Foot & ankle specialist最新文献

{"title":"Pickleball and the Rising Incidence of Achilles Tendon Injuries in the Elderly.","authors":"Joseph A S McCahon, Mark Miller, Samantha Riebesell, David I Pedowitz, Selene G Parekh, Joseph N Daniel","doi":"10.1177/19386400241286591","DOIUrl":"https://doi.org/10.1177/19386400241286591","url":null,"abstract":"<p><strong>Background: </strong>With its rising popularity of pickleball, particularly in the aging population, comes concern for potential injuries that previously rarely affected this patient cohort. The purpose of this study was to investigate the trends of pickleball-related Achilles tendon injuries.</p><p><strong>Methods: </strong>A retrospective case series was performed to determine the trends associated with pickleball-related Achilles tendon injuries over the last 10 years. A database search of all Achilles tendon ruptures (ICD-10 S86.0) presenting to a large, multistate, subspecialty referral orthopaedic clinic between January 2013 and June 2023 were identified and included in the study. Pickleball-related injuries were identified via query and confirmed with manual chart review. The incidence of pickleball-related injuries, as well as patient demographics and rate of surgery was determined and compared with the total population during that time period.</p><p><strong>Results: </strong>A total of 2684 patients who suffered an Achilles tendon injury between January 2013 and June 2023 were identified, with 43 patients meeting the inclusion criteria for pickleball-related Achilles tendon ruptures. The number and overall incidence of pickleball-related Achilles tendon injuries has been increasing since 2016, excluding 2020 where there was a large decrease likely due to the COVID-19 epidemic. Pickleball was associated with older age at time of injury (64.5 vs 48.6, P < .001) as well as a lower BMI (26.6 vs 29.4, P < .001). In addition, patients who sustained a pickleball-related Achilles tendon injury were more likely to undergo surgery (67.4% vs 45.4%, P = .008).</p><p><strong>Conclusion: </strong>The rising popularity of pickleball and its associated injuries poses a significant risk to the aging population, with Achilles tendon injuries occurring in older individuals and resulting in a higher likelihood of undergoing surgery.</p><p><strong>Level of evidence: </strong><i>IV; retrospective case-series</i>.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241286591"},"PeriodicalIF":0.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142395723","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":"Opioid Prescribing Trends Among Workers' Compensation Patients Undergoing Foot and Ankle Surgery.","authors":"Tyler M Goodwin, Daniel T Miles, Richard D Murray, Andrew W Wilson, Jesse F Doty","doi":"10.1177/19386400241286594","DOIUrl":"https://doi.org/10.1177/19386400241286594","url":null,"abstract":"<p><strong>Background: </strong>The purpose of this study was to evaluate opioid usage and prescribing trends among workers' compensation (WC) patients who underwent foot or ankle operative procedures compared with a control group.</p><p><strong>Methods: </strong>A retrospective review was conducted for WC and non-WC patients who underwent foot or ankle procedures in a single academic orthopaedic surgery practice. Outcome measures were total morphine milligram equivalents (MME) and number of opioid prescriptions.</p><p><strong>Results: </strong>A total of 118 patients were identified, including 51 patients in the WC group and 67 in the non-WC group. After index surgery, 67% (34 of 51) of WC patients had 2 or more additional opioid prescriptions compared to 39% (26 of 67) of non-WC patients (odds ratio [OR], 3.1; 95% confidence interval [CI], 1.4-6.7; P = .003). Collectively, there were greater prescriptions of oxycodone MME (P = .002) and hydrocodone MME (P = .07) in the WC cohort.</p><p><strong>Conclusions: </strong>Workers' compensation patients seem to be prescribed and consume opioids at a higher rate postoperatively. It is important for treating physicians to be aware of these trends, and discussions with patients regarding expected opioid use when planning surgical intervention may be beneficial. Physicians may need to set expectations preoperatively and suggest there are limits on the amount of opioids that can safely be prescribed.</p><p><strong>Level of evidence: </strong><i>Level III, Retrospective cohort study, Prognostic</i>.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241286594"},"PeriodicalIF":0.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397002","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":"Timing of Fracture Fixation in Ankle Fracture-Dislocations.","authors":"Diederick Penning, Jasper Tausendfreund, M Azad Naryapragi, Kostan W Reisinger, Pieter Joosse, Erik Tanis, Tim Schepers","doi":"10.1177/19386400241273105","DOIUrl":"10.1177/19386400241273105","url":null,"abstract":"<p><p>Ankle fracture-dislocations may require delayed internal fixation. Our aim was to compare acute open reduction and internal fixation (ORIF) with delayed ORIF, using external fixation or cast splint in ankle fracture-dislocations. Factors that affect the rates of re-operation and Surgical site infection (SSI) were identified. In this retrospective cohort study, patients were included with open and closed ankle fracture-dislocations treated with ORIF from two large peripheral hospitals and one academic center in the Netherlands. This study included 447 patients with an ankle fracture-dislocation. In the multivariate analysis, the difference between surgery <48 hours compared to bridging with cast or external fixation had no significant influence on unscheduled re-operation or SSI. Higher body mass index (BMI) and open fractures had a significant positive correlation with re-operation while diabetes mellitus (DM) and open fractures correlated with SSI. In patients with open fractures, there was also no significant difference in outcome between acute or delayed internal fixation. We suggest that it is safe to perform primary ORIF on all dislocated ankle fractures if the soft tissue injury allows surgery within 48 hours. When significant swelling is present, patients with well-reduced fractures and with no soft tissue injury could be treated safely with a cast until delayed ORIF is possible.<b>Level of Evidence:</b> <i>Therapeutic level 2B (retrospective cohort study)</i>.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241273105"},"PeriodicalIF":0.0,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142378665","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":"Effects of Parallax and Distortion in Total Ankle Arthroplasty.","authors":"Joseph R Brown, Zachary P Hill, Ross Groeschl, Brian Steginsky, Robert W Mendicino","doi":"10.1177/19386400241274262","DOIUrl":"https://doi.org/10.1177/19386400241274262","url":null,"abstract":"<p><strong>Background: </strong>Surgeons rely on intraoperative fluoroscopy to assist in placement of implant components during total ankle arthroplasty (TAA). Parallax alters the direction of an object when viewed from two different points, resulting in image distortion. The purpose of this study was to evaluate parallax/distortion in intraoperative fluoroscopic images during TAA.</p><p><strong>Methods: </strong>A retrospective review of all TAAs performed by two surgeons (R.W.M. and B.S.) from August 2019 to April 2023 were reviewed. Intraoperative fluoroscopic anteroposterior (AP) ankle views were evaluated for any obvious parallax image distortion. Cases with obvious parallax distortion were included for angular evaluation of AP intraoperative fluoroscopic and first postoperative plain films. The tibia was marked at 2-centimeter intervals to create zones from the proximal stem of the implant. The anatomical axis of the tibia (AAT) was drawn at the mid-diaphysis. The anatomic lateral distal tibial angle (aLDTA) and anatomic axis deviation (AAD) were measured for each zone.</p><p><strong>Results: </strong>A total of 22 TAAs were performed during the study period. Four cases were excluded due to inadequate imaging, leaving a total of 18 TAAs for review. We found 6 of 18 (33.3%) cases had obvious parallax distortion. We found the average aLDTA was 90.9° (84°-101°). At the most proximal tibial zone, the average aLDTA was 94° (91°-101°). We found the average AAD was 4.7 (0.5-17.2) mm. The AAD ranged from 0.5 to 17.2 mm lateral to 0.8 to 8.2 mm medial. Postoperative plain film radiographs displayed a normal aLDTA and an AAT centered within the ankle joint.</p><p><strong>Conclusion: </strong>Parallax can distort the appearance of the tibia on fluoroscopic images. Deviation from the normal aLDTA and anatomical axis should be anticipated. Surgeons should be aware of the potential impact of parallax and ways to mitigate these effects.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241274262"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142373695","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":"Effects of Pilates Exercise Training on Static Balance and Lower Limbs Proprioception in Adult Females With and Without Flexible Flatfeet.","authors":"Maryam Ghorbani, Rasoul Yaali, Hassan Sadeghi, Urs Granacher","doi":"10.1177/19386400241279930","DOIUrl":"https://doi.org/10.1177/19386400241279930","url":null,"abstract":"<p><strong>Background: </strong>It is well known that flatfeet are associated with a higher incidence of lower limb injuries in different populations. Thus, we examine how Pilates exercise training affects static balance and ankle and knee proprioception in females with and without flexible flatfeet. Study Design. Case series; Level of evidence.</p><p><strong>Methods: </strong>This quasi-experimental study involves 91 healthy 18- to 25-year-old female university students. The Navicular Drop Test was used to diagnose flatfeet. Pilates included core strength, balance, and flexibility exercises for 16 weeks. Static balance was assessed using the sharpened Romberg test and ankle and knee joint proprioception were measured using joint position reproduction tests. The Wilcoxon test indicated within-group pre-post improvements in static balance, and ankle and knee joint proprioception in the Pilates and the healthy control group (P < .05).</p><p><strong>Results: </strong>The between-group comparisons at post-test showed significant differences for joint position reproduction test of the dorsiflexion (P < .05, η² = 0.10) and the plantarflexion (P < 0.05, η² = 0.08) in favor of the healthy controls group. Joint proprioception of ankle and knee was positively correlated with increasing static balance in the healthy control group.</p><p><strong>Conclusion: </strong>The results showed that Pilates has the potential to improve static balance, and ankle and knee proprioception. However, it did not improve postural control and proprioception in individuals with flatfeet. Our findings advise combining Pilates with other interventions to develop flexible flatfeet in females.</p><p><strong>Levels of evidence: </strong>Level I.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241279930"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142333762","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":"Traumatic Periprosthetic Fractures Following Total Ankle Replacement A Systematic Review and Proposed Classification.","authors":"Zachary P Hill, Joseph R Brown, Daniel DeGenova, Benjamin C Taylor, Robert Mendicino, Isaac Korb","doi":"10.1177/19386400241280357","DOIUrl":"https://doi.org/10.1177/19386400241280357","url":null,"abstract":"<p><p>Total ankle replacements (TAR) are increasingly utilized, but postoperative traumatic periprosthetic fractures remain a rare yet challenging complication. This systematic review aims to address the gap in literature by proposing a comprehensive classification system for these fractures, considering implant stability, fracture location, and surrounding bone quality. A systematic review identified 13 cases from 9 studies meeting inclusion criteria. Fractures were categorized using the proposed Hill-Brown classification: Type A (talus or fibula), Type B (distal tibial component), and Type C (diaphysis/proximal tibial metaphysis). Implant stability was a key factor, with Type B fractures further classified as B1 (stable), B2 (unstable with adequate bone stock), and B3 (unstable with poor bone stock). Most fractures occurred at or near the distal tibial component (Type B), with implant stability largely dependent on fracture location and bone quality. Surgical fixation, particularly minimally invasive plate osteosynthesis (MIPO) with locking plates, was the preferred treatment for stable implants, showing low complication rates. Unstable implants often required revision TAR or conversion to arthrodesis. Surgical intervention is recommended following all traumatic periprosthetic fractures in the setting of a TAR. Bone quality, particularly in patients with rheumatoid arthritis or osteoporosis, significantly impacted treatment decisions. Our findings emphasize the importance of fracture location, implant stability, and bone quality in managing these fractures. Future multicenter studies are necessary to validate this classification system and refine treatment protocols.<b>Level of Evidence:</b> Level III.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241280357"},"PeriodicalIF":0.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142302492","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":"Exploring Revision Total Ankle Arthroplasty Failures A Comparison Between Failed and Successful Revision Cases.","authors":"Kevin A Wu, Albert T Anastasio, James K DeOrio, James A Nunley, Mark E Easley, Samuel B Adams","doi":"10.1177/19386400241274551","DOIUrl":"https://doi.org/10.1177/19386400241274551","url":null,"abstract":"<p><p>This study assesses the comorbidities that are associated with failed revision total ankle arthroplasty (TAA) and explores the outcomes following a failed revision TAA. A retrospective analysis was conducted on a cohort of patients who underwent a revision TAA at a single institution from 2008 to 2022. Patients were identified as having revision failure if they required explantation, below-knee amputation (BKA), or a revision of either metal component. Statistical analysis was performed to identify any significant differences and summarize outcomes. The study included a total of 87 patients who underwent revision TAA with 12 patients who subsequently experienced revision failure. The revision TAA failure rate was 13.8%. There were higher rates of former smokers (58.3%; n = 7) and a history of diabetes (33.3%; n = 4) in the failure cohort, although these differences did not reach statistical significance. Limb salvage procedures were achieved in 11 cases (91.7%). Approaches for failed revision TAAs included arthrodesis (n = 5) with 2 isolated ankle arthrodesis (AA) and 3 tibio-talo-calcaneal (TTC) arthrodesis, an additional revision arthroplasty (n = 6), or amputation (n = 1). Ankle arthroplasty retention was successful in 6 cases (50.0%). Our results demonstrate that a second revision approach was chosen in half of the cases, underscoring its viability as a successful intervention according to patient preferences.<b>Level of Evidence:</b> III.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241274551"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142302488","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":"Navigating Ankle Fracture Surgery in the Shadow of COVID-19.","authors":"Justin P Chan, Henry Hoang, Amanda Anderson, Andrew R Hsu","doi":"10.1177/19386400241274539","DOIUrl":"https://doi.org/10.1177/19386400241274539","url":null,"abstract":"<p><strong>Background: </strong>This case control study aimed to evaluate the impact of preoperative COVID-19 diagnosis on postoperative complications in patients undergoing ankle fracture surgery using the National COVID-19 Cohort Collaborative (N3C) database. The investigation focused on the interplay between COVID-19 diagnosis timing, patient characteristics, and clinical outcomes, particularly considering the potential mechanisms by which COVID-19 may contribute to increased complications.</p><p><strong>Methods: </strong>This case control study included patients who underwent ankle fracture surgery using the N3C database. The cohort was divided into two groups: patients without COVID-19 diagnosis within 12 weeks of surgery (n = 16 806) and those with a positive COVID-19 diagnosis within 12 weeks of surgery (n = 369). Demographic factors were analyzed. Clinical outcomes encompassed deep vein thrombosis (DVT), sepsis, surgical site infection, bleeding, acute kidney injury, 30-day mortality, and 365-day mortality. Multivariate logistic regression analyses were conducted.</p><p><strong>Results: </strong>The COVID-19-positive cohort displayed a slightly higher mean age (52.95 ± 18.43 vs 51.62 ± 18.36, P = .169) and body mass index (34.88 ± 9.99 vs 33.86 ± 8.80, P = .028) compared to the negative cohort. Although some outcomes, such as DVT and sepsis, demonstrated slightly higher frequencies in the COVID-19-positive group, these differences were not statistically significant. Adjusted odds ratios (AORs) for various COVID-19 diagnosis periods were generally not significant, except for a heightened risk of 30-day all-cause mortality associated with COVID-19 positivity within 0 to 2 weeks of surgery (AOR = 6.29, P = .003).</p><p><strong>Conclusions: </strong>Preoperative COVID-19 diagnosis within 12 weeks did not exhibit a significant association with most postoperative complications. While this study did not unveil substantial COVID-19-related effects, acknowledging the broader context of the pandemic remains essential in guiding comprehensive patient care strategies.</p><p><strong>Level of evidence: </strong>Level III.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241274539"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142302490","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":"The Influence of Resilience on Outcomes After Total Ankle Arthroplasty.","authors":"Joseph A S McCahon, Joseph Massaglia, Tara G Moncman, Samantha Riebesell, Selene G Parekh, David I Pedowitz, Joseph N Daniel","doi":"10.1177/19386400241274601","DOIUrl":"https://doi.org/10.1177/19386400241274601","url":null,"abstract":"<p><strong>Background: </strong>Resiliency is the ability to recover from stressful events and has been shown to correlate with patient outcomes following certain orthopaedic procedures. The purpose of this study was to determine the relationship between resiliency and outcomes following TAA.</p><p><strong>Methods: </strong>A retrospective analysis of patients undergoing primary TAA between April 2015 and September 2022 was performed (N = 83). Data included demographics, comorbidities, complications, preoperative and postoperative visual analog scale (VAS) pain and Foot and Ankle Ability Measure (FAAM) functional scores, Brief Resilience Scale (BRS) scores, and surgical satisfaction. Patients were defined as having low resilience (LR), normal resilience (NR), or high resilience (HR) based on a BRS score of <3, 3-4.30, and >4.3, respectively.</p><p><strong>Results: </strong>High resilience patients had significantly higher postoperative FAAM ADL, Sports, and Overall scores as well as a significantly greater increase from preoperative scores compared with LR and NR patients. Low resilience patients had significantly lower FAAM Sports and Overall scores compared with normal and high resilience patients. BRS scores positively correlated with postoperative FAAM scores. We found no difference in satisfaction or VAS between the 3 cohorts. Multivariate regression analysis identified BRS scores to be an independent predictor for greater changes in FAAM scores following TAA.</p><p><strong>Conclusion: </strong>Although functional improvements following TAA are expected, patients with higher resilience at baseline are more likely to experience greater improvements in functional outcomes following surgery.</p><p><strong>Level of evidence: </strong>Level III.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241274601"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142302491","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":"Gunshot Injury With Bone Defect of the First Metatarsal Bone A Presentation of 2 Cases Treated With an Iliac Crest Structural Graft, Internal Fixation, and Bone Morphogenic Protein 2.","authors":"Elisabeth Ellingsen Husebye, Geir Stray Andreassen, Are Haukåen Stødle","doi":"10.1177/19386400241278026","DOIUrl":"https://doi.org/10.1177/19386400241278026","url":null,"abstract":"<p><p>Gunshot injuries to the foot with segmental bone defects can be challenging to treat. When the vascularity is intact and the soft tissues allows, the goal should be to reconstruct the bony defect. We present 2 cases of a gunshot injury to the foot with a defect of the first metatarsal bone. Both cases were treated, with favorable outcome, with a structural iliac crest graft, internal fixation, and bone morphogenic protein 2.<b>Level of Evidence:</b> V, cases series, technical.</p>","PeriodicalId":73046,"journal":{"name":"Foot & ankle specialist","volume":" ","pages":"19386400241278026"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142302489","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}