bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pediatric septic arthritis of the hip: the benefit of hip arthroscopy by extracapsular (outside-in) approach
Authors: Jan Nicolas , Pietrzak Julien , Baudoux Matthieu , Kaba Arnaud 
Published: February 2020

Background: Pediatric septic arthritis of the hip is a surgical emergency. Facing a hip flexum and fever, surgeons can use comparative ultrasound to confirm the diagnosis and to establish the surgical indication. While needle aspiration-irrigation is a simple and quick method, it gives rise to a high rate of recurrence. The purpose of our study was to demonstrate that hip arthroscopy by extracapsular approach is an effective and accessible alternative applicable in emergency situations. Methods: This is a report of 2 cases (7 years-135 cm; 13 years-143 cm) of needle aspiration-irrigation failure subsequently treated by hip arthroscopy. The X-ray and arthroscopy-assisted extracapsular technique was performed on a conventional orthopedic table, using a 30 degree arthroscope and a 3.5mm diameter motorized knife. Minimally invasive anterior longitudinal capsulotomy was performed by 2 anterolateral approaches via the proximal and distal tensor Fasciae Latae muscle, without dedicated instrumentation, followed by sampling, irrigation, removal of false membranes, synovial biopsies, partial synovectomy, cartilage assessment of the central then peripheral compartment and placement of a drainage. Results: In both cases, effusion completely disappeared and the inflammatory process gradually normalized with antibiotic therapy without any repeat procedure or complications related to the approach. Weight bearing was resumed in 3 weeks. Postoperatively, in 6 months and 15 months respectively, after resumption of sports activities hip examination was painless and no damage was noted on x-rays in either case. Conclusion: In our experience, hip arthroscopy by extracapsular approach can effectively address cases of failed needle aspiration-irrigation in pediatric septic arthritis of the hip. It could be provided as first-line emergency treatment in the event of purulent septic arthritis or late management, as a replacement for arthrotomy.
External snapping hip: a new technique for ultrasound-assisted sectioning of the iliotibial band
Authors: Coulomb Rémy , Cascales Valentin , Mares Olivier , Bertrand Martin , Marchand Philippe , Kouyoumdjian Pascal 
Published: February 2020

Background: External snapping hip (ESH) is the most typical form of coxa saltans and is caused by the iliotibial band (ITB) slipping over the greater trochanter (GT) during a hip movement. In combination with a typical interview and specific clinical tests, dynamic ultrasound imaging appears to be an important tool to confirm the diagnosis and precisely identify the cause of slipping. Surgical treatment is indicated in some cases of symptomatic ESH that are refractory to well-managed conservative treatment, in selected patients. Many procedures have been described, from open surgery to endoscopy. The purpose of this study was to (1) describe and (2) compare a new technique for ultrasound-assisted sectioning of the iliotibial band with a similar endoscopic technique, in terms of sectioning rates, iatrogenic injuries, learning curve and material cost. Methods: An anatomic study was conducted. After a feasibility study to describe the technique, 6 specimens were available, i.e. 12 hips. Both procedures were carried out on each specimen followed by an open control procedure to take measurements. A junior surgeon carried out all the procedures. Results: The average sectioning rate of the ITB was 92% in the ultrasound group, compared to 90% in the endoscopy group. No iatrogenic injuries were noted, including nerve damage. The average duration of the ultrasound procedure was 15 minutes compared to 24.7 minutes for endoscopy, with a decrease by a factor of 2 to 3 between the first and last procedure, regardless of the technique. Incomplete sectioning rates were noted at the beginning of the study and all reached 100% by the 4th procedure, regardless of the technique. The ultrasound procedure was 1.8 times less expensive in terms of equipment than the endoscopic procedure, and up to 3 times less expensive in terms of consumables alone (119.56 euros vs 353.48 euros). Conclusion: This technique of ultrasound-assisted sectioning of the ITB seems to be as effective and safe as a similar endoscopic technique, with an attainable learning curve for surgeons in training, for an average period and with lower material costs.
Intra-articular echo-endoscopy during shoulder arthroscopy: an anatomical feasibility study
Authors: Lateur Gabriel , Bentejac Antonin , Pailhé Regis , Bacry Maureen Cohen , Chanrion Marie Anne , Custillon Guillaume , Vettier Benoit , Voros Sandrine , Moreau-Gaudry Alexandre 
Published: February 2020

Background: The development of an ultrasound probe that can be used through an arthroscopic portal would provide direct access to the deep tissues of the shoulder. These structures are sometimes barely seen with an external ultrasound system and are also difficult to analyze under arthroscopy. Therefore, this intraoperative imaging technique could refine the diagnosis and surgical procedure and as a result provide more adequate therapy. The main objective of the study was to evaluate the feasibility of using an echo-endoscope to produce images during shoulder arthroscopy without causing secondary lesions. The secondary objective was to detect rotator cuff tears, calcific tendonitis, chondropathies, acromioclavicular arthropathy and labral tears. Methods: We used 6 shoulders of 3 anatomic subjects. The endo-ultrasound system used was the M15 probe developed by the society Cartimage Medical SAS® . The eleven structure of interest included in the principal objective of the study were: the tendon of the long head of the biceps, the glenoid and humeral cartilage surface, the gleno humeral ligament, the labrum, the rotator cuff tendon on their acromial and articular surfaces and the acromioclavicular joint. We noticed all lesions induced by the probe and we measured the acquisition time for the ultrasound images. The validation of the principles and secondary objectives were assessed by independent observer during the manipulations which were realized by one unique shoulder surgeon specialized in arthroscopic surgery. Results: We were able to produce ultrasound images of 68% of all the structures of interest. The inability to acquire certain images was partially due to the fact that the subjects were elderly (average age 90 years) and therefore, the structures of interest were no longer present. The secondary objective was partially fulfilled with the detection of complete tears of the supraspinatus tendon in 3 shoulders. We were also able to produce images of partial tears in the intra-tendinous cleavage. Intra-tendinous calcifications were explored in 1 shoulder. Humeral or glenoid chondropathy was identified in all the shoulders examined. Finally, no ultrasound-induced injuries were noted in any of the 6 shoulders in the study. The image acquisition time with the echo-endoscope was no more than 20 minutes for each shoulder, with an average time of 10 min 15 sec for shoulders with complete tissue evaluation. Conclusion: The echo-endoscope was easy and safe to use to acquire ultrasound images of the different glenohumeral or subacromial structures during shoulder arthroscopy. These results open the way for further explorations with the echo-endoscope.
Validity of the construction of the ArthroSTM FAST and SHOULDER virtual reality simulator: validation in the NOVICE, CONFIRMED and EXPERTS cohorts
Authors: Bernard Elise , Walbron Paul , Sirveaux François , Common Harold , Thomazeau Hervé , Guyen Tran N 
Published: February 2020

Background: Recently, training in arthroscopy was improved with the integration of virtual reality (VR) simulators which enable semi-autonomous learning for novices. The NOVICE cohort confirmed that residents had better basic triangulation skills when they followed a regular 6-month VR simulator program, instead of occasional workshop-type training. We attempted to discover whether the skills of novices recorded for the NOVICE cohort were different from those of residents at the end of the degree course (CONFIRMED) or those of expert practitioners (EXPERTS), according to the type of training. Methods: 2 new cohorts were formed: French residents at the end of training (CONFIRMED), and international shoulder experts (EXPERTS). They all performed “Periscoping” and “Catch the stars Glenohumeral” exercises in a single session with 3 trials, and completed the same questionnaire. Their results were compared to those of the NOVICE cohort with 6 trials after 6 months without specific training (NOVICE A), with occasional training (NOVICE B) or with regular training on a VR simulator for 6 months (NOVICE C). The variables of Time, Camera Alignment, Camera Movement and Clamp Movement were analyzed. Results: For the Periscoping exercise, there was a significant difference in Time (EXPERTS: 138s, CONFIRMED: 110s, NOVICE A: 149s (p > 0.0001) and NOVICE C: 129s (p=0.00976)), Camera Alignment (EXPERTS: 81%, CONFIRMED: 87%, NOVICE A: 92% (p > 0.00141)), and Camera Movement (EXPERTS: 123cm, CONFIRMED: 101cm, NOVICE A: 126cm, NOVICE B: 114cm, NOVICE C: 115cm (p > 0.0001)). For the Catch the stars exercise, there was a significant difference in Time, (EXPERTS: 81s, CONFIRMED: 143s, NOVICE A: 121s, NOVICE B: 105s, NOVICE C: 112s (p > 0.0001)), Camera Movement (EXPERTS 41cm, CONFIRMED 63cm, NOVICE A 52cm, NOVICE B 45cm, NOVICE C 51cm (p > 0.0001)) and Clamp Movement (EXPERTS 116cm, CONFIRMED 204cm, NOVICE A 155cm, NOVICE B 146cm, NOVICE C 157cm (p > 0.0001)). Conclusion: The ‘Catch the stars’ exercise seemed to be an exercise that distinguishes the different levels of expertise, and was closer to the daily practice of arthroscopy. The Periscoping exercise was designed to teach the basics of triangulation, and novices who had many trials were likely to perform better than experts after three trials.
Suprascapular nerve block - do it yourself
Authors: Laumonerie Pierre , Blasco Laurent , Tibbo Meagan E , Kerezoudis Panagiotis , Bonnevialle Nicolas , Mansat Pierre 
Published: February 2020

Background: Suprascapular nerve (SSN) block using bone reference points (BARO) is a technique that in principle is accessible to practitioners without experience in locoregional anesthesia or ultrasound guidance. The primary objective was to validate the feasibility of SSN BARO by an orthopedic surgeon. The secondary objective was to provide a description of the path of the sensory branches from the SSN to the shoulder. Methods: A BARO was performed on 15 cadaveric shoulders by an intern in orthopedic surgery. Ten ml of methylene blue and 0.75% ropivocaine were injected around the SSN. 2.5ml of a red latex solution were also injected to identify the injection site. The distribution of the sensory branches of the NSS was also described. Results: The average distance between the SSN and the injection site was 1.5cm (0-4.5cm). The most frequent injection site was the proximal third of the scapular neck. Fifteen SSNs were marked upstream of the origin of the sensory branches. The 15 SSN produced 3 sensory branches that innervate the posterior glenohumeral capsule, the subacromial bursa, and the coracoclavicular and acromioclavicular ligaments. Conclusion: SSN BARO by an orthopedic surgeon is a simple, reliable, and accurate technique. Injection near the suprascapular notch is recommended to mark the SSN upstream of its three sensory branches.
Developmental trajectory of communication repair in children with Fragile X Syndrome
Authors: Fielding-Gebhardt Heather , Warren Steven F , Brady Nancy C 
Published: February 2020

Background and aims The development of communicative competence requires both language and social skills. The ability to repair following a communication breakdown is critical for continued conversational interchange and to ensure comprehension of bids for communication. Communication repair demonstrates adequate language and social skills. Children with Fragile X Syndrome have difficulty with language development and social skills, which may result in delays or deficits in repair. Repair may be additionally impaired in children with Fragile X Syndrome and co-morbid autism. This study examined the development of repair in children with Fragile X Syndrome from toddlerhood into middle childhood. Methods Fifty-five children with Fragile X Syndrome and their biological mothers participated. Data were collected during in-home visits approximately every 18 months. Videotaped mother–child interactions were collected, as well as standardized assessments of language, social skills, and autism symptomology. Results Children with Fragile X Syndrome acquired the ability to repair at 90% mastery by three-and-a-half years of age. Multilevel logistic regressions predicting probability of repair indicated marginally significant effects of mean length of utterance and number of different words, and significant effects of global social skills and autism symptomology. Effect sizes were small to moderate. Conclusions Ability to repair was measured in a naturalistic setting, which allowed children with Fragile X Syndrome to utilize repairs in their daily interactions. Although children with Fragile X Syndrome may have delayed development of repair relative to typically developing expectations, in general they nonetheless catch up and demonstrate a robust ability to repair by three-and-a-half years of age. However, this study provides evidence that individual differences in language and social skills may influence ability to repair in children with Fragile X Syndrome. Finally, the relationship between autism symptoms and repair remains unclear, necessitating further exploration. Implications: Given the noted delay in repair in young children with Fragile X Syndrome, clinicians working with this population should target development of this skill as early as possible to maximize successful social interactions. This may be particularly necessary for children with Fragile X Syndrome and co-morbid autism.
The use of deuterium-labeled gamma-aminobutyric (D6-GABA) to study uptake, translocation, and metabolism of exogenous GABA in plants
Authors: Hijaz Faraj , Killiny Nabil 
Published: February 2020

Abstract
Background
Exogenous application of gamma-aminobutyric acid (GABA) could relieve stress symptoms caused by abiotic stresses including anoxia, heat and cold shock, drought, and salt. However, studying translocation and metabolism of exogenous GABA is challenged by the presence of endogenous GABA.

Results
Herein, we used D6-GABA in order to investigate the uptake, translocation, and the metabolism of exogenous GABA in Mexican lime (Citrus aurantifolia) seedlings using gas chromatography-mass spectrometry (GC–MS). The GC–MS analysis showed that D6-GABA could be easily distinguished from the non-labeled GABA after methyl chloroformate (MCF) derivatization. The D6-GABA was detected in the cortex (phloem), inner stem (xylem), and leaves after root drench. Girdling did not affect the translocation of D6-GABA, indicating that it is mainly translocated via the xylem. In addition, D4-labled succinic acid was detected in D6-GABA-treated plants, indicating that exogenous GABA was metabolized to succinic acid. The half-life of D6-GABA in citrus was about 1.3 h, indicating a quick conversion to succinic acid.

Conclusion
The use of D6-GABA offers a valuable tool to study the translocation and metabolism of GABA in plants. D6-GABA and its metabolite (D4-succinic acid) can be easily distinguished from the endogenous GABA and succinic acid using GC–MS.
Promoting sport participation during early parenthood: a randomized controlled trial protocol
Authors: Grant Stina J. , Beauchamp Mark R. , Blanchard Chris M. , Carson Valerie , Rhodes Ryan E. 
Published: February 2020

Abstract
Background
Adult participation in sport is associated with important positive psychosocial outcomes. Despite the multitude of benefits that have been linked to sport participation, adult participation rates in Canada remain low. Parents with young children represent a demographic that may benefit considerably from sport participation, given the prevalence of inactivity coupled with increased levels of psychosocial distress among this group. This study aims to evaluate the efficacy of two types of sport participation (individual sport and team sport) on key psychosocial outcomes compared with a “personal time” control condition among parents with young children.

Methods/design
The three-arm, parallel design, single-blind, randomized controlled trial will compare a team sport condition, an individual sport condition, and a “personal time” control condition over 3 months. Parents are eligible if they have a child under 13 years of age, are not participating in a sport at baseline, and are not meeting Canadian Physical Activity Guidelines. Psychosocial variables (quality of life, relationship satisfaction, social functioning, parental stress, and enjoyment) will be assessed at baseline, 6 weeks, and 3 months. A total of 161 parents have been recruited thus far from the Greater Victoria region in British Columbia, Canada. The study is ongoing with a target goal of 240 participants and an anticipated completion date of December 2021.

Discussion
This protocol describes the implementation of a randomized controlled trial that evaluates the effectiveness of sport participation for increasing positive psychosocial outcomes. This information could prove useful for future adult sport participation and potentially inform public health initiatives involving parents and families.

Trial registration
ClinicalTrials.gov, NCT02898285. Registered 13 September 2016.
Gene expression profiles of bovine uninucleate trophoblast cells and trophoblast giant cells: a data note
Authors: Polei Marina , Günther Juliane , Koczan Dirk , Fürbass Rainer 
Published: February 2020

Abstract
Objectives
In the bovine placenta, intimate fetomaternal contact is restricted to placentomes. Within the placentomes fetal chorionic villi interdigitate with corresponding maternal caruncular crypts. The trophoblast epithelium covering the chorionic villi consists of 80% uninucleate trophoblast cells (UTCs) and 20% trophoblast giant cells (TGCs). TGCs migrate toward the endometrium and fuse with endometrial cells to form short-lived fetomaternal hybrid cells. Thereby the TGCs transport molecules of fetal origin across the placental barrier into the maternal compartment. The UTC/TGC ratio is constant during pregnancy because UTCs can differentiate into new TGCs to replace spent TGCs. However, our understanding of this differentiation process was sparse. Therefore, we collected the data to study the gene expression profiles in UTCs and TGCs and to identify differently expressed genes between the two trophoblast cell populations. Using Gene Ontology analysis, we wanted to identify biological processes and pathways that play an important role in the differentiation of UTCs into TGCs.

Data description
Bovine placentas were from days 118 to 130 of gestation. We obtained virtually pure UTCs and TGCs using a fluorescence-activated cell sorting (FACS) method. Total RNA was extracted from the UTC and TGC isolates, labeled and hybridized to Affymetrix Bovine Gene 1.0 ST Arrays.
Identifying correctness data scheme for aggregating data in cluster heads of wireless sensor network based on naive Bayes classification
Authors: Chu Shu-Chuan , Dao Thi-Kien , Pan Jeng-Shyang , Nguyen Trong-The 
Published: February 2020

AbstractWireless sensor network (WSN) has been paid more attention by scholars due to the practical communication of a system of devices to transfer information gathered from a monitored field through wireless links. Precise and accurate data of aggregating messages from sensor nodes is a vital demand for a success WSN application. This paper proposes a new scheme of identifying the correctness data scheme for aggregating data in cluster heads in hierarchical WSN based on naive Bayes classification. The collecting environmental information includes temperature, humidity, sound, and pollution levels, from sensor nodes to cluster heads that classify data fault and aggregate and transfer them to the base station. The collecting data is classified based on the classifier to aggregate in the cluster head of WSN. Compared with some existing methods, the proposed method offers an effective way of forwarding the correct data in WSN applications.
Existence of multiple positive solutions for a truncated Kirchhoff-type system involving weight functions and concave–convex nonlinearities
Authors: Lou Qingjun , Qin Yupeng 
Published: February 2020

AbstractWe consider the combined effect of concave–convex nonlinearities on the number of solutions for an indefinite truncated Kirchhoff-type system involving the weight functions. When $\alpha+ \beta<4$α+β<4, since the concave-convex nonlinearities do not satisfy the mountain pass geometry, it is difficult to obtain a bounded Palais–Smale sequence by the usual mountain pass theorem. To overcome the problem, we properly introduce a method of Nehari manifold and then establish the existence of multiple positive solutions when the pair of the parameters is under a certain range.
Infection control link nurse programs in Dutch acute care hospitals; a mixed-methods study
Authors: Dekker Mireille , van Mansfeld Rosa , Vandenbroucke-Grauls Christina , de Bruijne Martine , Jongerden Irene 
Published: February 2020

Abstract
Background
Infection control link nurse programs show considerable variation. We report how Dutch link nurse programs are organized, how they progress, and how contextual factors may play a role in the execution of these programs.

Methods
This mixed-methods study combined a survey and semi-structured interviews with infection control practitioners, based on items of the Template for Intervention Description and Replication (TIDieR) checklist.

Results
The Netherlands has 74 hospitals; 72 infection control practitioners from 72 different hospitals participated in the survey. Four of these infection control practitioners participated in interviews. A link nurse program was present in 67% of the hospitals; responsibility for 76% of these programs lied solely with the infection prevention and control team. The core component of most programs (90%) was education. Programs that included education on infection prevention topics and training in implementation skills were perceived as more effective than programs without such education or programs where education included only infection prevention topics.
The interviews illustrated that these programs were initiated by the infection prevention team with the intention to collaborate with other departments to improve practice. Content for these programs was created at the time of their implementation. Infection control practitioners varied in their ability to express program goals and to engage experts and key stakeholders.

Conclusions
Infection control link nurse programs vary in content and in set up. Programs with a clear educational content are viewed as more successful by the infection control practitioners that implement these programs.