12
Allison P Patton, Yifei Liu, D Matthew Hartwig, Justin R May, Jessica Moon, Steven C Stoner, Kendall D Guthrie
OBJECTIVES: To explore community pharmacist involvement in the transition of care (TOC) process for patients discharged with acute myocardial infarction (AMI), heart failure (HF), pneumonia, chronic obstructive pulmonary disease (COPD), or elective total hip or knee arthroplasty (THA/TKA). SETTING: Patients discharged from a 60-bed acute care hospital located in rural Missouri were seen by a community pharmacist in 2 independent community pharmacy chain locations...
April 12, 2017: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/28406297/binding-analysis-of-some-classical-acetylcholinesterase-inhibitors-insights-for-a-rational-design-using-free-energy-perturbation-method-calculations-with-qm-mm-md-simulations
#13
Érica C M Nascimento, Mónica Oliva, Katarzyna Świderek, João B L Martins, Juan Andrés
In the present study, the binding free energy of some classical inhibitors (DMT, DNP, GNT, HUP, THA) with acetylcholinesterase (AChE) is calculated by means of the free energy perturbation (FEP) method based on hybrid quantum mechanics and molecular mechanics (QM/MM) potentials. The results highlight the key role of the van der Waals interaction for the inhibition process, since the contribution of this term to the binding free energy is almost as decisive as the electrostatic one. The analysis of the geometrical parameters and the interaction energy per residue along the QM/MM molecular dynamics (MD) simulations highlights the most relevant interactions in the different AChE-ligand systems, showing that the charged residues with a more prominent contribution to the interaction energy are Asp72 and Glu199, although the relative importance depends on the molecular size of the ligand...
April 13, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28400661/intraoperative-measurement-of-limb-lengthening-during-total-hip-arthroplasty
#14
Dimitrios Vasileiou Papadopoulos, Panagiotis Koulouvaris, Georgios Charalambos Aggelidakis, Andreas Georgios Tsantes, Marios Georgios Lykissas, Alexandros Mavrodontidis
BACKGROUND: Limb length discrepancy (LLD) after total hip arthroplasty (THA) is a common problem which cannot be completely resolved. Many techniques have been described in order to minimize postoperative LLD, but most of these techniques are difficult to apply. Ideal technique must be simple and accurate. The most simple technique using a suture tied on the skin has well-known limitations, but its accuracy has not been evaluated before. MATERIALS AND METHODS: Sixty THAs in sixty patients (mean age 71 years, 1:1 male to female ratio) with hip osteoarthritis (37 cases in the right, and 23 cases in the left side) were studied in this prospective study...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28399325/influence-of-surgical-approach-on-pelvic-lift-in-hip-arthroplasty-during-cup-insertion
#15
Steffen Brodt, Christoph Windisch, Linda Krakow, Dimitri Nowack, Georg Matziolis
The position of the acetabular cup is a major factor in the long-term outcome of total hip arthroplasty (THA). Malpositioning of the acetabular cup frequently has been reported with the use of a minimally invasive implantation technique. It remains unclear whether the limited visibility or the increased retractor traction and thus tilting of the pelvis during cup implantation is the cause. This study investigated the influence of iatrogenically related pelvic lift using an anterolateral minimally invasive THA technique...
April 11, 2017: Orthopedics
https://www.readbyqxmd.com/read/28397753/hip-arthropathy-in-haemophilia
#16
Christian Carulli, Anna Rosa Rizzo, Massimo Innocenti
Hip arthropathy in haemophilic patients is disabling for hip and other common target joints. Even if bleedings in the hip are not frequent, femoroacetabular alterations may affect the functional ability of patients at a very young age. A haematologic prophylaxis combined with an adequate lifestyle and regular and low-traumatic physical activity are the keys to preventing such arthropathy. In the early stages of arthropathy, anti-inflammatory drugs and physical therapy may be sufficient to limit its progression...
April 8, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28395391/dual-mobility-acetabular-cups-in-primary-total-hip-arthroplasty-in-patients-at-high-risk-for-dislocation
#17
Steven F Harwin, Jaydev B Mistry, Morad Chughtai, Anton Khlopas, Chukwuweike Gwam, Jared M Newman, Carlos A Higuera, Peter M Bonutti, Arthur L Malkani, Frank R Kolisek, Ronald E Delanois, Michael A Mont
INTRODUCTION: Postoperative dislocation occurs in approximately 2% of primary total hip arthroplasties (THAs). Risk factors associated with dislocation include: age of 70 years or older, body mass index (BMI) of 30 kg/m2 or greater, alcohol abuse, and neuro-degenerative diseases such as multiple sclerosis or Parkinson's disease. As a result, dual-mobility articulations, which have been typically used for revision procedures, have become an increasingly popular option for these "at risk" primary THAs...
April 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28395388/results-of-a-modular-femoral-revision-system-before-and-after-taper-roller-hardening-in-total-hip-arthroplasty
#18
Dean J Marshall, Keith R Berend, Michael J Morris, Joanne B Adams, Adolph V Lombardi
INTRODUCTION: Modular component options can aid in addressing complex femoral reconstructions in total hip arthroplasty (THA) by allowing for customization of version control and proximal to distal sizing. However, component breakage at the modular junction has occurred, particularly in the presence of poor bone stock. A taper roller hardening (RH) process was developed to strengthen the modular junction to reduce breakage. The purpose of this study is to review THA patients before and after taper roller hardening to compare stem survival and frequency of breakage...
April 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28394018/protocol-for-follow-up-of-hip-arthroplasty-in-the-long-term-effect-on-revision-whistler-study
#19
Lindsay K Smith, Erik Lenguerrand, Ashley Blom, Jane Powell, Shea Palmer
Total hip arthroplasty (THA) is highly successful for reducing pain and improving function, providing health-related quality of life benefit. Demand for THA is increasing with associated increase in revision hip surgery. Hip arthroplasty surveillance (long-term follow up) can identify asymptomatically failing THA to prepare for revision surgery, reducing potential for complications or complexity of surgery. However, it is unknown whether the surveillance of THA can be shown to improve the patient outcomes or reduce costs around revision surgery...
April 10, 2017: Musculoskeletal Care
https://www.readbyqxmd.com/read/28392135/ten-year-cross-sectional-study-of-mechanically-assisted-crevice-corrosion-in-1352-consecutive-patients-with-metal-on-polyethylene-total-hip-arthroplasty
#20
Daniel K Hussey, Brian J McGrory
BACKGROUND: Mechanically assisted crevice corrosion (MACC) in metal-on-polyethylene total hip arthroplasty (THA) is of concern, but its prevalence, etiology, and natural history are incompletely understood. METHODS: From January 2003 to December 2012, 1352 consecutive THA surgeries using a titanium stem, cobalt-chromium alloy femoral head, and highly cross-linked polyethylene liner from a single manufacturer were performed. Patients were followed at 1-year and 5-year intervals for surveillance, but also seen earlier if they had symptoms...
March 18, 2017: Journal of Arthroplasty
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