{"title":"Review of the Influences of Sex Differences on Health and Disease: What Is the Role of Journals?","authors":"Judith G Regensteiner,Kimberly Templeton","doi":"10.2106/jbjs.24.00297","DOIUrl":"https://doi.org/10.2106/jbjs.24.00297","url":null,"abstract":"➢ Sex-based differences are understudied, which has potential consequences for the health of everyone.➢ Women's health is particularly affected given a lack of sex-specific data across many disease states.➢ Journals do not consistently require the inclusion of both sexes and the disaggregation of data by sex in cell, animal model, and human studies.➢ Instructions for investigators and journals regarding the inclusion of sex-specific data are found in guidelines such as those by the Sex and Gender Equity in Research (SAGER) group, but these guidelines are underutilized.➢ Consistency in the inclusion of both sexes in studies (except in studies on diseases affecting only 1 sex), as well as in the disaggregation and reporting of results by sex, has the potential to improve health for all people.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"What's Important: Breaking Bread Together, Finding an Extracurricular Pursuit.","authors":"Stephen P Maier","doi":"10.2106/jbjs.24.00718","DOIUrl":"https://doi.org/10.2106/jbjs.24.00718","url":null,"abstract":"","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rebecca J Schultz,Jason Z Amaral,Matthew J Parham,Raymond L Kitziger,Tiffany M Lee,Scott D McKay,Basel M Touban
{"title":"Sagittal Fragment Rotation and Ogden Type-I Classification Are Hallmarks of Combined Tibial Tubercle Fracture and Patellar Tendon Injury.","authors":"Rebecca J Schultz,Jason Z Amaral,Matthew J Parham,Raymond L Kitziger,Tiffany M Lee,Scott D McKay,Basel M Touban","doi":"10.2106/jbjs.24.00300","DOIUrl":"https://doi.org/10.2106/jbjs.24.00300","url":null,"abstract":"BACKGROUNDTibial tubercle fractures (TTFs) are uncommon injuries, comprising <3% of all proximal tibial fractures. These fractures occasionally occur in conjunction with a patellar tendon injury (PTI). We aimed to identify risk factors associated with combined TTF and PTI.METHODSA retrospective review was performed of patients presenting to a single, tertiary children's hospital with TTF between 2012 and 2023. Demographic data, operative details, radiographs, and injury patterns were analyzed. Radiographs were assessed for the epiphyseal union stage (EUS), Ogden classification, and fracture patterns. Multiple logistic regression models were used to assess the impact of body mass index, comminution, fracture fragment rotation, EUS, bilateral injury, and Ogden classification on injury type.RESULTSWe identified 262 fractures in 252 patients (mean age, 13.9 ± 1.31 years). Of the patients, 6% were female and 48% were Black. Of the 262 fractures, 228 (87%) were isolated TTFs and 34 (13%) were TTFs with PTI. Multivariable analysis demonstrated fragment rotation on lateral radiographs (p < 0.0001) and Ogden Type-I classification (p < 0.0001) to be the most predictive risk factors for a combined injury. Rotation was associated with a substantial increase in the odds of a combined injury, with an odds ratio of 22.1 (95% confidence interval [CI], 6.1 to 80.1). Ogden Type-I fracture was another significant risk factor, with an odds ratio of 10.2 (95% CI, 3.4 to 30.4).CONCLUSIONSThe Ogden classification and fragment rotation are the most useful features for distinguishing between isolated TTF and combined TTF with PTI. This is the first study to identify risk factors for TTF combined with PTI. Surgeons may use this information to aid in preoperative planning.LEVEL OF EVIDENCEDiagnostic Level III. See Instructions for Authors for a complete description of levels of evidence.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jonathan D McKeeman,Dustin A Greenhill,Akhil Sharma,John J Harrast,David F Martin,Douglas W Lundy
{"title":"Do Half of Orthopaedic Surgeons Change Jobs within Their First 2 Years?: An Analysis Using the American Board of Orthopaedic Surgery Database.","authors":"Jonathan D McKeeman,Dustin A Greenhill,Akhil Sharma,John J Harrast,David F Martin,Douglas W Lundy","doi":"10.2106/jbjs.24.00040","DOIUrl":"https://doi.org/10.2106/jbjs.24.00040","url":null,"abstract":"BACKGROUNDThe claim that \"50% of orthopaedic surgeons leave their first job within 2 years\" did not originate from evidence. The purpose of this study was to investigate practice change rates among board- eligible orthopaedic surgeons using the American Board of Orthopaedic Surgery (ABOS) database.METHODSWe utilized information provided by orthopaedic surgeons taking the ABOS Part II Examination across 6 different years. Surgeons who trained outside of the United States and members of the uniformed services of the U.S. were excluded. Move rates within 2 years of starting practice and before the candidate's Part II examination were determined. All surgeons were then subcategorized as having followed a traditional or nontraditional certification timeline based on whether they took Part II of the examination within 2 practice years after becoming board-eligible. Candidate-specific variables were analyzed according to whether the surgeon did or did not change practices.RESULTSAmong 3,784 orthopaedic surgeons, 215 (5.7%) left their first practice within 2 years. On average, candidates sat for the Part II examination at a mean (and standard deviation) of 2.1 ± 1.1 years (range, 0.7 to 31.9 years) after reporting their first practice location. Seventy-six percent of surgeons took the Part II examination within a traditional timeframe. On average, nontraditional candidates left their first practice at a significantly higher rate than traditional candidates (20.5% versus 1.3%; p < 0.001), changed practices more often (1.5 versus 1.2 moves; p = 0.021), and moved farther (500.1 versus 304.4 miles; p = 0.023). Fellowship training and/or Part II examination subspecialty were not strongly associated with a surgeon leaving his or her first practice.CONCLUSIONSWhile it is possible that >5.7% of orthopaedic surgeons leave their first job during their early career, it is unlikely that many relocate within 2 years. This is especially true among orthopaedic surgeons pursuing ABOS certification within a traditional timeframe.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"What's Important: Equitable Orthopaedic Care for Patients with Disabilities.","authors":"Uma Balachandran,Brocha Z Stern","doi":"10.2106/jbjs.24.00470","DOIUrl":"https://doi.org/10.2106/jbjs.24.00470","url":null,"abstract":"","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael McAuliffe,Ibrahim Darwish,Jon Anderson,Alex Nicholls,Sophie Corfield,Dylan Harries,Christopher Vertullo
{"title":"Association of Technology Usage and Decreased Revision TKA Rates for Low-Volume Surgeons Using an Optimal Prosthesis Combination: An Analysis of 53,264 Primary TKAs.","authors":"Michael McAuliffe,Ibrahim Darwish,Jon Anderson,Alex Nicholls,Sophie Corfield,Dylan Harries,Christopher Vertullo","doi":"10.2106/jbjs.24.00539","DOIUrl":"https://doi.org/10.2106/jbjs.24.00539","url":null,"abstract":"BACKGROUNDTechnology (navigation and robotics) usage during total knee arthroplasty (TKA) is often supported by literature involving high-volume surgeons and hospitals, but the value of technology for lower-volume surgeons is uncertain. This study aimed to determine if there was a relationship among surgeon volume, technology usage, and revision rate when using an optimal prosthesis combination (OPC).METHODSAustralian Orthopaedic Association National Joint Replacement Registry (AOANJRR) data were obtained from January 1, 2008, to December 31, 2022, for all primary TKA procedures performed for osteoarthritis using an OPC by a known surgeon ≥5 years after their first recorded procedure. The interaction between surgeon volume and conventional-instrumentation (CV) versus technology-assisted (TA) TKA was assessed. The cumulative percent revision (CPR) was determined by Kaplan-Meier estimates. Cox proportional-hazards methods were used to compare rates of revision by surgeon volume and by the interaction of volume and technology. Subanalyses were undertaken to examine major and minor revisions separately, and to assess the influence of technology on revision rates relative to those of a surgeon undertaking 100 TKA/year.RESULTSOf the 53,264 procedures that met the inclusion criteria, 31,536 were TA-TKA and 21,728 were CV-TKA. Use of technology reduced the all-cause revision rate for surgeons with a volume of <50 TKA/year and the rate of minor revisions for surgeons with a volume of <40 TKA/year. No interaction between surgeon volume and the rate of major revision surgery was found. With CV-TKA by a surgeon with a 100-TKA/year volume as the comparator, all-cause and major revision rates were significantly elevated for surgeons undertaking <50 and <100 TKA/year, respectively. In contrast, analysis of TA-TKA showed no difference in rates of all-cause or major revisions for surgeons undertaking <100 TKA/year compared with 100 TKA/year.CONCLUSIONSTA-TKA was associated with a decrease in the revision rate for lower-volume surgeons but no significant alterations in revision rate for higher-volume surgeons. Preferential use of TA-TKA by lower-volume surgeons should be considered.LEVEL OF EVIDENCETherapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhenxing Shao,Yanfang Jiang,Qingfa Song,Hangle Wang,Hao Luo,Xu Cheng,Guoqing Cui
{"title":"Short-Term Complications of Arthroscopic Bristow or Latarjet Procedure with Screw Versus Suture-Button Fixation: A Prospective Study of 308 Consecutive Cases by a Single Surgeon.","authors":"Zhenxing Shao,Yanfang Jiang,Qingfa Song,Hangle Wang,Hao Luo,Xu Cheng,Guoqing Cui","doi":"10.2106/jbjs.23.00390","DOIUrl":"https://doi.org/10.2106/jbjs.23.00390","url":null,"abstract":"BACKGROUNDThis study aimed to investigate the short-term complications (minimum 1-year follow-up) after either an arthroscopic Bristow or Latarjet procedure for anterior shoulder instability utilizing screw or suture-button fixation.METHODSPatients undergoing arthroscopic Bristow or Latarjet procedures between November 2016 and April 2021 were enrolled. Data were collected at baseline, 3 months, 6 months, and every year after surgery. Risks of postoperative complications and unplanned reoperations were assessed. A multivariable regression model was used to identify risk factors for complications and to determine the association of complications with patient-reported outcomes.RESULTSA total of 412 patients (425 shoulders) undergoing arthroscopic Bristow or Latarjet procedures performed by a single surgeon between November 2016 and April 2021 were reviewed. Two hundred and ninety-nine patients (308 shoulders, 76.2% of 404 eligible) with a mean follow-up of 22.3 ± 4.2 months were included for analysis. Two hundred and sixty-nine shoulders (87.3%) underwent a Bristow procedure (165 with screw and 104 with suture-button fixation), while 39 (12.7%) underwent a Latarjet procedure (18 with screw and 21 with suture-button fixation). Eighty-two patients (83 shoulders) reported a total of 85 complications within 2 years after surgery, with an overall complication rate of 26.9%. The rates of recurrent dislocation or subluxation and infection were 1.9% and 0.6%, respectively, while a total of 4 (1.3%) of the shoulders had unplanned reoperations. The most common complications were graft-related (11.7%), followed by complications involving neurologic symptoms (10.7%). The overall, graft, and neurologic complication rates following Bristow or Latarjet procedures were 27.1% versus 25.6%, 12.3% versus 7.7%, and 10.0% versus 15.4%, respectively. Compared with the Bristow technique with screw fixation, Bristow with suture-button fixation yielded a lower risk of any complications (odds ratio [OR], 0.55; p = 0.04). Paying with rural insurance and poor sleep quality prior to surgery were associated with increased risk of any complications.CONCLUSIONSCompared with arthroscopic Bristow procedures with screw fixation, Bristow procedures with suture-button fixation resulted in a lower overall complication risk. Both patient demographic and implant-specific factors were associated with the development of a complication.LEVEL OF EVIDENCETherapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Binghao Wang,Teng Ye,Binbin Zhang,Yukai Wang,Yi Zhu,Congfeng Luo
{"title":"Relationship of Fracture Morphological Characteristics with Posterolateral Corner Injuries in Hyperextension Varus Tibial Plateau Fractures.","authors":"Binghao Wang,Teng Ye,Binbin Zhang,Yukai Wang,Yi Zhu,Congfeng Luo","doi":"10.2106/jbjs.23.01274","DOIUrl":"https://doi.org/10.2106/jbjs.23.01274","url":null,"abstract":"BACKGROUNDHyperextension varus tibial plateau fracture (HVTPF) is known to present with concomitant injuries to the posterolateral corner (PLC). However, the exact rate and characteristics of these injuries remain unclear. The primary objective of this study was to explore the rate and characteristics of PLC injuries in HVTPFs. The secondary objective was to investigate the relationship between the fracture morphological features and the associated PLC injuries.METHODSPatients with HVTPFs were subdivided into 2 groups: group I (without fracture of the posterior column cortex) and group II (with fracture of the posterior column cortex). Fracture characteristics were summarized qualitatively based on fracture maps and quantitatively based on the counts of morphological parameters. Knee ligamentous and meniscal injuries were assessed using magnetic resonance imaging. The association between fracture characteristics and PLC injuries was analyzed.RESULTSWe included a total of 50 patients with HVTPFs in our study: 28 in group I and 22 in group II. The rate of PLC injuries was 28.6% in group I and 27.3% in group II. In group I, patients with PLC injuries showed fracture lines closer to the anterior rim of the medial plateau and had smaller fracture areas. Furthermore, 6 of the 8 patients with PLC injuries in group I also had posterior cruciate ligament injuries.CONCLUSIONSThe rate of PLC injuries is relatively high in HVTPFs. In HVTPFs without fracture of the posterior column cortex, a small fracture area strongly suggests an accompanying PLC injury, and PLC injury is frequently combined with posterior cruciate ligament injury.LEVEL OF EVIDENCEPrognostic Level III. See Instructions for Authors for a complete description of levels of evidence.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142324961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simplifying the Orientation of S1 Iliosacral Screws for Placement in the Dysmorphic Sacrum.","authors":"Hongmin Cai,Yingchao Yin,Ruipeng Zhang,Lin Liu,Tao Wang,Zhiyong Hou","doi":"10.2106/jbjs.23.01416","DOIUrl":"https://doi.org/10.2106/jbjs.23.01416","url":null,"abstract":"BACKGROUNDDetermining the proper iliosacral screw orientation in a dysmorphic S1 sacral segment using a C-arm is difficult, and pelvic computed tomography (CT) is often necessary for the preoperative planning. On the preoperative pelvic axial CT section, the intended screw trajectory can be delineated intraosseously along the axis of the oblique osseous corridor. An inherently accurate orientation would be determined by 2 factors: (1) the trajectory is in the pelvic transverse plane, and (2) it is oriented relative to the coronal plane at a patient-specific angle, which should be measured preoperatively. Based on the above reasoning, we aimed to simplify and verify the orientation.METHODSAfter establishing the starting point on the sacral lateral view, we tested a method of simplifying the guidewire orientation: placing the guidewire in the pelvic transverse plane and then manipulating it to be angled relative to the coronal plane at the preoperatively measured patient-specific angle. The guidewire orientation should then be reproducibly accurate on the pelvic outlet and inlet views. The feasibility and safety of our method were verified through computer-simulated virtual surgical procedures in 95 dysmorphic sacra and clinical surgical procedures in 12 patients. The primary outcome parameters were the guidewire orientation and screw placement accuracy.RESULTSUsing our method, the S1 guidewire orientation was reproducibly accurate on the pelvic outlet and inlet views in all of the virtual and clinical surgical procedures. Ninety-five virtual S1 screws (1 screw in each left hemipelvis) were placed intraosseously in the pelvic transverse plane. Fourteen unilateral S1 screws were placed intraosseously in the pelvic transverse plane in the 12 patients (2 patients had double screws) without iatrogenic injuries.CONCLUSIONSThe guidewire orientation can be simplified by placing the guidewire in the pelvic transverse plane and replicating the preoperatively measured patient-specific angle between the guidewire and the coronal plane. After establishing the starting point on the sacral lateral view, our simplified manipulation yields a reproducibly accurate orientation on the pelvic outlet and inlet views.LEVEL OF EVIDENCETherapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142324959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thomas M Zink,Alexis G Gonzalez,Gloria Coden,Eric L Smith,James V Bono
{"title":"Outcomes of Total Knee Arthroplasty Following a Sham Incision Procedure in Patients with Previous Knee Incisions.","authors":"Thomas M Zink,Alexis G Gonzalez,Gloria Coden,Eric L Smith,James V Bono","doi":"10.2106/jbjs.24.00114","DOIUrl":"https://doi.org/10.2106/jbjs.24.00114","url":null,"abstract":"BACKGROUNDTenuous blood supply carries a risk of wound-healing problems and subsequent infection following total knee arthroplasty (TKA). This risk may be increased by the presence of previous incisions. Performing a sham incision procedure allows for detection of wound-healing problems prior to performing TKA. The purpose of this retrospective case series is to describe the indications for and technique of a sham incision procedure in patients with previous knee incisions who underwent TKA following this procedure and to report the clinical outcomes observed in these patients following further surgery.METHODSPatients who had prior knee incisions, had undergone a sham incision prior to TKA, and had a minimum follow-up of 2 years were identified, and their cases were retrospectively reviewed. The identified cases typically adhered to the surgeon's standard protocol, which consisted of making a midline incision adventitious to TKA, dissecting down to deep fascia, and closing the wound with suture. Incisions were then observed for at least 4 weeks to determine the viability of the skin flaps before TKA was performed via the same incision.RESULTSA total of 47 knees in 47 patients were included in the study cohort. TKA was performed at an average of 21.1 weeks (range, 4 to 163 weeks) following the sham incision. There were no cases of skin necrosis or periprosthetic joint infection at an average follow-up of 4.6 years (range, 2 to 12 years) after sham incision. A total of 11 patients (23.4%) required manipulation under anesthesia for stiffness.CONCLUSIONSIn our series, no patients developed skin necrosis or periprosthetic joint infection following TKA subsequent to a sham incision procedure, suggesting that healed sham incisions are safe to use for TKA and may be considered prior to TKA in cases in which local previous incisions increase the risk of wound-healing problems.LEVEL OF EVIDENCEPrognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.","PeriodicalId":22625,"journal":{"name":"The Journal of Bone & Joint Surgery","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142324962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}