The 100 classic papers of pediatric orthopaedic surgery: a bibliometric analysis

The Top 100 Classical and Contemporary Papers on Elbow Surgery: A Trend Analysis of Elbow Surgery Literature

INTRODUCTION

Bibliometric analyses provide an aggregate of the most frequently cited literature in a given field. The purpose of this study was to analyze the top 100 most-cited classical and contemporary papers relating to elbow surgery to serve as a reference for surgeons and trainees for educational and research purposes.

METHODS

A search was conducted for all papers containing the term "elbow" in the categories Orthopedics, Surgery, and Sports Science in the Clarivate Web of Science. Classical papers were those published from 1980 to 2009, and contemporary papers were those published from 2010 to 2019. Articles were assessed by country of origin, authors and their credentials, parent journal, level of evidence, and topic.

RESULTS

Citation frequency ranged from 86 to 867. Among the classical group, there were more level IV papers compared with level I papers; however, the opposite was true in the contemporary group. The most common topic in the classical group was elbow anatomy and function, and the most common topic in the contemporary group was lateral epicondylitis and medial epicondylitis and associated therapies.

DISCUSSION

This bibliometric analysis serves to help guide surgeons and trainees on the highly cited articles and important topics in elbow surgery, demonstrating a shift to prospective randomized controlled trials in recent years.

LEVEL OF EVIDENCE

Level V (Systematic Review with Level V as Lowest LOE).

A Bibliometric Analysis of the 500 Most Cited Papers in Orthopaedic Oncology

BACKGROUND

Despite notable progress over time, broad insight into the scientific landscape of orthopaedic oncology is lacking. We conducted a bibliometric analysis of the 500 most cited papers in the field.

METHODS

We searched the Science Citation Index Expanded database of the Web of Science Core Collection to find the 500 most cited articles in the field.

RESULTS

Citation count ranged from 81 to 1,808. Articles were published from 1965 to 2018. Over half of all articles were published in the United States (53.6%). The 2000s was the most productive decade with 170 (34%) articles. All articles were written in English and were published across 29 journals. Female participation as first authors significantly increased from the 1960s to the 2010s (0% vs 14.6%, P = 0.0434). Similarly, female involvement as senior authors grew from the 1960s to the 2010s (0% vs 12.2%, P = 0.0607). Primary bone sarcomas were the most cited topic among articles from the 1970s to the 1980s. From studies produced in the 1990s up until the 2010s, reconstruction procedures were the most cited topic.

CONCLUSION

Trends over the years have resulted in an emphasis on a surgical technique. Notable progress has been made regarding gender diversity, yet disparities still exist.

Fifty Most-Cited Research Articles in Elbow Surgery: A Modern Reading List

Purpose

Bibliometric analysis is a common method for evaluating current trends within a scientific field. The primary aim of this study was to define and analyze the 50 most frequently cited articles in the field of elbow surgery, both of all time and those published during the 21st century.

Methods

We searched the Journal Citation Report to identify articles related to elbow surgery within academic journals. Articles were sorted by total citations. The overall top 50 articles and those published since 2000 were identified, and data were collected, including title, journal of publication, publication year, country of publication, citation density, level of evidence, article type, institution, and sex of the lead and senior authors, and inclusion on the reference list for the Orthopaedic In-Training Examination within the last 5 years. Descriptive statistics were reported, and correlation analysis was performed using Spearman test.

Results

For the most-cited elbow surgery articles, "fracture" was overall the most reported topic, whereas "lateral epicondylosis" and "fracture" were equal for those published since 2000. The United States was the most represented overall and for articles published since 2000. Women comprised 1/50 (2%) of lead authors overall, increasing to 8/50 (16%) for articles published during the 21st century. Most articles in during both periods contained level IV evidence, with level I evidence appearing infrequently (4%). Six percent of the most-cited articles of all time had appeared on the reference list of the Orthopaedic In-Training Examination within the past 5 years.

Conclusions

The top 50 most-cited elbow surgery articles often assess fracture and lateral epicondylosis, most commonly originating from the United States. Level IV retrospective series comprises over half of the articles on this list. Women remain underrepresented as authors.

Clinical Relevance

This study provides a modern reading list for upper-extremity surgeons about impactful elbow surgery articles.

The model of descriptive, diagnostic, predictive, and prescriptive analytics on 100 top-cited articles of nasopharyngeal carcinoma from 2013 to 2022: Bibliometric analysis

BACKGROUND

Nasopharyngeal carcinomas (NPCs) are prevalent in southeast Asia. There is a need to systematically review the current trend and status of NPC research. However, most bibliometric analyses have tended to focus on descriptive and diagnostic analytics rather than predictive and prescriptive analyses. Thus, it is necessary to use the model of the 4 (called the descriptive, diagnostic, predictive, and prescriptive analytics [DDPP]) to derive insights from the data. This study aimed to apply the DDPP model to classify article themes and illustrate the characteristics of NPCs; compare NPC researcher achievements across countries, institutes, departments, and authors; determine whether the mean citations of keywords can be used to predict article citations; and highlight articles that are worthy of reading.

METHODS

The Web of Science Core Collection was searched for 100 top-cited articles and reviews related to NPCs published between 2013 and 2022. As part of Microsoft Office Excel 2019, Visual Basic for Applications was used to illustrate the number of publications and scientific productivity of authors over time and to generate network/temporal heatmaps, chord/Sankey diagrams, radar/impact beam plots, and scatter/pyramid charts about collaborations among countries. The DDPP model identifies institutions, authors, and hotspots of NPC research. The category, journal, authorship, and L-index (CJAL) score was applied to evaluate individual research achievements.

RESULTS

A total of 10,564 publications were extracted from Web of Science Core Collection and screened for 100 top-cited articles and reviews related to NPCs. Despite having the highest number of publications (36%), China lags slightly behind the US in CJAL scores. CJAL was higher at Sun Yat-Sen University, Radiat Oncol department, and author Jun Ma from China. The number of article citations was significantly correlated with the number of weighted keywords (F = 1791.17; P < .0001). Six articles with significantly increasing citations over the last 4 years were recommended.

CONCLUSION

This bibliometric study utilizes the DDPP model to analyze the scientific progress of NPC over the past decade. The whole genome is a hot topic that may prove to be a promising research area in the future. A temporal heatmap may serve as a tool for providing readers with articles that are worth reading, which could lead to additional research in bibliometrics.

Changes in research quality and surgical trends at the international congress on early-onset scoliosis

PURPOSE

The founding of the International Congress for Early Onset Scoliosis (ICEOS) and first annual meeting in 2007 represented a significant milestone in advancing the care of patients with EOS. Due to the complexity and rarity of EOS, this annual conference is the premiere venue for physicians, researchers, and advanced practice providers to identify and understand the best treatments for children with EOS. This study examines the trend of various treatment modalities presented at ICEOS and the changes in research quality since its inception.

METHODS

Podium presentations from the 2007 through 2021 ICEOS annual meetings were reviewed to determine the number of study patients, use of a study group, and key features of study design. Treatment strategies being evaluated were recorded and included non-operative treatments (casting/bracing), traditional growing rods (TGR), vertical expandable prosthetic titanium rib (VEPTR), Shilla growth guidance, magnetically controlled growing rods (MCGR), and vertebral body tethering (VBT). Linear regressions were performed to analyze changes in research topic and study group utilization.

RESULTS

A total of 532 abstracts were reviewed. An average of 97.5 ± 81.3 patients were included per study with a significant increase from 42.3 ± 89.7 in 2007 to 337.6 ± 587.4 in 2021 (r² = 0.632, p < 0.001). A total of 130 (24.4%) abstracts resulted from multicenter study groups with the proportion increasing significantly from 13.0% in 2007 to 36.4% in 2021 (p = 0.039, r² = 0.289). The majority (96.2%) of study group-based projects were from either the Growing Spine Study Group (GSSG), Chest Wall and Spine Deformity Study Group (CWSDG), Children's Spine Study Group (CSSG), or the Pediatric Spine Study Group (PSSG). Additionally, a significant increase in studies utilizing patient-reported outcome measures (PROMs) was observed (r² = 0.336, p = 0.023). Significant increases in the proportion of presentations discussing MCGR (r² = 0.738, p < 0.001) and VBT (r² = 0.294, p = 0.037) as surgical treatments were observed.

CONCLUSION

The trends in EOS device implantation observed in registry studies align with the trends in research presented at ICEOS including the increased proportion of studies focusing on MCGR and VBT over the past decade. An attempt to increase the quality of research presented at ICEOS through multicenter study groups, increased patient recruitment, and utilization of PROMs has been seen since its inception.

LEVEL OF EVIDENCE

V.

Analysis of the Most Frequently Cited Articles in Hand and Wrist Surgery: A Modern Reading List

The aim of this investigation was to analyze the 50 most frequently cited articles on hand and wrist surgery of all time and those published during the 21^st century. We aimed to evaluate the article, author, and journal characteristics for these publications in order to create a modern reading list of impactful upper-extremity articles. A search of the Journal Citation Reports 2022 edition to identify journals containing possible hand or wrist-related articles was performed. Related journals were identified and then searched on the Web of Science database to identify hand and wrist articles. The top 50 most cited articles overall and the top 50 most cited articles from 2000-2021 were identified and indexed. Several bibliometric parameters, such as study type, study topic, study design, level of evidence, citation count, citation density, the institution of the lead author, the gender of lead and senior authors, and country were analyzed. For the most cited articles of all time, the number of citations ranged from 224 to 1109 with a mean of 368 citations and 15.0 citation density. Citations for the top 50 articles from 2000-2021 ranged from 153 to 950 with a mean of 233 citations and 14.5 citation density. For both groups, the most common level of evidence was level IV (33% and 27%). No correlation between journal impact factor and citation count or citation density was found. In both groups, "fracture" was the most common topic and papers were predominantly written by male authors. Frequently cited publications on hand and wrist surgery are often clinical papers that contain low levels of evidence and tend to focus on topics related to fracture care. Female authors remain underrepresented.

Citation analysis of the 100 top-cited articles on the topic of hidradenitis suppurativa since 2013 using Sankey diagrams: Bibliometric analysis

BACKGROUND

Hidradenitis suppurativa (HS) is a chronic, inflammatory and debilitating dermatosis characterized by painful nodules, sinus tracts and abscesses in apocrine gland-bearing areas that predominantly affect women worldwide. New therapeutic interventions based on the clinical manifestations of patients have recently been introduced in numerous articles. However, which countries, journals, subject categories, and articles have the ultimate influence remain unknown. This study aimed to display influential entities in 100 top-cited HS-related articles (T100HS) and investigate whether medical subject headings (i.e., MeSH terms) can be used to predict article citations.

METHODS

T100HS data were extracted from PubMed since 2013. Subject categories were classified by MeSH terms using social network analysis. Sankey diagrams were applied to highlight the top 10 influential entities in T100HS from the three aspects of publication, citations, and the composited score using the hT index. The difference in article citations across subject categories and the predictive power of MeSH terms on article citations in T100HS were examined using one-way analysis of variance and regression analysis.

RESULTS

The top three countries (the US, Italy, and Spain) accounts for 54% of the T100HS. The T100HS impact factor (IF) is 12.49 (IF = citations/100). Most articles were published in J Am Acad Dermatol (15%; IF = 18.07). Eight subject categories were used. The "methods" was the most frequent MeSH term, followed by "surgery" and "therapeutic use". Saunte et al, from Roskilde Hospital, Denmark, had 149 citations in PubMed for the most cited articles. Sankey diagrams were used to depict the network characteristics of the T100HS. Article citations did not differ by subject category (F(7, 92) = 1.97, P = .067). MeSH terms were evident in the number of article citations predicted (F(1, 98) = 129.1106; P < .001).

CONCLUSION

We achieved a breakthrough by displaying the characteristics of the T100HS network on the Sankey diagrams. MeSH terms may be used to classify articles into subject categories and predict T100HS citations. Future studies can apply the Sankey diagram to the bibliometrics of the 100 most-cited articles.

Citation analysis of the 100 top-cited articles on discectomy via endoscopy since 2011 using alluvial diagrams: bibliometric analysis

Background

Percutaneous endoscopic lumbar discectomy (PELD) is synonymous with percutaneous endoscopic transforaminal discectomy (PETD) and percutaneous endoscopic interlaminar discectomy (PEID). PEID has gained increasing recognition for its small incision, quick recovery, short hospital stay, and equivalent clinical outcome to open surgery. Numerous articles related to PEID have been published in the literature. However, which countries, journals, subject categories, and articles have ultimate influence remains unknown. The study aimed to (1) display influential entities in 100 top-cited PEID-related articles (T100PEID) on the alluvial diagram and (2) investigate whether medical subject headings (i.e., MeSH terms) can be used to predict article citations.

Methods

T100PEID data can be found since 2011 in the PubMed and Web of Science (WOS) databases. Using alluvial diagrams, citation analysis was conducted to compare the dominant entities. We used social network analysis (SNA) to classify MeSH terms and research areas extracted from PubMed and WOS. The difference in article citations across subject categories and the predictive power of MeSH terms on article citations in T100 PEID were examined using one-way analysis of variance (ANOVA) and regression analysis.

Results

A total of 81% of T100PEID is occupied by the top three countries (the US, China, and South Korea). There was an overall T100PEID impact factor of 41.3 (IF = citations/100). Articles were published in Spine (Phila Pa 1976) (23%; IF = 41.3). Six subject categories were classified using the SNA. The most cited article authored by D Scott Kreiner from Ahwatukee Sports and Spine in the US state of Phoenix had 123 citations in PubMed. The network characteristics of T100PEID are displayed on the alluvial diagram. No difference was found in article citations among subject categories (F = 0.813, p = 0.543). The most frequently occurring MeSH term was surgery. MeSH terms were evident in the prediction power of the number of article citations (F = 15.21; p < 0 .001).

Conclusion

We achieved a breakthrough by displaying the T100PEID network characteristics on the alluvial plateau. The MeSH terms can be used to classify article subject categories and predict T100PEID citations. The alluvial diagram can be applied to bibliometrics on 100 top-cited articles in future studies.

Supplementary Information

The online version contains supplementary material available at 10.1186/s40001-022-00782-0.

An Alluvial diagram was drawn to display the network characteristics of T100PEID, which is novel and modern in the literature.

The method of drawing the Alluvial demonstrated in detail with documents in supplemental digital contents can be applied to make bibliometric studies brief, concise, and powerful.

The impact beam plot (IBP) is an additional visualization introduced in this study. The online IBP was demonstrated and worthy of future similar studies to highlight the most influential articles with a glance at a picture.

The 50 Most Cited Articles in Knee Medial Collateral Ligament Injury Research

Background:

Medial collateral ligament (MCL) injury is a common orthopaedic knee injury with a plethora of published articles regarding evaluation, treatment, and outcome.

Purpose:

To perform a comprehensive bibliometric analysis of the 50 most cited articles in MCL research.

Study Design:

Cross-sectional study.

Methods:

We performed a keyword search of the Institute for Scientific Information’s Web of Knowledge database for the identification of articles published before September 2021 encompassing the MCL. The conducted search yielded 9534 articles. The results were then filtered using predetermined guidelines and criteria, and the 50 most cited articles were selected for analysis. Extracted data included title, authors, citation count, year of publication, topic, journal, article type, country of origin, and level of evidence.

Results:

The selected 50 articles ranged from 1976 to 2013. The largest proportion was classified as having level 4 evidence (n = 12; 24%). The majority of the articles were published in the decade from 2000 to 2009 (n = 17; 34%), followed by 1990 to 1999 (n = 16; 32%). The mean raw citation score per article was 133 (range, 74-422). The most popular topic discussed was surgical technique and outcome (n = 14; 28%), followed by anatomy and biomechanics (n = 13; 26%).

Conclusion:

This study provides a comprehensive and objective measure of the most cited articles on MCL research. Knowledge of the characteristics of these most influential articles improves the understanding of MCL injury and can guide discussion for future research.

Bisphosphates for Osteoporosis: A Bibliometric Analysis of the Most Cited Articles

Osteoporosis has become a major public health problem and bisphosphates treatment for osteoporosis is a rapidly developing research field. Every year, plenty of studies devoted to the treatment of osteoporosis are published, giving clinicians a new perspective on bisphosphates treatment for osteoporosis. However, the quality of the scientific papers in this area is unclear. The aim of the present study was to characterize the 100 top-cited articles regarding bisphosphates treatment for osteoporosis. This analysis provides an accessible list for practitioners of endocrinology, pharmacy, epidemiology, imaging, surgery, and scientific research to identify the most frequently cited literature and better understand the future direction.

A Bibliometric Analysis of Personal Protective Equipment and COVID-19 Researches

COVID-19, which occurred at the end of December 2019, has evolved into a global public health threat and affects every aspect of human life. COVID-19's high infectivity and mortality prompted governments and the scientific community to respond quickly to the pandemic outbreak. The application of personal protective equipment (PPE) is of great significance in overcoming the epidemic situation. Since the discovery of severe acute respiratory coronavirus 2 (SARS-CoV-2), bibliometric analysis has been widely used in many aspects of the COVID-19 epidemic. Although there are many reported studies about PPE and COVID-19, there is no study on the bibliometric analysis of these studies. The citation can be used as an indicator of the scientific influence of an article in its field. The aim of this study was to track the research trends and latest hotspots of COVID-19 in PPE by means of bibliometrics and visualization maps.

Classification and citation analysis of the 100 top-cited articles on adult spinal deformity since 2011: A bibliometric analysis

BACKGROUND

Studies of the 100 most-cited articles are reported for many subjects. However, none has analyzed the article characteristics associated with high citation frequency. This study aims to (1) graphically depict characteristics of the 100 top-cited articles addressing adult spinal deformity (ASD), (2) diagram the association between articles according to subject and major topic medical subject headings (MeSHs), and (3) investigate whether major topic MeSH correlates with article citation frequency.

METHODS

The 100 top-cited ASD publications since 2011 were retrieved using a PubMed Central search on May 6, 2020. Using titles and abstracts, eight subject categories were identified: surgery, conservative treatment, normal values in spinopelvic alignment, review, cervical alignment, classification, compensatory mechanism, and spine-hip relationship. Sankey diagrams were used to organize the information. Network analysis was performed according to article subject and major topic MeSHs. Pearson's r was used to determine whether the weighted number of citations correlates with major topic MeSHs and the number of citations.

RESULTS

The average number of citations per article was 34.8 (range, 19-156). The most represented country was USA (n = 51). The most productive and highly cited journal was Spine (Phila Pa 1976) (n = 34; average, 38.2 citations per article). The most frequent subject categories and major topic MeSHs were "surgery" (n = 53) and "scoliosis" (weighted count, 9.8), while articles with the subject "compensatory" had the highest average number of citations (64.7). The most highly cited article, by Dr. F. Schwab in 2012, had 156 citations. Network analysis revealed the relationships between these articles according to major topic MeSHs. The weighted number of citations according to major topic MeSHs correlated significantly with article citation frequency (Pearson's r, 0.57; p < 0.001).

CONCLUSION

Multiple characteristics of the 100 top-cited ASD articles are presented in diagrams to guide evidence-based clinical decision-making in ASD.

The 50 most influential papers pertaining to the Ilizarov method: A bibliometric analysis

The Ilizarov method has become a widely recognised surgical technique. A bibliometric analysis of the 50 most-cited publications relating to the Ilizarov method was carried out. Cumulative number of citations was 4,918. Mean number of citations was 98. h-index was 50. Impact factor of these journals ranged from 0.5-5.082. Our study suggests that a highly cited and influential paper likely originated from an American journal with a high impact factor and was published in the 1990s/2000s. Our compilation of the 50 most influential papers on the Ilizarov method will prove invaluable to those in training and those involved in further advancing the technique.

Bibliometric Analysis of Top 100 Systematic Reviews and Meta-analyses in Orthopaedic Literature

Aim

We performed a bibliometric analysis of top 100 systematic reviews (SR) and meta-analyses (MA) in orthopaedic literature and also evaluated articles with maximum average citation per year, which were unable to make up in the present top 100 cited list, but may have a promising future in the world of citations.

Methods

This bibliometric study was performed by searching Web of Science database according to a specific search strategy by two independent authors according to eligibility criteria of the studies. Articles with more than 100 citations were eligible for analysis and were evaluated for following parameters: number of citations, journal name, publication date and year, first author, the total number of authors, average citations per year, methodological design of the study, geographic origin and institute associated. Inter-rater reliability was evaluated using Kappa coefficient.

Results

The number of citations ranged from 1073 to 198 with a total citation count of 30,589. Inter-rater reliability came to out in the good agreement (Kappa value-0.8). There was visible up-gradation of the research from the 2000 year till today. Spine journal had the maximum articles (26) followed by Journal of Bone and Joint Surgery-America (12 articles). The topics "Spine" and "Sports Medicine" were the most frequently cited topics with 41 and 20 articles, respectively. USA has the maximum articles in the top 100 cited SR and MA. Based on the maximum average citations per year, 34 old articles were replaced in the list with the latest articles that have a bright future ahead and can be predicted to be in the top 100 cited SR and MA of Orthopaedics soon.

Conclusion

This study recognizes those articles that have contributed significantly to the growth of knowledge and influenced clinical practices in orthopaedics. We believe that this will facilitate and encourage researchers and clinicians in their future research.

Supplementary Information

The online version contains supplementary material available at 10.1007/s43465-022-00604-9.

The Top 100 Cited Articles in Osteonecrosis of the Femoral Head: A Bibliometric Analysis

BACKGROUND

The number of articles of clinical and basic research for osteonecrosis of the femoral head (ONFH) is increasing, yet, to our knowledge, there is still a lack of bibliometric analysis on ONFH articles. The purpose of this study was to identify the top 100 cited (T100) articles related to ONFH research and to analyze the characteristics and qualities of these articles.

METHODS

The T100 articles on ONFH were retrieved from the Web of Science database. The information about each article including citations, titles, authors, journals, countries, institutions, and keywords was recorded for bibliometric analysis.

RESULTS

The T100 articles related to ONFH were mainly published from 1991 to 2010 (n = 70) and were originated from 24 countries. The USA, China, and Japan were the most productive countries in this regard. The most prolific institution was the University of Pennsylvania from the USA with 6 publications and 742 citations. The most cited article was published in 1995 by Professor Steinberg ME. The five most frequently occurring keywords were "femoral head," "osteonecrosis," "core decompression," "total hip arthroplasty," and "follow up." The keywords like "bone tissue engineering" and "extracorporeal shock wave" have emerged in recent years.

CONCLUSIONS

The USA, China, and Japan contributed greatly in terms of the T100 articles. The outcomes of core decompression and total hip arthroplasty gathered the most research interests. In recent years, bone tissue engineering and extracorporeal shock wave have become new trends. However, the mechanism of ONFH is still unclear.

A seat at the table: an invitation to the SRS podium via the study group

PURPOSE

The SRS annual meeting (SRS-AM) represents the pinnacle of research in the field of spinal deformity. Spine surgery research was historically based on single-surgeon experience, but an increasing number of abstracts presented at SRS-AM are conducted by multicenter study groups, which may have improved the quality of literature available to surgeons. We sought to determine the proportion of SRS-AM podium presentations (PP) resulting from study groups over a 15-year period.

METHODS

1874 PP from the 2005-2019 SRS-AM were reviewed to determine if they resulted from a study group or multicenter collaboration. Abstracts were also classified as pediatric- or adult-focused. Pearson correlations were calculated to analyze changes in the proportion of study group or multicenter PP.

RESULTS

The number of SRS PP increased from 102 to 171 from 2005 to 2019. 381 (20.3%) PP were identified as a study group product, while 536 (28.6%) resulted from multicenter collaboration. The proportion of study group PP increased by 0.9% annually from 8.8 to 26.9% (r² = 0.44, p = 0.007), while multicenter PP increased by 1.2% annually from 11.8 to 40.9% (r² = 0.51, p = 0.003). A greater proportion of study group PP were level of evidence I or II studies compared to those not resulting from the work of study groups (53.8 vs 19.3%, p < 0.001).

CONCLUSION

SRS-AM PP resulting from research study groups and multicenter collaborations increased over threefold from 2005 to 2019. Spine surgeons are taking a more proactive approach to produce more generalizable research with higher level of evidence through multicenter study groups, allowing them to make more informed decisions to ultimately improve surgical outcomes for patients.

LEVEL OF EVIDENCE

V.

Influential Articles on Pediatric and Adolescent Anterior Cruciate Ligament Injuries: A Bibliometric Analysis

BACKGROUND

The understanding of pediatric anterior cruciate ligament (ACL) injuries and optimal treatment has evolved significantly. Influential articles have been previously evaluated using article citations to determine impact.

PURPOSE

To identify and characterize the 50 most cited and recent influential articles relating to pediatric and adolescent ACL injuries, to examine trends in publication characteristics, and to evaluate correlations of study citations with quality of evidence.

STUDY DESIGN

Cross-sectional study.

METHODS

The top 50 most cited articles on pediatric and adolescent ACL injuries were gathered using the Web of Science and Scopus online databases by averaging the number of citations from each database. Articles from recent years were also aggregated and sorted by citation density (citations/year). Publication and study characteristics were recorded. Level of evidence and methodologic quality were assessed where applicable using the modified Coleman Methodology Score (mCMS), modified Jadad scale, and Methodological Index for Non-Randomized Studies (MINORS). Spearman correlation was used to evaluate the association between citation data and level of evidence or methodologic quality scorings.

RESULTS

The top 50 cited papers had a mean of 117.5 ± 58.8 citations (range, 58.5-288.5 citations), with a mean citation density of 9.4 ± 5.4 citations per year (range, 2.9-25.8 citations/year); 80% were published in 2000 or later, and 6% were considered basic science. Articles were mainly level 4 evidence (27/42; 64.3%), and none was level 1. There were moderate, significant associations between publication year and level of evidence (r S = -0.45; P = .0030) and citation density and publication year (r S = 0.59; P < .001). Mean methodologic quality scores were as follows: mCMS, 53 ± 7.2 (range, 39-68); modified Jadad scale, 3.2 ± 1.1 (range, 2-6); and MINORS, 11.2 ± 3.2 (range, 6-20). There was a significant, strong correlation between rank of mean citations and modified Jadad scale (r S = 0.76; P < .0001), suggesting poorer score associated with more mean citations.

CONCLUSION

Influential articles on pediatric and adolescent ACL injuries were relatively recent, with a low proportion of basic science-type articles. Most of the studies had a lower evidence level and poor methodologic quality scores. Higher methodologic quality did not correlate positively with citation data.

The 50 Most Cited Articles in Meniscal Injury Research

Background:

Meniscal injuries are among the most common orthopaedic injuries, with a significant volume of published literature.

Purpose:

To perform a comprehensive bibliometric analysis that appropriately evaluates the 50 most cited articles in meniscal research.

Study Design:

Cross-sectional study.

Methods:

We performed a keyword search of the ISI Web of Knowledge database and then pared the results down to the 50 most cited articles using specific inclusion and exclusion criteria. Data extracted included title, first author, citation count, year of publication, topic, journal, article type, country of origin, and level of evidence. Correlation coefficients were calculated between publication date and citation density and between publication date and raw citation count.

Results:

The 50 most cited articles were published from 1975 to 2013. The mean number of citations was 258.24 (range, 163-926; median, 225). The majority of articles were published in The American Journal of Sports Medicine (19%), the Journal of Bone and Joint Surgery (12%), and Arthritis & Rheumatology (14%). Most articles focused on either the anatomy and biomechanics of meniscal injury or on prevention and physical rehabilitation (12 papers each).

Conclusion:

The most popular fields of meniscal research involved anatomy/biomechanics and prevention/rehabilitation, and both are areas that will likely increase the probability of an article’s being highly cited in the future. This study provided a quality selection of the most cited articles on meniscal injury and may provide a foundation for both beginner and senior clinician readers for further discussion and research.

Global Research Trends in Pediatric Trauma From 1968 to 2021: A Bibliometric Analysis

Introduction: Every year, millions of children die from preventable causes worldwide. According to World Health Organization, injuries are the leading cause of disability and death among all age groups below 60 years. Aim: This study aimed to evaluate the global research outcomes and trends, and some key bibliometric indicators in pediatric trauma. Methods: A descriptive bibliometric analysis study was designed. On June 14, 2021, an electronic search was performed in the Web of Science Core Collection database using the potential searching keywords "Pediatric AND Trauma" in the title field without any limitations. The search was performed using the Boolean search query method. The data were downloaded in plaintext and comma-separated values format. The required graphs were generated using OriginPro 2018. Furthermore, the data were transferred to HistCite™ software for bibliometric analysis. In addition, the obtained data were plotted for network visualization mapping using VOSviewer software version 1.6.15 for windows. Results: A total of 2,269 documents were included in the final analysis. The included documents were authored by 7,894 authors and published in 395 research and academic journals, mainly in the English language (n = 2,222). The main document types were articles (n = 1,276, citations = 18,244), and meeting abstracts (n = 331, citations = 19). Pediatric (n = 2,269) and trauma (n = 2,257) were the most widely used keywords. The most productive year was 2019 (n = 184, citations = 527). The most prolific author was Upperman JS (n = 29, citations = 202). The most attractive journals in pediatric trauma research were The Journal of Trauma and Acute Care Surgery (n = 290, citations = 5,199) and the Journal of Pediatric Surgery (n = 256, citations = 5,088). The most active institute was the University of California System (n = 110). The most dominant country was the United States of America (USA) (n = 1,620, citations = 22,983). The USA and Canada had the highest total link strength, 103 and 70, respectively. Conclusion: This study provides a comprehensive overview of research output in pediatric trauma. The USA continues to dominate scientific research and funding in pediatric trauma. Findings of the current study will help the researchers and clinicians to understand the recent achievements and research frontiers. Collaborative research initiative needs to be established between institutions in developed and developing countries and among researchers.

Top 100 Most Influential Manuscripts in Congenital Abdominal Pediatric Surgery: A Bibliometric Analysis

Bibliometric analysis identifies the most influential manuscripts that shape our understanding of various congenital gastrointestinal pathologies. This study sets out to analyse the 100 most cited manuscripts on congenital gastrointestinal surgery. The Thomson Reuters Web of Science database was searched for all manuscripts relevant to paediatric congenital gastrointestinal surgery. The number of citations, authorship, publication date, journal of publication, institution and country were recorded for each paper. Eigenfactor and impact factor rankings were obtained for each journal of publication. 971 eligible manuscripts were returned by the search. Within the top 100 manuscripts, the most cited paper (by Metkus et al.) investigated fetal diaphragmatic hernia and was cited 413 times. University of Indianapolis had the most publications (n=5) and Journal of Pediatric Surgery had the most citations (n=3231). The country with the most publications in top 100 were the USA (n=39). The most commonly published topics were diaphragmatic hernia (n=23), abdominal wall defect (n=20) and atresia (n=6). The most cited manuscripts include various topics with a primary focus on the aetiology, diagnosis, management and outcome of diaphragmatic hernia and abdominal wall defects. Additionally, by collecting the most influential works, this study serves to reference what makes a manuscript 'citable'.

The most influential papers in unicompartmental knee arthroplasty

Purpose

Unicompartmental knee arthroplasty (UKA) is a treatment option for anteromedial osteoarthritis of the knee. The number of UKA has been increasing constantly worldwide in recent decades. The aim of this study was to determine the most frequently cited scientific articles addressing this subject and to establish a ranking of the 50 most influential papers.

Methods

The 50 most cited articles related to UKA were searched in Web of Science® (Clarivate Analytics, Penn., USA) by the use of defined search terms. All types of scientific papers with reference to this topic were ranked according to the absolute number of citations and analyzed for the following characteristics: journal title, year of publication, number of citations, citation density, geographic origin, article type, and level of evidence.

Results

The 50 most cited articles had up to 453 citations. Most papers were published in the Journal of Bone and Joint Surgery (British volume). More than half of the articles were published in the 2000s and 2010s (n = 30). Ten countries contributed to the top 50 list, with most contributions from the UK (n = 17). Most articles could be attributed to the category of Clinical Science (n = 33), and most reported level IV studies.

Conclusion

Most of the frequently cited articles in UKA are clinical studies that have a low level of evidence. Few basic scientific studies could be identified, which suggests that most product development is done by commercial companies.

Leadership in healthcare: a bibliometric analysis of 100 most influential publications

Aim

We analysed the 100 most influential articles on leadership in healthcare via a bibliometric analysis to better understand categories and topics in leadership science and their relationship to healthcare. Leadership in healthcare is ever evolving and needs to be robust like any another profession.

Methods

A bibliometric analysis was performed. Articles were ranked by citation counts and three independent reviewers screened the abstracts for inclusion. Common themes were categorised.

Results

Citations for articles ranged from 53 to 487 and were published across 50 journals. Articles focused primarily on three leadership subjects: team building, quality improvement and healthcare delivery. Of healthcare provider groups, articles were directed to or concerning primarily: nursing, academic medicine and critical care medicine.

Conclusions

We identified gaps in healthcare leadership development literature. There is an opportunity to effectively identify areas of interest and demand for organised leadership education and training.

Top 100 cited manuscripts in aortic valve replacement: A bibliometric analysis

This bibliometric analysis aims to identify publications and highlight the key areas that have shaped modern clinical practices for aortic valve replacement (AVR). In this paper, the top 100 most cited manuscripts for AVR are analyzed. The Thomson Reuters Web of Science database was searched using the terms "aortic valve replacement," "AVR," "sAVR," "tAVR," or "TAVI." The results were ranked by citation number and the top 100 articles were further analyzed by evaluating the subject, author, journal, year of publication, institution, and country of origin. Thirty-thousand and eight hundred eligible papers were examined, with an accumulation of 81 851 citations in total and a mean citation of 819 per manuscript (ranged: 344-4180). The New England Journal of Medicine had the most manuscripts whereas Circulation had the most citations. The number of citations has also significantly increased for articles published after 2000.The most cited manuscript highlighting the management of valvular heart disease, was written by Baumgartner et al By providing the most influential references, this work serves as a comprehensive guide to topics of interest in the field of AVR.

The 100 Most Impactful Papers in Hand and Upper Extremity Surgery over the Last 25 Years: A Bibliometric Analysis of the Orthopaedic Literature

Introduction Despite growth in hand/upper extremity investigation, impactful studies have not been thoroughly identified. Previous studies have been limited in scope. This study sought to identify and characterize the most impactful orthopaedic papers in hand/upper extremity over the past 25 years.

Materials and Methods The top 1,000 hand/upper extremity orthopaedic studies published from 1992 to 2017 were identified with Web of Science. After screening for relevance in order of decreasing citation number, the top 100 articles were identified for bibliometric analysis.

Results The mean number of authors and citations were 4.51 (range, 1–21) and 169.4 (range, 105–863). Common study types included, case series (n = 52), randomized controlled trial (n = 17), and prospective cohort (n = 16), which predominantly covered topics related to shoulder (n = 34), wrist/forearm (n = 21), and hand (n = 17). Among wrist/forearm and hand studies, distal radius fractures (n = 12) and nerve-related topics (n = 10) were most frequently analyzed. Most studies were of level IV (n = 51) and level II (n = 16) evidence. Recent studies had greater impact (mean citations/year: 2011, 82.7/year vs. 1992, 16.1/year).

Conclusion Most of the 100 top orthopaedic articles in hand/upper extremity were of level IV or II evidence, retrospective, and nonrandomized. Despite an observed recent increase in level I studies, a lack of prospective, randomized trials is apparent.

The 100 Most Cited Papers About Brain Metastases

BACKGROUND

A vast amount of articles centered on brain metastases have been published.

OBJECTIVE

To present the 100 most-cited articles dedicated to brain metastasis and to accomplish a broad literature review.

METHODS

In December 2019, we performed a title-focused search using the Thomson Reuters Web of Science database to identify the most cited articles centered on brain metastatic disease. Our search query term was based on using the following algorithm: "brain metastases" OR "brain metastasis" OR "brain metastatic disease" OR "cerebral metastases" OR "cerebral metastasis" OR "cerebral metastatic disease." Afterward, we reviewed the results to certify that they were relevant to the purposes of our research protocol. The 100 most cited papers were chosen and further analyzed.

RESULTS

Our search resulted in 11,579 articles, published from 1975 until the completion of our survey. The most cited article, by Patchell et al., was published in 1990, with 1862 citations, and an average of 62.07 citations per year, whereas the last in our list, by Gaspar et al., was published in 2010, with 195 total citations, and an average of 19.50 citations per year. Countries with the highest-cited articles included the United States (75 records), followed by Canada (16 records).

CONCLUSIONS

We discovered the top 100 most-cited articles centered on brain metastasis, all of which show a potentially increased level of interest, because they are meaningful scientific reports. In addition, we reviewed the historical development and advances in brain metastasis research and relevant points of interest, alongside the relevant contributions of different authors, fields of special interest, and countries. Many of the most cited articles were written by authors whose specialty was not neurosurgery or by neurosurgeons who were supported by colleagues from other medical fields. As a consequence, many of these articles were not published in neurosurgery-dedicated journals.

The impact of the 30 most cited articles on hip arthroscopy: what is the subject matter?

The purpose of this study was to identify the 30 most cited articles on hip arthroscopy and discuss their influence on recent surgical treatment. Due to advancements in hip arthroscopy, there is a widening spectrum of diagnostic and treatment indications. The purpose of this study was to identify the 30 most cited articles on hip arthroscopy and discuss their influence on contemporary surgical treatment. The Thomson Reuters Web of Science was used to identify the 30 most cited studies on hip arthroscopy between 1900 and 2018. These 30 articles generated 6152 citations with an average of 205.07 citations per item. Number of citations ranged from 146 to 461. Twenty-five out of the 30 papers were clinical cohort studies with a level of evidence between III and IV, encompassing 4348 patients. Four studies were reviewed (one including a technical note) and one a case report. We were able to identify the 30 most cited articles in the field of hip arthroscopy. Most articles were reported in high-impact journals, but reported small sample sizes in a retrospective setting. Prospective multi-arm cohort trials or randomized clinical trials represent opportunities for future studies.

The top 100 classic papers on adolescent idiopathic scoliosis in the past 25 years: a bibliometric analysis of the orthopaedic literature

STUDY DESIGN

Bibliometric analysis.

OBJECTIVES

To identify the 100 most cited orthopedic papers in adolescent idiopathic scoliosis (AIS) over the past 25 years and characterize them by study type, topic, and country and assess study quality (design, level of evidence, and impact factor) to provide an updated account of the most impactful AIS evidence. AIS represents a three-dimensional deformity that drives a significant number of investigations. Although available evidence continues to grow, recent impactful studies pertaining to AIS have not been identified; their quality has not been thoroughly assessed.

METHODS

Web of Science was reviewed to identify the top 1000 cited AIS studies published from 1992 to 2017. Articles were organized by number of citations. Titles and abstracts were screened for inclusion/relevance, and the top 100 articles by citation count were identified, and study and publication characteristics were extracted.

RESULTS

Among the top 100 articles, 42 were cited ≥ 100 times. Mean number of authors and citations of these studies was 5.6 and 118.3, respectively. Study types were predominantly retrospective (n = 53), followed by prospective (n = 18), cross-sectional (n = 13), and systematic review/meta-analysis (n = 7). Topics covered in these studies included clinical/patient outcomes (n = 47), methodology/validation (n = 22), basic science (n = 15), radiographic analyses (n = 12), and gait/biomechanics (n = 4). Most studies originated in the United States of America (n = 65) and were published in Spine (n = 76), with 8266 total citations. Most studies were of Level III (n = 55) or Level II (n = 23) evidence. Mean impact factor was 3.47.

CONCLUSIONS

Despite recent studies' shorter time frames for impact, citations of AIS research have progressively increased during the past 25 years. The top 100 cited orthopedic studies were predominantly Level III, retrospective, nonrandomized studies, and therefore, were subject to biases. The low proportion of prospective studies (18%) reflects an area of future improvement, underscoring the need for higher-quality studies to support our practice.

LEVEL OF EVIDENCE

N/A.

Publication output of French orthopedic and trauma surgeons: Quantitative and qualitative bibliometric analysis of their scientific production in orthopedics and other medical fields

INTRODUCTION

Bibliometric analysis is being used more and more in orthopedics and traumatology. However, the quantity and quality of publications authored by French orthopedic and trauma surgeons outside their discipline have never been analyzed, nor has the change in the quality of orthopedics publications. This led us to carry out a bibliometric analysis to answer the following questions: 1) How has the quantity of scientific production by French orthopedists changed over the past 10 years? 2) How has the quality of the overall scientific production by French orthopedists changed over the past 10 years?

HYPOTHESIS

From 2008 to 2017, the production of French orthopedists has increased in quantity and quality in orthopedics and other medical fields.

MATERIAL AND METHODS

The analysis was performed by cross-referencing the list of SOFCOT (French Society for Orthopaedic Surgery and Traumatology) members with the French SIGAPS database and the InCites platform. Out of 3979 SOFCOT members, 972 (24%) had authored publications during this period and were included in the analysis. Several indicators were analyzed: number of publications; SIGAPS score (production quality) for the various Web of Science (WoS) categories; number and percentage of publications in the top 1% and top 10% (most highly cited articles worldwide).

RESULTS

The "Orthopedics" discipline was still the most prevalent with 68% of all publications identified. The "Surgery" discipline was stable, and the share of publications had increased in five other disciplines: Sports Sciences, Clinical Neurology, Emergency Medicine, Engineering-Biomedical and Material Science-Biomaterials. Of the 727 journals indexed in PubMed in which at least one author is a French orthopedic or trauma surgeon, 79 journals (11%) had at least 10 articles authored by a French orthopedists, making up 4680/6056 published articles (77%) during the study period. The highest SIGAPS score was in the "Orthopedics" discipline followed by "Surgery", and then by "Sport Sciences" with a large number of publications in the SIGAPS B category. Publications in "Orthopedics" category A and B journals increased 14% during this period. When all disciplines are pooled, the share of publications in SIGAPS A, B and C categories increased by 10% from 2008 to 2017. The largest increase in publications for categories A and B and the top 1% and 10% was in "Sports Sciences".

DISCUSSION

Over the past 10 years, French orthopedists have continued to increase their scientific production in the orthopedics field and in related fields such as Sport Sciences, Clinical Neurology and Biomedical Engineering. The quality of the scientific production of French orthopedists in their discipline and outside of it has greatly improved, as evidenced by the shift toward SIGAPS A and B journals.

LEVEL OF EVIDENCE

IV, retrospective study without control group.

Fifty top-cited classic papers in orthopaedic oncology: a bibliometric analysis

INTRODUCTION

Citation analysis has been used to evaluate the impact of papers in medicine. There has been multitude of orthopaedic oncology-related papers in literature, to our knowledge no citation analysis of orthopaedic oncology papers has been performed. We identified the 50 most-cited orthopaedic oncology papers and evaluated these papers in terms of their time of publication, source journals, countries, institutions, authors, and main topics.

MATERIALS AND METHODS

Science citation index expanded was searched in April 2018 for citations of papers published in 77 selected journals since the beginning of the database. The 50 most-cited orthopaedic oncology papers were identified and evaluated.

RESULTS

The number of citations for the top 50 papers ranged from 168 to 1162 (mean 308). These papers were published between 1957 and 2010. 1990s was the most productive decade, with 19 papers of the list. All papers were written in English and they were published in a total of 6 journals. The Journal of Bone and Joint Surgery-Am published the largest number of papers with 31, followed by Clinical Orthopaedics and Related Research with 8. The top 50 papers were created mainly from US and Japan, respectively, with 33 and 5.

CONCLUSIONS

It is difficult to define the exact impact of a single paper in the literature. In doing citation analysis, it provides us perspective in the history and progress of orthopaedic oncology.

The Growth of Poorly Cited Articles in Peer-Reviewed Orthopaedic Journals

BACKGROUND

In general, journals can be divided in three categories: subscription-model, open-access, and hybrid (that is, open-access by choice). One measure of an article's impact is the number of citations it receives after publication. Open-access publishing may make articles more widely available because there is no financial barrier to a reader seeing the full-text version. As a result, we wondered whether articles published in fully open-access journals would be more likely to be cited than articles in other kinds of journals.

QUESTIONS/PURPOSES

We assessed the yearly number and proportion of poorly cited articles published in orthopaedic journals and compared the proportion of poorly cited articles that were published in subscription-model journals with the proportion of poorly cited articles that were published in open-access and hybrid journals.

METHODS

We identified all original articles (n = 135,029) published in orthopaedic peer-reviewed journals (n = 204) that were active from 2002 to 2012 and indexed in the Scopus® citation database. For each journal, we recorded the type of access (subscription-model, open-access, or hybrid journal), their most-recent CiteScore, the number of well- and poorly cited articles per year (more than five versus five or fewer citations after publication) calculated from the date of publication until December 31, 2017 (data collection April 2018), and then calculated if the journals themselves were poorly cited per year (defined as journals that published 75% or more articles ranked as poorly cited per year). We compared the proportion of poorly cited articles in subscription-model journals with the proportion of poorly cited articles in open-access journals. Additionally, we compared these with hybrid journals.

RESULTS

In total, 48,133 (36%) articles were classified as poorly cited. The total number and proportion of poorly cited articles increased over the years, from 2121 of 7860 (27%) in 2002 to 6927 of 16,282 (43%) in 2012. The proportion of poorly cited articles in subscription-model journals increased from 226 of 395 (57%) in 2002 to 411 of 578 (71%) in 2012. The proportion of poorly cited articles in open-access journals decreased from 264 of 434 (61%) in 2002 to 296 of 801 (37%) in 2006, and then increased again to 1387 of 2259 (61%) in 2012. When we compared yearly proportions of poorly cited articles in subscription-model versus open-access journals using Mann-Whitney U tests, we only found a difference in 2012, with a higher proportion of poorly cited articles in subscription-model journals that year (median [IQR] of poorly cited article proportions for open-access, 0.61; IQR, 0.38-0.96 and subscription-model journals, 0.92; IQR, 0.54-1.0; p = 0.049). Comparisons of poorly cited articles for all three types of access showed lower proportions of poorly cited articles in hybrid journals for each year, with the lowest proportion found in 2002 (0.20; IQR, 0.09-0.67; p = 0.003).

CONCLUSIONS

We found no difference in the likelihood that an article would be cited based on whether the article appeared was published in a subscription-model journal or an open-access journal. A future study might compare open-access and paywall articles on similar topics published in the same journal or investigate the characteristics of poorly cited articles, so that researchers and editorial staffs might understand which topics are more impactful and to determine if any important work is less-well appreciated. Additionally, an article-by-article analysis will provide more insight in citation rates for articles published within hybrid journals.

LEVEL OF EVIDENCE

Level III, therapeutic study.

The 100 most influential manuscripts in robotic surgery: a bibliometric analysis

Since the first robotic assisted surgery in 1985, the number of procedures performed annually has steadily increased. Bibliometric analysis highlights the key studies that have influenced current practice in a field of interest. We use bibliometric analysis to evaluate the 100 most cited manuscripts on robotic surgery and discuss their content and influence on the evolution of the platform. The terms 'robotic surgery,' 'robot assisted surgery' and 'robot-assisted surgery' were used to search Thomson Reuters Web of Science database for full length, English language manuscripts. The top 100 cited manuscripts were analyzed by manuscript type, surgical specialty, first and last author, institution, year and journal of publication. 14,980 manuscripts were returned. Within the top 100 cited manuscripts, the majority featured urological surgery (n = 28), followed by combined results from multiple surgical subspecialties (n = 15) and colorectal surgery (n = 13). The majority of manuscripts featured case series/reports (n = 42), followed by comparative studies (n = 24). The most cited paper authored by Nelson et al. (432 citations) reviewed technological advances in the field. The year and country with the greatest number of publications were 2009 (n = 15) and the USA (n = 68). The Johns Hopkins University published the most top 100 manuscripts (n = 18). The 100 most cited manuscripts reflect the progression of robotic surgery from a basic instrument-holding platform to today's articulated instruments with 3D technology. From feasibility studies to multicenter trials, this analysis demonstrates how robotic assisted surgery has gained acceptance in urological, colorectal, general, cardiothoracic, orthopedic, maxillofacial and neuro surgery.

Top 100 Most-Cited Clinical Studies of Hip and Knee Arthroplasty: The Foundation of Practice

Total number of citations has been considered a proxy for a published study's importance within a given field. However, there are multiple pitfalls to correlating the total number of citations alone with the quality of a study. In this review, the authors aimed to identify the top 100 most-cited studies of hip and knee arthroplasty and then assess study design and quality of reporting. More than half of these studies were level IV evidence, unblinded, not randomized, and not controlled. This underscores the need for higher-quality study design to support practice. [Orthopedics. 2019; 42(2):e151-e161.].

[Half a century of ANALES DE PEDIATRÍA. Evolution of its main bibliometric indicators in the Web of Science and Scopus international databases]

PURPOSE

To analyse the coverage and main bibliometric indicators of ANALES DE PEDIATRÍA in Scopus and Science Citation Index Expanded of the Web of Science (SCIE) databases.

MATERIAL AND METHOD

The evolution of the journal production was identified according to the document types, collaboration indexes between authors and institutions, and citations, and impact indicators (number of citations, impact factor, 5-years impact factor and without self-citations, Scimago Journal Rank, quartile, h index and most cited works).

RESULTS

A total of 10,128 papers were included in Scopus (a mean of around 225 per year) and 1,861 in SCIE (a mean of around 207 per year). The index of collaboration was 4.4 for authors and 2 for institutions. There was international collaboration in 4.2% of the papers. The number of citations received in Scopus (619) exceeded the number of citations received in SCIE (385) by 234. The mean number of citations per paper was lower in SCIE (2.27 in Scopus compared to 1.5 in SCIE). The h index was 18 in Scopus and 14 in SCIE.

CONCLUSIONS

Discrepancies were observed in the indicators obtained in both databases due to the different indexation policies, coverage, and classification methods of the papers. The number of citations, the mean number of citations per work, and the h index were higher in Scopus due to the longer life of the journal in that database. There is a positive evolution of the impact factor in SCIE, of the impact factor excluding self-citations, and of the 5-year impact factor.

Citation analysis of the most influential articles on traumatic spinal cord injury

Objective: We conducted a citation analysis in order to catalog and pay tribute to the 100 most influential clinical research articles in traumatic spinal cord injury.Design: The Thomson Reuters Web of Science was searched in a two-step process without time period limitations. Review articles were excluded. In the first stage of data extraction, a Boolean query was used to identify the top 100 most cited clinical papers on traumatic spinal cord injury. One hundred and seven keywords were manually chosen and extracted from titles and abstracts. A second Boolean query used these keywords to broaden search results. The top 100 articles from this second stage search comprised the final list.Outcome Measures: For each article, measures evaluated were number of citations, average number of citations per year, time elapsed before first citation, and time elapsed until the year in which each article received its respective highest number of citations in a one-year period.Results: 119,991 articles were found in the second stage search. The top 100 most cited articles meeting inclusion criteria were identified within the first 2,104 results. Archives of Physical Medicine and Rehabilitation was the most represented journal, with 20 of the top 100 articles. The top 100 list averaged 255 citations per article. The most highly cited article was the NASCIS 2 trial by Bracken et al., cited 1500 times, which investigated the efficacy of methylprednisolone or naloxone for spinal cord injury.Conclusion: Clinical research in traumatic spinal cord injury has grown over time, expanding to encompass rehabilitation and experimental therapies in addition to acute management trials. The list may serve as an archive and reference for further studies in this field.

Basic Science Research Trends in Orthopedic Surgery: An Analysis of the Top 100 Cited Articles

BACKGROUND

Much of current clinical orthopedics traces its origin to basic science investigation of cellular and biochemical pathways, tissue engineering, and biomechanics of bone and joint physiology in animal and cadaveric models.

QUESTIONS/PURPOSES

We sought to describe research trends in highly cited basic science studies in orthopedics.

METHODS

By searching Web of Science, we identified the 100 most cited basic science orthopedics articles and focused on author position and degree (PhD, MD, or MD/PhD), topic, type of study, country, institution, and citation trends.

RESULTS

These articles were published from 1970 to 2008 (citation range, 330 to 2111), with the majority from the USA (78). While there was no correlation between years since publication and total citations, more recent articles had higher citation rates. There were 38 unique first authors represented, with Caplan, Harris, Mankin, Noyes, and Warren as primary authors or co-authors of four articles each. Twelve journals published these 100 articles, with the majority in Journal of Bone and Joint Surgery (46) and Clinical Orthopaedics and Related Research (18). Frequent topics included biomechanics (31), healing/regeneration (21), and cellular/molecular biology (13). The Hospital for Special Surgery/Cornell University (10) published the most, followed by the Hospital for Joint Diseases/New York University (6), and University of Pittsburgh (6). No difference was observed in total citations and average citation rate by author degree. Eight articles were contributed from privately owned institutions or industry, with the rest from academic hospitals.

CONCLUSION

This review may aid those seeking insight into landmark studies and future direction of basic science research in orthopedics.

Fifty top-cited spine articles from mainland China: A citation analysis

Objective To identify the 50 top-cited spine articles from mainland China and to analyze their main characteristics. Methods Web of Science was used to identify the 50 top-cited spine articles from mainland China in 27 spine-related journals. The title, year of publication, number of citations, journal, anatomic focus, subspecialty, evidence level, city, institution and author were recorded. Results The top 50 articles had 29-122 citations and were published in 11 English-language journals; most (32) were published in the 2000s. The journal Spine had the largest number of articles and The Lancet had the highest impact factor. The lumber spine was the most discussed anatomic area (18). Degenerative spine disease was the most common subspecialty topic (22). Most articles were clinical studies (29); the others were basic research (21). Level IV was the most common evidence level (17). Conclusions This list indicates the most influential articles from mainland China in the global spine research community. Identification of these articles provides insights into the trends in spine care in mainland China and the historical contributions of researchers from mainland China to the international spine research field.

The Top-100 Most-Cited Articles on Meningioma

BACKGROUND

There is an abundance of articles published on meningioma.

OBJECTIVE

To identify the 100 most-cited articles on meningioma and to perform a bibliometric analysis.

METHODS

In November 2016, we performed a title-specific search of the Scopus database using "meningioma" as our search query term without publication date restrictions. The top 100 most cited articles were obtained and reviewed.

RESULTS

The top 100 most cited articles received a mean 198 citations per paper. Publication dates ranged from 1953 to 2013; most articles were published between 1994 and 2003, with 50 articles published during that period. NEUROSURGERY published the greatest number of top cited articles (22 of 100). The most frequent study categories were laboratorial studies (31 of 100) and natural history studies (28 of 100). Nonoperative management studies were twice as common as operative management studies in the top-cited articles. Neurosurgery as a specialty contributed to 50% of the top 100 list. The most contributing institute was the Mayo Clinic (11%); the majority of the top cited articles originated in the United States (53%).

CONCLUSIONS

We identified the top 100 most-cited articles on meningioma that may be considered significant and impactful works, as well as the most noteworthy. In addition, we recognized the historical development and advances in meningioma research and the important contributions of various authors, specialty fields, and countries. A large proportion of the most cited articles were written by authors other than neurosurgeons, and many of these articles were published in non-neurosurgery journals.

Top 50 cited journal articles on overhead throwing athletes: a bibliographic analysis

Background

The frequency of citations for a journal article is a reflection of its academic impact. The purpose of this study was to identify and characterize the top 50 cited journal articles related to overhead throwing athletes in the published literature.

Methods

The Web of Science database was searched on January 18, 2016, using the terms "throwing athlete," "baseball," and "pitcher" to identify the top 50 cited articles related to overhead throwing athletes using the all-database function. The type of study, country of origin, publishing journal, and year published were reviewed for each article.

Results

The top 50 articles identified were cited between 95 and 471 times and were published in 13 journals between 1969 and 2011. Most of the articles were small case series or nonsystematic literature reviews. The shoulder was the most common body region studied in the top 50 articles (33 of 50 [66%]). Among original studies (n = 43), there was a good representation of surgical management of shoulder and elbow pathology in overhead athletes (9 of 43 [20.9%]); however, most of the articles reported on shoulder and elbow kinematics (19 of 43 [44.2%]) and pathoanatomy (15 of 43 [34.9%]).

Conclusion

The greater prevalence of nonsurgical articles may reflect a continued effort to better understand the different pathologies specific to overhead throwing athletes. An understanding of the variable content and quality of frequently cited articles on overhead throwing athletes may serve as a stepping stone for future studies to advance the diagnosis and management of complex elbow and shoulder injuries in these high functional individuals.

The 50 Most-cited Articles in Gastroenterology and Hepatology from Mainland China

OBJECTIVE

To identify and analyze the 50 most-cited gastroenterology and hepatology articles originating from mainland China.

METHODS

We utilized the 2015 edition of Journal Citation Reports and PubMed to determine the 50 most-cited gastroenterology and hepatology articles from 75 professional journals and four leading journals in clinical medicine, which are The New England Journal of Medicine, The Lancet, The Journal of the American Medical Association, and The British Medical Journal. Then we excluded the articles written outside mainland China and collected the basic information, including the title, authors, year of publication, source journal, city, institution, number of citations, and topic of the research.

RESULTS

The number of citations for the top 50 papers ranged from 279 to 89 (mean, 129). These articles were published between 2005 and 2012, in which 2009 was the year with the largest number of highly cited papers(13). All articles were published in 15 journals. The journal Hepatology published the largest number of articles(21), followed by Journal of Gastroenterology and Hepatology(4), Journal of Hepatology(4) and World Journal of Gastroenterology(4). The top 50 articles originated mainly from Shanghai(20), Guangzhou(13) and Beijing(6). Sun Yat-sen University produced most highly cited papers(10). The number of basic research was far more than clinical research, of which the ratio was about 1.78(32:18). In all these articles, hepatocellular carcinoma was the most-discussed topic(19), followed by hepatitis B virus(8) and endoscopic(5).

CONCLUSIONS

Although a large gap remains between mainland China and the global community, the gastroenterology and hepatology research from China is gradually recognized by the world.

The 100 most cited articles in ectopic pregnancy: a bibliometric analysis

Ectopic pregnancy (EP) remains a major gynecological emergency and is a cause of morbidity or even mortality in women. As a consequence, top citation analysis of EP research in database of the Science Citation Index Expanded is needed to assess the publication trends of leading countries/territories and institutes as well as the research hotspots of EP. A total of 4881 articles relevant to EP were retrieved in the database of the Science Citation Index Expanded from 1965 to present, in which the 100 top-cited articles were selected for further analysis. The number of citations ranged from 81 to 482 (131.57 ± 69.76), with a time span of 40 years between 1969 and 2009. These citation classics came from 14 countries, and 65 of the articles came from the United States. Yale University in Connecticut led the list of classics with six papers. The 100 top-cited articles were published in 32 journals, in which the journal of Fertility and Sterility published the most (23 papers). Stovall TG and Ling FW published the highest number of studies (6 papers each). Articles that originated in the United States and that were published in high-impact journals were most likely to be cited in the field of EP research. Bibliometric analysis was used to provide a historical perspective on the progress in EP research over the past 50 years. Citation analysis is a feasible tool to comprehensively recognize the advances of EP research in the past and future research.

The 100 classic papers in ulcerative colitis: a bibliometric analysis

BACKGROUND

The identification of the top 100 papers in ulcerative colitis (UC) using citation analysis provides a unique insight into the advancement of disease understanding and subsequent treatment innovations that have progressed over time.

METHODS

The Thomson Reuters Web of Knowledge was used to identify the 100 most cited UC manuscripts. Title, first and senior authors, institution and department of first author, journal, country of origin, year and topic of each manuscript were analyzed.

RESULTS

The top 100 manuscripts were published between 1955-2012. Thirty eight percent of the manuscripts originated from the US followed by the UK (26%). Genetics was the topic with the most publications (n = 27), followed by treatment (n = 22) and immunological pathways (n = 17). Truelove had the highest amount of authorships. The institutions with the highest number of publications were St. Mark's, London and the Radcliffe Infirmary.

CONCLUSION

This list of highly cited papers identifies the topics and authors that have made the most impact in the study of UC over the last century. This paper provides a reference of what could be considered as the most influential UC papers and serves as a reference of what comprises a 'highly citable' manuscript for both researchers and clinicians.

Required Reading: The Most Impactful Articles in Endoscopic Endonasal Skull Base Surgery

OBJECTIVE

Endoscopic endonasal skull base surgery has become widely accepted in neurosurgery and otolaryngology over the last 15 years. However, there has yet to be a formal curation of the most impactful articles for an introductory curriculum to its technical evolution.

METHODS

The Science Citation Index Expanded was used to generate a citation rank list (October 2015) on articles relevant to endoscopic skull base surgery. The top 35 cited articles overall, as well as the top 15 since 2009, were identified. Journal, year, author, study population, article format, and level of evidence were compiled. Additional surgeon experts were polled and made recommendations for significant contributions to the literature.

RESULTS

The top 35 publications ranged from 98 to 467 citations and were published in 10 different journals. Four articles had more than 250 citations. A period of frequent contribution occurred between 2005 and 2009, when 21/35 reports were published. 18/35 articles were case series, and 13/35 were technical reports. There were 11/35 articles focused primarily on pituitary surgery and 10/35 on extrasellar lesions. The top 15 articles since 2009 had 8/15 articles focused on extrasellar lesions. Polled surgeons consistently identified the most prominently cited articles, and their recommendations drew attention to cerebrospinal fluid leak as well as extrasellar management.

CONCLUSIONS

Identification of the most cited works within endoscopic endonasal skull base surgery shows greater anatomic access and safety over the last 2 decades. These articles can serve as an educational tool for novices or midlevel practitioners wishing to obtain a greater understanding of the field.

The 100 most influential manuscripts in colorectal cancer: A bibliometric analysis

PURPOSE

Bibliometric analysis highlights the key topics and studies which have led to the current understanding and treatment of a disease of interest. In this original article we analyze the 100 most cited manuscripts in the field of colorectal cancer (CRC).

MATERIALS AND METHODS

The Thomson Reuters Web of Science database with the search terms 'colorectal cancer,' 'colorectal cancer surgery,' 'colon cancer,' 'rectal cancer,' 'colorectal carcinoma,' 'colon carcinoma,' 'rectal carcinoma' and/or 'colonoscopy' was used to identify the manuscripts for the study. Only full length manuscripts were included. The 100 most cited papers were identified and further analyzed by topic, journal, author, year and institution. The journals' 5 year impact factor and Eigenfactor scores were recorded.

RESULTS

146,833 eligible papers were returned. Within the top 100 cited manuscripts, the most studied topic was genetics in CRC (n = 41), followed by chemotherapy (n = 20) and surgical management (n = 7). The most cited paper authored by Fearon et al. (7850 citations) focused on genetic models of tumorgenesis. The NEJM published the highest number of papers (n = 23 with 42,576 citations). The country and year with the greatest number of publications were the USA (n = 62) and 2004 (n = 13) respectively.

CONCLUSION

The most cited manuscripts highlighted in the current work describe the genetic, immunologic, basic science and surgical techniques that have resulted in the current understanding and treatment of CRC. The majority of these works were published in high impact journals and have been cited at least 900 times each reflecting their quality and influence. This work provides a reference of what could be considered as the most influential papers in CRC and serves as a reference for researchers and clinicians as to what makes a 'citable' paper.

The top 100 most cited scientific reports focused on diabetes research

AIMS

The number of citations that a paper has received reflects the impact of the article within a particular medical research area. However, which articles are cited most frequently in diabetes research is unknown. We aimed to identify the most frequently cited 100 articles that describe advances focused on diabetes research.

METHODS

Science Citation Index Expanded database was used to determine the 100 most cited articles in diabetes research. The key characteristics of the top 100 cited articles, including citation ranking, year of publication, publishing journal, type of study, h-index, PMC citation, patent citation, country of origin, funding source, and authorship, were analyzed.

RESULTS

The number of citations ranged from 10292 to 1121. The 100 most cited articles were published between 1962 and 2010. New England Journal of Medicine published the largest number of the most cited articles (n = 23), followed by Diabetes Care (n = 14) and Nature (n = 12). The greatest number of contributions came from the USA, followed by the UK and Canada. RCT was the most popular article type, followed by basic science studies and observational studies. There was a positive correlation between total citations and h-indexes and PMC citations, while there was no correlation with patent citations.

CONCLUSIONS

The most influential report in diabetes research seems to be RCT, which is performed to confirm the effectiveness and outcome of anti-diabetes drugs in patients with diabetes. This study presents insight into the historical development of diabetes research, and provides foundations for further investigations.