Foot & ankle specialistPub Date : 2024-06-01Epub Date: 2021-11-02DOI: 10.1177/19386400211053946
Daniel Chiou, Brandon Morris, Gregory Waryasz
{"title":"Bröstrom Repair Review.","authors":"Daniel Chiou, Brandon Morris, Gregory Waryasz","doi":"10.1177/19386400211053946","DOIUrl":"10.1177/19386400211053946","url":null,"abstract":"<p><p>Since its introduction in 1966, the Bröstrom repair has been the workhorse for the treatment of chronic ankle instability. The procedure has expanded with the advent of arthroscopy, ultrasound, and other techniques. Because chronic ankle sprains/instability pose a barrier to athletes who perform high-level activities for a living, discussions concerning postoperative recovery and return to play criteria are important. Here we present an update on the Bröstrom-Gould procedure from preoperative management to return to play.<b>Level of Evidence:</b> Level V.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"277-283"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39581911","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}
Foot & ankle specialistPub Date : 2024-06-01Epub Date: 2021-11-28DOI: 10.1177/19386400211058264
Eric So, Jonathan Lee, Michelle L Pershing, Anson K Chu, Matthew Wilson, Chandana Halaharvi, Vincent Mandas, Christopher F Hyer
{"title":"A Comparison of Complications and Reoperations Between Open Reduction and Internal Fixation Versus Primary Arthrodesis Following Lisfranc Injury.","authors":"Eric So, Jonathan Lee, Michelle L Pershing, Anson K Chu, Matthew Wilson, Chandana Halaharvi, Vincent Mandas, Christopher F Hyer","doi":"10.1177/19386400211058264","DOIUrl":"10.1177/19386400211058264","url":null,"abstract":"<p><p>There is a lack of consensus in the literature regarding optimal treatment methods for Lisfranc injuries, and recent literature has emphasized the need to compare open reduction and internal fixation (ORIF) with primary arthrodesis (PA). The purpose of the current study is to compare reoperation and complication rates between ORIF and PA following Lisfranc injury in a private, outpatient, orthopaedic practice. A retrospective chart review was performed on patients undergoing operative intervention for Lisfranc injury between January 2009 and September 2015. A total of 196 patients met the inclusion criteria (130 ORIF, 66 PA), with a mean follow-up of 61.3 and 81.7 weeks, respectively. The ORIF group had a higher reoperation rate than the PA group, due to hardware removal. When hardware removals were excluded, the reoperation rate was similar. Postsurgical complications were compared between the 2 groups with no significant difference. In conclusion, ORIF and PA had similar complication rates. When hardware removals were excluded, the reoperation rates were similar, although hardware removals were more common in the ORIF group compared with the PA group.<b>Levels of Evidence:</b> <i>Level III</i>.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"194-200"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39942063","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}
Foot & ankle specialistPub Date : 2024-06-01Epub Date: 2022-07-11DOI: 10.1177/19386400221107003
Marcus Wei Ping Tan, Kae Sian Tay, Eng Meng Nicholas Yeo
{"title":"Atelocollagen-Induced Chondrogenesis Versus Microfracture Alone for Osteochondral Lesions of the Talus: Surgical Technique and a 1-Year Clinical Outcome Study.","authors":"Marcus Wei Ping Tan, Kae Sian Tay, Eng Meng Nicholas Yeo","doi":"10.1177/19386400221107003","DOIUrl":"10.1177/19386400221107003","url":null,"abstract":"<p><p>Osteochondral lesions of the talus (OLTs) are a common cause of post-traumatic ankle pain and disability. Atelocollagen-induced chondrogenesis (ACIC) aims to encourage the development of hyaline cartilage, which is biomechanically superior to fibrocartilage. This single-center, retrospective database study assessed patients who underwent arthroscopic microfracture with or without atelocollagen scaffold augmentation for OLT. Between 2010 and 2019, 87 patients underwent microfracture only and 31 patients underwent ACIC. Propensity score matching was used to match the ACIC group in a 1:2 ratio to a corresponding microfracture-only group using logistic regression. American Orthopaedic Foot & Ankle Society (AOFAS) scores, 100-mm Visual Analog Scale (VAS), Short Form-36 (SF-36), and satisfaction were assessed at preoperative, 3-, 6-, and 12-month intervals. There were no differences in baseline characteristics between groups after matching (P > .05). Both groups had similar improvements to VAS, AOFAS, and SF-36 scores up to 12 months (P > .05). Both groups had significant 1-year improvements to physical functioning, physical limitations in usual role activities, pain, and social functioning domains, but the ACIC group additionally had significant improvements to general health, vitality, and mental health. Patients in the ACIC group were also more satisfied than the microfracture group at all time points. Patients with OLTs who underwent ACIC reported superior satisfaction and improvements to quality of life, although clinical outcomes were similar to those who underwent microfracture alone at 1 year.<b>Level of Evidence:</b> Level III: Cohort study.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"224-234"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40580769","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}
Foot & ankle specialistPub Date : 2024-06-01Epub Date: 2022-01-07DOI: 10.1177/19386400211068239
Ezra Goodrich, Bryan Vopat, Ashley Herda
{"title":"Treatment of Chronic Ankle Instability in the Military Population: A Systematic Review.","authors":"Ezra Goodrich, Bryan Vopat, Ashley Herda","doi":"10.1177/19386400211068239","DOIUrl":"10.1177/19386400211068239","url":null,"abstract":"<p><strong>Background: </strong>The high incidence of ankle sprain within the military sets the stage for prevalent chronic ankle instability. The purpose of this review was to compare and evaluate chronic ankle instability treatment strategies in the military population.</p><p><strong>Methods: </strong>Electronic databases were systematically searched in accordance with the Preferred Reporting Items for Systematic Reviews guidelines for English-language, human studies with a military patient population that had been diagnosed with and treated for chronic ankle instability. Exclusion criteria were animal, cadaver, and review studies and case reports.</p><p><strong>Results: </strong>Eight studies met the inclusion criteria, representing 695 military service members-625 males (89.9%) and 70 females (10.1%)-and 4 treatment strategies: Broström-related procedures, modified Watson-Jones procedure, Colville's technique, and anatomic lateral ligament reconstruction using semitendinosus tendon allograft. The percentage of satisfactory outcomes was 100% for Colville's technique, and ranged from 73.2% to 94.7% for Broström-related procedures and 72% to 80% for the modified Watson-Jones procedure. Mean American Orthopaedic Foot and Ankle Society scores, anterior drawer displacement, talar tilt, and visual analogue scale scores were also reported.</p><p><strong>Conclusion: </strong>This review demonstrates that the Bröstrom procedure has consistently satisfactory outcomes within the military population, and Colville's technique is another promising option for this patient population but would require additional studies to support this claim.</p><p><strong>Levels of evidence: </strong>Level IV.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"208-215"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39652101","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":"Comparative Study for Surgical Treatment of Acute Distal Tibiofibular Syndesmotic Lesions Using the Modified Suture-Button Fixation Versus Static Syndesmotic Screw Fixation.","authors":"Mohamed Jlidi, Walid Bouaicha, Siwar Sbaihi, Hedi Gharbi, Mouldi Lamouchi, Karim Mallek, Salma Jaziri, Selim Daas","doi":"10.1177/19386400241256440","DOIUrl":"https://doi.org/10.1177/19386400241256440","url":null,"abstract":"<p><strong>Introduction: </strong>Several techniques to treat acute distal tibiofibular instability are described consisting in static and dynamic fixation procedures. The aim of our work is to compare the outcomes of acute syndesmotic injury fixation between the modified technique of dynamic fixation using the suture-button principle as an efficient and low-cost method and the classic static fixation.</p><p><strong>Methods: </strong>It is a prospective study including patients presenting with acute syndesmotic injury. After fracture fixation, residual syndesmotic instability was managed using syndesmotic screw in group A and dynamic fixation with a double Ethibond suture in group B. Functional results were assessed using the American Orthopaedic Foot and Ankle Society score (AOFAS) score. Radiological evaluation was done by a postoperative computed tomography (CT) scan of both ankles and plain X-rays of the ankle after surgery and at 18 months.</p><p><strong>Results: </strong>Group A included 20 patients meanwhile 35 patients were in group B. The reduction was satisfactory in the 2 groups according to the postoperative CT scan measurements. The mean healing time in group A was 49.65 days and 51.49 days in group B (P = .45). We did not find any significant difference in terms of loss of reduction in the 2 groups. The return to work was faster in group B (P = .04). Patients in group B had better AOFAS score (P = .03) and ankle range of motion than those in group A. The difference was statistically significant (P = .02 for dorsal flexion and P = .001 for plantar flexion). For group A, we did not note any early complications. Meanwhile, 7 patients developed skin complications in group B (P = .03). However, no significant difference was found in terms of late complications.</p><p><strong>Conclusions: </strong>The modified dynamic suture-button fixation remains a therapeutic alternative in low-income countries that could achieve better outcomes than static fixation, with easy postoperative follow-up.</p><p><strong>Levels of evidence: </strong><i>Level II</i>.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241256440"},"PeriodicalIF":0.0,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141175982","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":"Inconsistency in the Reporting Terminology of Adverse Events and Complications in Hallux Valgus Reconstruction: A Systematic Review.","authors":"Abdulmohsen AlMeshari, Yasir AlShehri, Lindsay Anderson, Madeleine Willegger, Alastair Younger, Andrea Veljkovic","doi":"10.1177/19386400241256215","DOIUrl":"https://doi.org/10.1177/19386400241256215","url":null,"abstract":"<p><p>Surgical complications are inevitable in any surgical subspecialty. Throughout the years, many classification systems have been developed to better understand and report such complications. The aim of this systematic review is to investigate the variability and frequency of reporting terms used to describe adverse events and complications in hallux valgus reconstruction. We hypothesized that the terms used would be highly inconsistent, which further promotes a need for a standardized terminology reporting system. Studies related to hallux valgus reconstruction outcomes that met our predetermined inclusion criteria were investigated to identify and report the related adverse terms and complications. Adverse terms and complications were grouped into 9 categories. Of the 142 studies included, 376 distinct terms that described adverse events or complications related to hallux valgus reconstruction were identified. Of these, 73.4% (276/376) were mentioned only once in their respective studies. Five of 376 terms were mentioned in at least 25% of the papers, and only 2 of 376 were mentioned in at least 50%. The most frequently reported adverse events were \"Recurrence,\" mentioned in 77 of 142 studies (54%), followed by \"Nonunion,\" mentioned in 76 of 142 studies (53%). The most reported category was \"Bone/Joint\" with 135 related terms, mentioned in 135 of 376 of the papers (95.1%). The terminology used in reporting adverse events and complications in surgical hallux valgus correction was highly inconsistent and variable. This represents yet another barrier in accurate reporting of these terms, and subsequently a difficult analysis of the outcomes related to hallux valgus reconstruction. To overcome these challenges, we suggest developing a standardized terminology reporting system.<b>Levels of Evidence:</b> <i>Level III; systematic review of Level III studies and above</i>.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241256215"},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141089408","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":"Painful Peroneal Tendon Subluxation in a Patient With a Prior Ankle Fusion.","authors":"Richard A Zell, Ananya Mehta","doi":"10.1177/19386400241251908","DOIUrl":"https://doi.org/10.1177/19386400241251908","url":null,"abstract":"<p><p>This case report describes a patient who underwent an ankle fusion using a lateral approach and fibular-onlay strut 14 years ago. She presented with increasing lateral ankle pain and giving way. Despite bracing and steroid injections, she had continued symptoms and surgery for hardware removal was recommended. While under anesthesia, she was found to have subluxation of her peroneal tendons. Operative findings included impingement of the peroneal brevis on the screw head from her fibular-onlay strut and a peroneal tendon tear. Hardware removal, a peroneal tenodesis, and reconstruction of the peroneal retinaculum were performed with a good clinical result.<b>Level of Evidence:</b> V (case report).</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241251908"},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141072460","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}
Carl Brandon Lindberg, Rishika Lagisetti, Amol Saxena
{"title":"Limb Salvage by Means of Hindfoot Arthrodesis Utilizing Bulk Allograft and External Fixation.","authors":"Carl Brandon Lindberg, Rishika Lagisetti, Amol Saxena","doi":"10.1177/19386400241251519","DOIUrl":"https://doi.org/10.1177/19386400241251519","url":null,"abstract":"<p><strong>Format: </strong>Retrospective Review.</p><p><strong>Length of follow-up: </strong>18 months.</p><p><strong>Classification: </strong>Rearfoot and Ankle Reconstruction.</p><p><strong>Methodology: </strong>Level 4 Retrospective Review.</p><p><strong>Procedures: </strong>A retrospective review was performed of 6 patients who had undergone limb salvage procedures between January 2016 and April 2019. Patients underwent surgery due to severe limb-threatening diagnosis including Charcot and/or osteomyelitis. Salvage arthrodesis was performed with bulk femoral head allograft incorporation using a hexapod external fixation system. The external fixation was retained for an average of 16 weeks. All patients were followed for a postoperative period of 16 months.</p><p><strong>Results: </strong>Successful rearfoot arthrodesis and limb salvage was achieved in ⅚ (83%) of patients.</p><p><strong>Discussion: </strong>This review demonstrates that limb salvage and arthrodesis are possible using femoral head allograft incorporation by external fixation alone. The involved patients had resolution of the osteomyelitis and Charcot deformity, salvage arthrodesis of the rearfoot and avoidance of a major limb amputation.</p><p><strong>Levels of evidence: </strong>IV.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241251519"},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140923549","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}
Parimal Rana, Jane Brennan, Andrea Johnson, Caroline Donegan, Jake Gelfand, Adrienne Spirt, David Keblish, Justin Turcotte, Elizabeth Friedmann
{"title":"Addressing Barriers to Timely Orthopaedic Follow-up for Foot and Ankle Fractures After Emergency Department Visits.","authors":"Parimal Rana, Jane Brennan, Andrea Johnson, Caroline Donegan, Jake Gelfand, Adrienne Spirt, David Keblish, Justin Turcotte, Elizabeth Friedmann","doi":"10.1177/19386400241249807","DOIUrl":"https://doi.org/10.1177/19386400241249807","url":null,"abstract":"<p><strong>Introduction: </strong>Foot and ankle fractures present common challenges in emergency departments, warranting careful follow-up protocols for optimal patient outcomes. This study investigates the predictors of orthopaedic follow-up for these injuries after an emergency department (ED) visit.</p><p><strong>Methods: </strong>A retrospective observational study of 1450 patients seen in the ED with foot or ankle fractures from July 2015 to February 2023 was conducted. All included patients were discharged with instructions to follow-up with an orthopaedic provider. Demographic data, fracture details, and follow-up patterns were extracted from medical records. Social vulnerability was assessed using the Centers for Disease Control (CDC) Social Vulnerability Index. Univariate and multivariate analyses were performed to identify predictors of follow-up. A subgroup analysis comparing patients who followed up >7 days from ED presentation (ie, delayed follow-up) to those who followed up within 7 days of presentation was then performed. Statistical significance was assessed at P < .05.</p><p><strong>Results: </strong>Overall, 974/1450 (67.2%) patients followed up with orthopaedics at an average time of 4.16 days. After risk adjustment, Medicaid coverage (odds ratio [OR] = 0.56, P = .018), increased overall social vulnerability (OR = 0.83, P = .032), and increased vulnerability across the dimensions of socioeconomic status (P = .002), household characteristics (P = .034), racial and ethnic minority status (P = .007), and household type and transportation (P = .032) were all associated with lower odds of follow-up. Phalangeal fractures were also associated with decreased odds of follow-up (OR = 0.039, P < .001), whereas ankle fractures were more likely to follow-up (OR = 1.52, P = .002). In the subgroup analysis, patients of older age (P = .008), non-white race (P = .024), motor vehicle accident (MVA) (P = .027) or non-private insurance (P = .027), those experiencing phalangeal fractures (P = .015), and those seen by an orthopaedic provider in the ED (P = .006) were more likely to present with delayed follow-up.</p><p><strong>Conclusion: </strong>Patients with increased social vulnerability and Medicaid insurance are less likely to seek follow-up care after presentation to the ED with foot and ankle fractures.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241249807"},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900723","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}
Daniel T DeGenova, Zachary P Hill, Adam D Hoffman, Avery R Taylor, Boston Dues, Mallory Faherty, Benjamin C Taylor
{"title":"Does the Subtalar or Tibiotalar Joint Need Fused in Primary Retrograde Tibiotalocalcaneal Nailing for Fragility Ankle Fractures?","authors":"Daniel T DeGenova, Zachary P Hill, Adam D Hoffman, Avery R Taylor, Boston Dues, Mallory Faherty, Benjamin C Taylor","doi":"10.1177/19386400241249583","DOIUrl":"https://doi.org/10.1177/19386400241249583","url":null,"abstract":"<p><strong>Background: </strong>As an alternative to traditional open reduction internal fixation of ankle fragility fractures, primary retrograde tibiotalocalcaneal (TTC) nailing has been investigated as a treatment option. These results suggest that this treatment is an acceptable alternative treatment option for these injuries. There are still questions about the need for formal joint preparation at the subtalar or tibiotalar joint when performing primary TTC nailing for fragility fractures.</p><p><strong>Methods: </strong>In this study, we retrospectively evaluated 32 patients treated with primary retrograde TTC nail without subtalar or tibiotalar joint preparation for a mean of 2.4 years postoperatively. We specifically reviewed the charts for nail breakages at either joint, patients developing subtalar or tibiotalar joint pathology requiring additional treatment, including return to the operating room for formal joint preparation.</p><p><strong>Results: </strong>Fracture union occurred in 100% of patients. There were 3 cases (10.0%) of hardware failure, and 2 of these cases were asymptomatic and did not require any treatment. One patient (3.3%) developed hardware failure with nail breakage at the subtalar joint. This patient developed progressive pain and symptoms requiring revision surgery with formal arthrodesis of the subtalar and tibiotalar joint.</p><p><strong>Conclusions: </strong>This study shows that retrograde hindfoot nailing without formal subtalar or tibiotalar joint preparation is an acceptable potential treatment option in ankle fragility fractures. Mid-term follow-up demonstrates favorable outcomes without the need for formal joint preparation in this high-risk population. Comparative studies with higher patient numbers and long-term follow-up are needed to confirm the results of this study.<b>Levels of Evidence:</b> Level IV.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241249583"},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900726","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}