bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk Factors for Conversion Surgery to Total Hip Arthroplasty of a Hemiarthroplasty Performed for a Femoral Neck Fracture
Authors: Grosso Matthew J. , Danoff Jonathan R. , Thacher Ryan , Murtaugh Taylor S. , Hickernell Thomas R. , Shah Roshan P. , Macaulay William 
Published: October 2017

Introduction The purpose of this study was to determine risk factors for conversion to total hip arthroplasty (THA) in patients originally treated with hemiarthroplasty (HA) for displaced femoral neck fractures. Methods In this case-controlled study, we identified 54 patients who were treated with HA for femoral neck fracture (FNF) who subsequently underwent conversion to THA at our institution between 2003 and 2013. We randomly selected 142 control patients who underwent HA for a displaced FNF without conversion surgery during the same time period. We compared demographic data, implant parameters, and radiographic data between the groups to identify risk factors for conversion surgery. Results In the univariate analysis, younger age at index surgery (mean 75 vs. 80 years, p = 0.006), higher body mass index (26.1 vs. 23.7, p = 0.031), bipolar prosthesis (20% vs. 36%, p = 0.024), absence of dementia (6% vs. 23%, p = 0.01), increased leg length compared to contralateral limb (6.5 mm vs. 0.2 mm, p<0.001), and increased HA femoral head size compared to the contralateral femoral head (2.7 mm vs. 1.5 mm, p = 0.02) were associated with a significantly increased risk of conversion surgery. In the multivariate logistic regression, decreased age at index surgery, no dementia, use of a bipolar head, and increased leg length discrepancy (LLD) were associated with risk of conversion. Conclusions Patient characteristics, including younger age, increased BMI, and absence of dementia can lead to increased risk for conversion of HA to THA. Intraoperative considerations of head size and increase in ipsilateral LLD may increase the risk of conversion surgery. These factors should be considered by surgeons who employ HA for displaced FNFs.
Comparison of Arthroscopic versus Open Surgery on External Snapping Hip Caused by Gluteal Muscle Contracture
Authors: Dai Zhu , Chen Zhiwei , Liao Ying , Tang Zhengwu , Cui Juncheng 
Published: October 2017

Purpose To compare the outcomes of contracture release by arthroscopic versus open surgical approach in patients with external snapping hip (ESH) caused by gluteal muscle contracture (GMC). Methods Medical records of patients with ESH due to GMC who underwent open surgery (n = 44) or arthroscopic surgery (n = 48) between October 2008 and October 2014 were reviewed. Patients were followed up at 1, 3, 12, and 24 months postoperatively. Operation time, incision length, postoperative pain, postoperative complication rate, and recurrence rate were compared between the 2 groups. Hip adduction, and Harris Hip Scores (HHS) at 1 and 2 years postoperatively were compared between the groups and with preoperative data. Results Mean operation time did not differ between the 2 groups (p>0.05). The arthroscopic surgery group had smaller incisions (p<0.05), less postoperative pain (p<0.05), lower complication rates (p<0.05) than did the open surgery group. The recurrence rates were similar for the 2 groups (p>0.05). Hip adduction, and HHS 1 year and 2 years postoperatively were significantly better postoperatively than they had been preoperatively for both groups (all p<0.01), and were similar for the 2 groups (all p>0.05). Conclusions Arthroscopic release of contracture tissue is a safe and effective approach for the treatment of ESH caused by GMC, with the advantages of small scars, less postoperative pain, fewer complications compared with open surgery.
Large fresh osteochondral allografts for the hip: growing the evidence
Authors: Oladeji Lasun O , Cook James L , Stannard James P , Crist Brett D 
Published: October 2017

Introduction: Articular cartilage lesions of the hip are difficult to effectively treat. Osteochondral allograft (OCA) transplantation in the knee has been associated with long-term success, but OCA for the hip has not been extensively studied. Here, we present the clinical and radiological outcomes from a cohort of 10 patients treated with fresh OCA transplants for large osteochondral defects of the femoral head and/or acetabulum. Methods: 10 patients who had undergone osteochondral allograft transplantation of the femoral head and/or acetabulum at our institution between 2013 and 2016 were identified from our Institutional Review Board-approved registry. Hip disability and Osteoarthritis Outcome Score (HOOS) was used to track patient progress. Results: 10 patients with an average clinical follow-up of 1.4 years were included in this study. 4 patients were treated solely with OCA plugs for femoral head defects, while the remaining 6 received femoral OCA plugs and at least 1 concomitant procedure for additional intraarticular pathology. 7 patients (70%) had successful functional outcomes, while 3 (30%) had unsuccessful outcomes and were subsequently converted to total hip arthroplasty (THA) 5 to 29 months after OCA. Conclusions: OCA transplantation can be an effective treatment strategy for young, healthy individuals with articular cartilage lesions of the hip. Smoking, avascular necrosis aetiology, acetabular involvement and concomitant procedures may be risk factors for unsuccessful outcomes necessitating salvage with THA. Long-term clinical studies to refine indications and determine functional outcomes and survival rates are warranted.
Soft tissue reinforcement with a Leeds-Keio artificial ligament in revision surgery for dislocated total hip arthroplasty
Authors: Aota Shigeo , Kikuchi Shin-ichi , Ohashi Hironori , Kitano Naoko , Hakozaki Michiyuki , Konno Shin-ichi 
Published: October 2017

Introduction: Since dislocation after total hip arthroplasty (THA) greatly diminishes patient’s quality of life, the THA frequently needs revision. However, it is common for the dislocation not to heal even after reconstruction, but rather to become intractable. Methods: The 17 patients with dislocated THA, mean age of 71 years (range 51-87 years), who underwent a revision THA together with soft tissue reinforcement with a Leeds-Keio (LK) ligament were enrolled. The purposes of reinforcement with LK ligament were to restrict the internal rotation of the hip joint, and to encourage the formation of fibrous tissue in the posterior acetabular wall to stabilise the femoral head. We determined the success rate of surgical treatment for dislocation, the Harris Hip Score (HHS), a factor of recurrent dislocation. Results: There was no recurrent dislocation in 82% of the cases (14 joints) during the mean postoperative follow-up period of 63.5 months (15-96 months). The HHS was 82 ± 18 points preoperatively and 82 ± 14 points postoperatively. Recurrent dislocation after this surgical procedure occurred in 2 hips with breakage of the LK ligaments, and intracapsular dislocation in 1 hip with loosening of the LK ligament. Conclusions: Although the risk of recurrent dislocation still exists with this procedure, when performed to provide reinforcement with an LK ligament for dislocated THA it may be useful in intractable cases with soft tissue defects around the hip joint.
Arthroscopic treatment of psoas abscess concurrent with septic arthritis of the hip joint
Authors: Kim Chul-Ho , Aditya Kekatpure , Lee Soong-Joon , Kim Hyo-June , Yoon Kang-Sup , Kim Hee-Joong , Yoon Pil-Whan 
Published: October 2017

Purpose: To describe the outcomes of 7 cases of psoas abscess concurrent with septic arthritis of the hip treated by hip arthroscopy alone. Methods: We retrospectively collected the data of patients who underwent arthroscopic drainage of psoas abscess concurrent with septic arthritis of the hip. Arthroscopic debridement was performed in both the central and peripheral hip joint compartments. In all cases, the iliopsoas compartment was accessed from the peripheral compartment through an anterior capsulotomy without limb traction. After debridement and drainage of the iliopsoas compartment, a suction drain tube was placed in the iliopsoas compartment through an enlarged anterior capsulotomy and another tube in the peripheral compartment. Postoperative intravenous antibiotics were administered on the basis of culture results; in cases with no positive culture, empirical antibiotics were administered for 4 to 6 weeks after surgery. Results: 7 patients underwent arthroscopic debridement and drainage for a psoas abscess concurrent with hip joint septic arthritis. Laboratory tests were normalized within 4 weeks after hip arthroscopy in all patients. At a median follow-up of 16 months (range, 13-30 months) after surgery, infection recurrence was absent in all patients. Conclusions: Arthroscopic debridement alone could be an effective treatment alternative to open surgery for psoas abscess concurrent with hip joint septic arthritis.
Hydroxyapatite decreases cytotoxicity of a glass ionomer cement by calcium fluoride uptake in vitro
Authors: Del Angel-Mosqueda Casiano , Hernandez-Delgadillo Rene , Rodríguez-Luis Osvelia E. , Ramírez-Rodríguez María T. , Munguía-Moreno Silvia , Zavala-Alonso Norma V. , Solís-Soto Juan M. , Nakagoshi-Cepeda María A. A. , Sánchez-Nájera Rosa I. , Nakagoshi-Cepeda Sergio E. , Cabral-Romero Claudio 
Published: October 2017

Background: Glass ionomer cements (GICs) are widely used in dentistry because of their remineralizing and cariostatic potential induced by fluoride. In vitro studies have reported cell toxicity triggered by GICs; however, the influence of hydroxyapatite (HAp) must be considered. The aim of this study was to evaluate the effect of HAp in decreasing the cytotoxicity of the GIC 3M Vitrebond in vitro. Methods: Samples of 3M Vitrebond (powder, liquid and light-cured) were incubated in Dulbecco’s modified Eagle’s medium–Ham’s F12 (DMEM-F12) for 24 hours at 37°C. Subsequently, the light-cured medium was treated with 100 mg/mL of HAp overnight. Toxicity of conditioned media diluted 1:2, 1:4, 1:8 and 1:20 was analyzed on human gingival fibroblasts (HGFs) using light microscopy and the fluorometric microculture cytotoxicity assay. The amounts of calcium fluoride (CaF2) were determined by the alizarin red S method. Results: The exposure of HGFs to light-cured induced cell death and morphological changes such as chromatin condensation, pyknotic nuclei and cytoplasmic modifications. Exposure to light-cured treated with HAp, significantly increased cell viability leading to mostly spindle-shaped cells (p<0.001). The concentration of CaF2 released by the light-cured was 200 ppm, although, in the light-cured/HAp conditioned medium, this quantity decreased to 88 ppm (p<0.01). Conclusions: These data suggest that HAp plays a protective role, decreasing the cytotoxic effect of 3M Vitrebond induced by CaF2.
Randomized feasibility trial of the Scleroderma Patient-centered Intervention Network hand exercise program (SPIN-HAND): Study protocol
Authors: Carrier Marie-Eve , Kwakkenbos Linda , Boutron Isabelle , Welling Joep , Sauve Maureen , van den Ende Cornelia , Schouffoer Anne A. , Hudson Marie , Thombs Brett D. , Mouthon Luc ,   SPIN Investigators*
Published: October 2017

Background: Significant functional impairment of the hands is nearly universal in systemic sclerosis (SSc, scleroderma). Hand exercises may improve hand function, but developing, testing and disseminating rehabilitation interventions in SSc is challenging. The Scleroderma Patient-centered Intervention Network (SPIN) was established to address this issue and has developed an online hand exercise program to improve hand function for SSc patients (SPIN-HAND). The aim of the proposed feasibility trial is to evaluate the feasibility of conducting a full-scale randomized controlled trial (RCT) of the SPIN-HAND intervention. Design and methods: The SPIN-HAND feasibility trial will be conducted via the SPIN Cohort. The SPIN Cohort was developed as a framework for embedded pragmatic trials using the cohort multiple RCT design. In total, 40 English-speaking SPIN Cohort participants with at least mild hand function limitations (Cochin Hand Function Scale ≥3) and an indicated interest in using an online hand-exercise intervention will be randomized with a 1:1 ratio to be offered to use the SPIN-HAND program or usual care for 3 months. The primary aim is to evaluate the trial implementation processes, required resources and management, scientific aspects, and participant acceptability and usage of the SPIN-HAND program. Discussion: The SPIN-HAND exercise program is a self-help tool that may improve hand function in patients with SSc. The SPIN-HAND feasibility trial will ensure that trial methodology is robust, feasible, and consistent with trial participant expectations. The results will guide adjustments that need to be implemented before undertaking a full-scale RCT of the SPIN-HAND program. Trial registration: ClinicalTrials.gov Identifier: NCT03092024.
Institutionele leegte: nieuwe bronnen, nieuwe uitdagingen
Authors: van Bueren Ellen , Klievink Bram 
Published: October 2017

Challenges and governance in institutional voids – a literature review
Societal and technological developments (such as the digital and energy revolutions) move faster than existing institutions can keep up with. The developments may lead to a metaphorical institutional void, which brings questions about the nature of the void, the changing rules, practices and responsibilities, and about the strategies to deal with the void. The concept has been around for a while but (again) seems relevant to understand current socio-technological innovations and challenges, that also allow us to further conceptualise the institutional void. In this introduction to the issue, we discuss the concept of an institutional void and explore how it is used in various domains of study, including public administration. We argue for how the concept is relevant today and therein also introduce the topics that are discussed in this special issue.
Onbetaalbare huizen en onderbenutte gebieden
Authors: Verheul Wouter Jan 
Published: October 2017

Unaffordable housing and underused areas: The institutional void of housing demand through urban transformation
In the Netherlands, as in many other countries, housing supply fails to meet the rapidly increasing housing demand in already densely urbanised areas, contributing to rising housing prices and possibly gentrification. The state and local governments aim to satisfy this demand by densifying urban areas and by transforming urban brownfields and vacant office parks into residential areas, thus containing urban sprawl. However, the private actors needed to redevelop these areas operate according to a different institutional logic and discourse: the market. According to this market logic, urban transform is too expensive, even when partly subsidized, and, to some extent, sprawl is unavoidable to satisfy housing demand. The two different logics fail to deliver the housing needed. Building discourse coalitions is suggested as a possible way out of this deadlocked debate, while government actors might also aim to influence the housing market with novel, market oriented policy instruments.
Crowd-based innovaties: verschuivende verantwoordelijkheden in een institutional void
Authors: Slot Thijs , Cuppen Eefje , Doorn Neelke , Galeano Galvan Maria , Klievink Bram 
Published: October 2017

Crowd-based innovations: shifting responsibilities in an institutional void
The crowd increasingly plays a key role in facilitating innovations in a variety of sectors, spurred on by IT-developments and the concomitant increase in connectivity. Initiatives in this direction, captured under the umbrella-term ‘crowd-based innovations’, offer novel opportunities in socio-technical systems by increasing the access, reach and speed of services. At the same time, they signify important challenges because these innovations occur in a context of traditional, well-established institutional and governance structures and practices. This dynamic is captured in the idea of the ‘institutional void’: the tension between traditional structures and (radically) new initiatives. Existing rules, standards and practices are challenged, which raises questions about the safeguarding of public values such as quality, legitimacy, efficiency and governance of crowd-based innovations. This article argues that understanding these tensions requires supplementing empirical research with an explicitly normative dimension to reach thorough and balanced conclusions to facilitate innovation while protecting the valuable elements in existing rules and regulations. Illustrated by a number of short examples, we propose a multidisciplinary research agenda towards formulating appropriate governance structures.
Kartels ontsluierd: heimelijkheid, vertrouwen en sociale inbedding
Authors: Jaspers Jelle David 
Published: October 2017

Uncovering cartel conduct: secrecy, trust and social embeddedness. How cartels remain hidden
In this article notions from literature on covert and illegal networks are applied to business cartels. Comparable to most criminal networks, cartel participants need to communicate in order to coordinate their activities, whilst under the risk of getting caught. Previous studies however show cartels can remain hidden from outsiders for long periods of time. Based on an analysis of fourteen Dutch cartel cases, this article addresses the question how cartels can remain hidden from outsiders for long periods of time. The analysis shows cartel participants communicate predominantly centralized and frequent. Moreover, the results show that not concealment but social embeddedness provides a strong explanation for the longevity of secrecy regarding cartels.
The benefits of working on improvisation in a choir for the development of stage competences
Authors: Piech-Sławecka Joanna 
Published: October 2017

Improvisation in a choir is a competence that can be developed. It influences musicality and allows for the realization of both unnotated works and compositions including elements of improvisation. Experiences of pedagogues and conductors show that this technique can be applied while working with a choral ensemble and its benefits may comprise the following: improved vocal and interpretational competences, development of choristers’ musical imagination, better cooperation within a group as well as more attentive listening to each other. These qualities translate directly into a set of stage competences in choral performance. Among the discussed problems, there can be found issues regarding selected concepts of teaching improvisation, its outcomes and an impact of that skill on an individual and group development.
Conductor – an artist and a person in the context of "List do artystów" ["A Letter to Artists"] by John Paul II
Authors: Majchrzak Marianna 
Published: October 2017

In his List do artystów [Letter to Artists], St. John Paul II formulated a very important concept of the manifestation of personality and spiritual development of an artist through his/her creative act. It would seem really interesting to look at a conductor’s work from that perspective. His/her artistic work is of a specific nature. A conductor is like Pontifex Maximus. One bridges a composer’s work with the audience through his/her person. Conductor’s personality, knowledge, maturity, choices, manner of interpretation and cooperation with an ensemble add particular value. Through art, a conductor affects oneself and influences the people with whom he/she communicates in the process of the development of a work. Does a conductor develop oneself and enrich others? Ancient Greeks coined the notion of kalokagathia, wherein they combined good with beauty. Plato wrote about the power of Good, hidden in the nature of Beauty. And the Pope – an artist and philosopher himself – admonished that through one’s life and actions, a human takes a stance on existence, truth and good.
Performance Characteristics of Body Fluid Cytology Analysis of 344 380 Responses From the College of American Pathologists Interlaboratory Comparison Program in Nongynecologic Cytopathology
Authors: Tabatabai Z. Laura , Nayar Ritu , Souers Rhona J. , Crothers Barbara A. , Davey Diane Davis 
Published: October 2017

Context.—Body fluid cytology is an important diagnostic tool used to identify various conditions. However, an accurate diagnosis in this setting can sometimes be challenging.Objective.—To identify the performance characteristics of body fluid cytology by analyzing participant responses from the College of American Pathologists Interlaboratory Comparison Program in Nongynecologic Cytopathology.Design.—Participant responses from 5102 slides were analyzed for concordance to the general category (GC) and to the reference diagnosis (RD). Nonlinear mixed models were used to analyze concordance.Results.—The overall GC concordance was 95.2%. The GC type, participant type, and preparation type were significantly associated with GC concordance (P &lt; .001). Concordance for malignant cases was higher than it was for benign cases. Cytotechnologists had better GC concordance compared to pathologists. ThinPrep (Hologic, Marlborough, Massachusetts) slides had the highest GC concordance. Participant type, fluid type, preparation type, and participant interpretation were significantly associated with RD concordance (P &lt; .001). Pathologists performed better than cytotechnologists did for RD concordance. Pericardial fluid had the lowest RD concordance, especially for cases with normal or reactive findings. Modified Giemsa–stained slides performed best for lymphoma and hematopoietic malignancy. Small cell carcinoma had the highest GC concordance, and its RD concordance was higher in pleural than in peritoneal fluids. Adenocarcinoma showed the highest concordance rates for both GC and RD.Conclusions.—This study illustrates the challenges associated with interpreting body fluid cytology, particularly in pericardial fluid, and the factors that may affect accurate diagnoses. The results also highlight the value of using multiple preparation types in challenging cases.
Immunohistochemistry in Peritoneal Mesothelioma: A Single-Center Experience of 244 Cases
Authors: Tandon Radhika Theresa , Jimenez-Cortez Yuis , Taub Robert , Borczuk Alain C. 
Published: October 2017

Context.—
Diagnosis of malignant mesothelioma is more common in the chest than it is in the abdomen. Most published immunohistochemistry data are more applicable to pleural than to peritoneal mesothelioma.

Objective.—
To clarify the practical utility of 17 immunohistochemistry markers in the differential diagnosis of peritoneal mesothelioma with an emphasis on stains for which there is either contradictory information or a paucity of literature.

Design.—
Consultation files of peritoneal mesothelioma diagnoses rendered from 1999 to 2014 were reviewed; 244 cases were identified. The results of immunohistochemistry markers performed were tabulated.

Results.—
Immunohistochemistry markers positive in peritoneal mesothelioma in order of sensitivity were calretinin (244 of 244; 100%), WT1 (205 of 218; 94%), CK5/6 (173 of 194; 89%), mesothelin (132 of 150; 88%), and D2-40 (78 of 97; 80%). Markers used to differentiate carcinoma from mesothelioma showed immunoreactivity in peritoneal mesothelioma: estrogen receptor (2 of 84; 2%), B72.3 (6 of 196; 3%), CK20 (5 of 116; 4%), CD15 (7 of 192; 4%), p63 (3 of 62; 5%), carcinoembryonic antigen (9 of 199; 5%), PAX8 (12 of 191; 6%), progesterone receptor (5 of 71; 7%), Ber-EP4 (17 of 209; 8%), and CD138 (9 of 91; 10%). BAP1 loss, increasingly used in the differential diagnosis of benign versus malignant mesothelial proliferation, occured in 55% (99 of 181) of peritoneal mesothelioma cases.

Conclusions.—
The results support the experience that there is no definitive marker to rule out malignant mesothelioma, including PAX8, estrogen receptor, progesterone receptor, and p63 immunoreactivity. The high rate of immunoreactivity for mesothelin may have a role as a predictive marker for immune targeting. BAP1 loss of 55% in this cohort of peritoneal mesothelioma confirms published observations, and BAP1 retention is seen in a significant proportion of neoplastic cases.