bluuebunny/crossref_metadata_2025_split huggingface dataset:
Poster 353: LOWER PSYCHOLOGICAL READINESS FOR RETURN TO SPORT AFTER ACL RECONSTRUCTION IS ASSOCIATED WITH REDUCED PERFORMANCE AND GREATER LIMB ASYMMETRY ON FUNCTIONAL TESTING
Authors: Christino Melissa , Coene Ryan , Cook Danielle , Kocher Mininder , Kramer Dennis , Yen Yi-Meng , Micheli Lyle , Milewski Matthew , Scott Elizabeth 
Published: August 2023

Objectives: The relationship between psychological and physical readiness for return to sport after anterior cruciate ligament reconstruction (ACLR) is not well understood. Psychological stress and psychological readiness were therefore evaluated at six months following primary ACLR along with standard functional patient reported outcome (PRO) instruments and physical performance tests to understand the relationship between the physical and psychological readiness in young athletes. Methods: Participants were evaluated at six months after ACLR with Hospital for Special Surgery Pediatric Functional Activity Brief Scale (HSS Pedi-FABS), International Knee Documentation Committee Questionnaire (IKDC), PROMIS Psychological Stress Experience (PSE) and ACL Return to Sport After Injury Scale (ACL-RSI). Functional testing included gluteal, hamstring, and quadriceps strength testing, single leg hop (SLH), crossover hop, triple hop and timed 6-meter SLH. Patient characteristics and continuous and categorical variables were summarized. Pearson’s correlation coefficient and multivariable regression were used to determine associations between the limb symmetry index (LSI) on functional testing and PROs. Those with LSI deficits of less than 20% (better performance) were then compared to those with deficits greater than 20% (worse performance). Results: 229 participants (89 male, 140 female) of median age 17 years (range 10.3 to 30.6 years) were enrolled. IKDC had a moderate negative correlation with PROMIS PSE (r=0.39 ; 95% CI=-0.49, -0.27; p<0.001) and a moderate positive correlation with ACL-RSI (r=0.55; 95% CI=0.46, 0.64; p<0.001) (Figure 1). 151 patients completed functional testing. ACL-RSI demonstrated a positive correlation with SLH LSI (r=0.21;95% CI=0.05, 0.35; p=0.01) and timed 6-meter SLH (r=0.28; 95% CI, 0.42; p=0.001) (Figure 2). When controlling for sex, age, and graft type, patients who had less than a 20% deficit on the SLH scored 17.9 points higher on ACL-RSI (p<0.001), and those with less than a 20% deficit on crossover hop testing scored average 13.9 points higher on ACL-RSI (p=0.04). Conclusions: At 6 months after ACLR, highe r psychological readiness for return to sport is associated with better performance and greater symmetry on hop testing, suggesting a potential link between physical and psychological recovery.
Poster 354: Biomechanical Comparison of Open versus Percutaneous Techniques for Primary Mid- Substance Achilles Tendon Repair: A Systematic Review and Meta-Analysis
Authors: Sequeira Sean , Imbergamo Casey , Guyton Gregory , Hembree Walter , Gould Heath , Lawson Jonathan 
Published: August 2023

Objectives: Primary repair of mid-substance Achilles tendon rupture may be performed using an open or a percutaneous technique. Previous meta-analyses of clinical data comparing the two techniques have demonstrated mostly equivalent functional outcomes and re-rupture rates. Individual cadaveric studies have also compared the biomechanical properties of the two approaches. However, the results of these studies have been heterogeneous, and there is currently no consensus as to whether one technique may be biomechanically superior. The purpose of this meta-analysis was to evaluate the biomechanical properties of open versus percutaneous Achilles tendon repair. Methods: A systematic review of original research articles was performed using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. To qualify for study inclusion, articles were required to be published in English, utilized a cadaveric laboratory design, and had to directly compare the biomechanical properties of open Achilles repair using a Krackow or Kessler technique versus percutaneous repair using either the PARS (Arthrex) or Achillon (Integra) tendon repair systems. Evaluated outcomes included displacement (mm), load to failure (N), and stiffness (N/m). Results: Nine studies met inclusion criteria, including 190 cadaveric specimens (open: 83, PARS: 56; Achillon: 51) that underwent primary mid-substance Achilles tendon repair. Pooled analysis demonstrated no statistically significant difference in displacement (p = 0.418; Figure 1), load to failure (p = 0.923; Figure 2), or stiffness (p = 0.195; Figure 3) between the open and percutaneous techniques. Conclusions: The results of this study suggest that both open and percutaneous techniques are biomechanically viable approaches for primary mid-substance Achilles tendon repair. These biomechanical findings must be interpreted in the context of clinical outcomes data as well as the differing complication profiles of the two techniques to best inform the surgical decision-making process for primary mid-substance Achilles tendon repair.
Poster 358: Minutes Per Game and Usage Rate Associated with Time Loss after Ankle Injury: A Characterization of Foot and Ankle Injuries and Associated Risk Factors in National Basketball Association Athletes
Authors: Morikawa Landon , Brinkman Joseph , Crijns Tom , Vij Neeraj , Gill Vikram , Patel Karan , Chhabra Anikar , Tummala Sailesh 
Published: August 2023

Objectives: Injuries to the foot and ankle are more common in National Basketball Association (NBA) basketball compared to other professional sports. The goal of this study is to report the incidence and associated risk factors of foot and ankle injuries in the NBA athletes. Methods: Foot and ankle injury data from the 2015-16 through 2020-21 NBA seasons was queried and verified using a publicly available database. The truncated 2019-20 season was omitted from this study due to the COVID-19 pandemic. The primary outcome was the incidence of foot and ankle injuries, reported per 1000 game exposures (GEs). Secondary analysis was performed to identify risk factors for ankle injuries through bivariate analysis and multivariable logistic regression of player demographics, performance statistics, injury characteristics, and previous lower extremity injuries. Additionally, factors influencing the length of absence were assessed via negative binomial regression. Results: There were 728 structural foot and ankle injuries (5.34 per 1000 GEs) sustained by NBA players over 5 NBA seasons, with sprain/strain as the most common injury type (4.27 per 1000 GEs) (Table 1). The majority of ankle injury events (55%) resulted in 2-10 game absences (Table 4). The likelihood of sustaining an ankle injury was significantly associated with a greater number of games played, previous upper leg injury, and more games missed due to injury (Table 2). Increased length of absence due to ankle injury was significantly associated with greater height, minutes per game, usage rate, points per game, total rebounds per game, and a prior history of foot, ankle, and knee injuries (Table 3). Conclusions: The incidence of foot and ankle injuries was 5.34 per 1000 GEs in professional basketball players. Games played and previous history of upper leg injuries were found to be risk factors for ankle injuries. Factors associated with physiologic burden such as minutes per game and usage rate were associated with an increased severity of injury. [Table: see text][Table: see text][Table: see text][Table: see text]
Poster 364: Prospective Assessment of Outcomes after Femoral Condyle Osteochondral Allograft with Concurrent Meniscus Allograft Transplantation
Authors: Richards Jarod , Stannard James , Rucinski Kylee , Nuelle Clayton , Cook James 
Published: August 2023

Objectives: To report outcomes and associated risk factors for treatment failure (revision surgery or conversion to arthroplasty) in a consecutive series of patients undergoing concurrent femoral condyle osteochondral allograft (OCA) and meniscus allograft (MAT) transplantation using advances in tissue preservation and surgical techniques. Methods: Patients who underwent primary femoral condyle OCA transplantation and concomitant MAT (OCAT+MAT) between 2016-2020 with minimum 2-year follow up data regarding complications, failures, adherence, and patient reported outcome measures (PROMs) were analyzed. Patients who required OCA and/or MAT revision or conversion to artificial arthroplasty were defined as treatment failures. Patient reported outcome measures (PROMs) including VAS pain, IKDC, SANE, PROMIS Global Health and Physical Function, were collected at 3 and 6 months and then yearly after transplantation. Fisher’s exact tests were used to compare proportions and repeated measures ANOVA tests were used to compare longitudinal PROMs data for statistically significant (p<0.05) differences. Results: A total of 21 consecutively enrolled patients met inclusion criteria with mean age of 35 (15-54) years and mean BMI of 27 (19-36) kg/m2. OCAT+MAT was performed in the medial compartment in 14 cases and lateral compartment in 7 cases. Realignment osteotomies were performed in 4 cases. Initial success rate (mean follow-up of 44 mos) was 76% based on 1 revision and 4 arthroplasties performed. Overall success rate was 81% based on successful revision. Statistically significant (p<0.002) and clinically meaningful improvements were noted for all measured PROMs (VAS pain, IKDC, SANE, PROMIS) at 2-year follow up. Patients requiring conversion to arthroplasty were significantly older (mean age, 48.3 v 32.2 years, p=0.0076) than patients with successful outcomes. Nonadherence with postoperative restrictions and rehabilitation protocol was an independent risk factor for conversion to arthroplasty (p=0.022, OR=42). Conclusions: Combined femoral condyle OCA and meniscus allograft transplantation was associated with successful short- to mid-term outcomes in 81% of cases. Older age and nonadherenceto postoperative protocols are risk factors for decreased outcomes.
Poster 372: Women in Leadership in Orthopaedic Sports Medicine Societies Throughout the World
Authors: Meyers Jade , Ierulli Victoria , Hiemstra Laurie , Mulcahey Mary , Tanguilig Grace 
Published: August 2023

Objectives: The proportion of women in orthopaedic surgery is low compared to other specialties, despite a equal numbers of women and men entering the field of medicine. This gender disparity persists across various aspects of orthopaedic sports medicine. The purpose of this study was to characterize the number of women in leadership positions in orthopaedic sports medicine and arthroscopy societies throughout the world and compare the percentages of women vs men in leadership positions. Methods: Publicly available websites for orthopaedic sports medicine societies throughout the world were evaluated during March 2022. Non-surgical sports medicine societies were excluded, as were societies lacking publicly available leadership information. Data were collected as listed on the websites, and categorized into Board of Directors, Executive Committee, Office, Council (all typically included Presidential line, Vice-President, Treasurer, Secretary, or other specific high-ranking members), and Committee Chairs (excluded general committee members). Results: Of the 46 societies, 16 (34.8%) were in Europe, 10 (21.7%) in Asia, 6 (13.0%) in South America, 5 (10.9%) in North America, 3 in the Middle East (6.5%), 2 in Africa (4.4%), 2 in Australia (4.4%), and 2 were international organizations (4.4%). Four countries had more than one orthopaedic sports medicine society: Argentina, Israel, Australia, and Mexico. As represented by Figure 1, the Board of Directors were comprised of 2.5% women (4/161), the Executive Committees were 7.1% women (11/154), Committee Chairs were 9.4% women (13/138), Officers were 15.8% women (3/19), Councils were 5.9% women (1/17), and Spokespersons were 16.7% women (1/6). For the Board of Directors, North America and Europe led in women representation with 4.0% and 3.8%, South America had 2.0%, and societies from the Middle East and Asia reported no women. Regarding Executive Committee, North America had the most women with 27.8%, and the remaining regions ranged from 0.0-7.9%. For Committee Chairs, both European and International societies had around 8% women in leadership (8.0% and 7.7%, respectively), yet North America had double with 16.7% women. Of the regions reporting Officers, Asia and Europe had similar percentages (16.7% and 18.2%), whereas Australia reported zero women in office. Only one region reported electing a Council and two regions listed Spokespersons. Conclusions: This study highlights the gender disparities in leadership positions in orthopaedic sports medicine societies throughout the world. The visibility of women in high-ranking positions may contribute to the interest of women and other minorities in the field of sports medicine and help improve diversity. Future studies should investigate factors contributing to the paucity of women in leadership positions and identify ways to increase the proportion of women in orthopaedic sports medicine.
Poster 384: Inequalities in the Evaluation of Male vs. Female Athletes in Sports Medicine Research: A Systematic Review
Authors: Sonnier John , Johnson Emma , Hall Anya , Osman Alim , Connors Gregory , Freedman Kevin , Bishop Meghan , Paul Ryan 
Published: August 2023

Objectives: Female sport participation has steadily increased over the past several decades; however, inequalities still exist regarding participation rates, social norms, and available resources. It is possible that inequalities between male and female athletes extend beyond the performance of sport and into medical research. Therefore, the purposes of this systematic review were to 1) compare the number of published studies evaluating male vs. female athletes in various sports, and 2) identify which co-ed sports currently under-represent female athletes in the sports medicine literature. Methods: All non-review research studies published from 2017-2021 in six top sports medicine journals were considered for inclusion. Only sports medicine studies that isolated athletes, reported study outcomes specific to male and/or female patients, provided study outcomes for specific sport(s), and evaluated three or fewer different sports, were included. The total number of studies reporting on male and/or female athletes were compared for all sports, and odds ratios (OR) were calculated. Comparisons of study design, level of sport participation, outcomes assessed, and study quality were also made based on subject sex. Results: Overall, 669 studies were included the systematic review. Most of the included studies isolated male athletes (70.7%), while 8.8% isolated female athletes and 20.5% included both male and female athletes. Female athletes were more frequently studied in softball and volleyball, while male athletes were more commonly researched in baseball, soccer, American football, basketball, rugby, hockey, and Australian football. Notably, male athletes were largely favored in baseball/softball (91% vs. 5%, OR=18.2), rugby (72% vs. 5%, OR=14.4), soccer (65% vs. 15%, OR=4.3), and basketball (58% vs. 18%, OR=3.2). Conclusions: Sports medicine research has favored the evaluation of male athletes in most sports, including the majority of co-ed sports. Potential reasons for this inequality of research evaluation include availability of public and database data, financial and promotional incentive, a high percentage of sports medicine clinicians and researchers being male, and sex biases in sport. While the causes of these differences are multi-faceted, researchers should consider both sexes for study inclusion whenever possible and journals should support a more balanced representation of research publications regarding male and female athletes.
Poster 391: Are Sport-Related Injuries Becoming More Common in Collegiate Baseball Players?
Authors: Ishikawa Hiroaki , Cushman Daniel , Tashjian Robert , Chalmers Peter 
Published: August 2023

Objectives: Sport-related injuries remain a significant problem for collegiate baseball players. Prevention and management program of the injuries can be developed through epidemiological research aimed at defining the nature of injuries related to baseball. However, there is little information regarding the incidence and characteristics of the injuries among collegiate baseball players. The purpose of this study was to examine the current trends of sport-related injuries among collegiate baseball players in the PAC-12 conference. Methods: Demographic and injury data were obtained from a database of the PAC-12 Health Analytics Program (HAP) between 2016 and 2021. Injury incidence, type, mechanism, and outcome were analyzed. The annual injury incidence was defined as the number of injuries per total players for one year. Linear regression model was used to assess trends of the number of injuries over the 6 years. Results: A total of 2188 injuries (1434 sport-related injuries, 66%; 754 non-sport-related injuries, 34%) occurred in 6 years. The number of sport-related injuries significantly increased from 2016 (n = 75; annual incidence, 8.5 per 100 player-years) to 2021 (n = 378; annual incidence, 43.0 per 100 player- years) ( R2 = .735; P = .029) (Figure 1). Most of the sport-related injuries occurred in pitchers (33.6%). The majority of sport-related injuries were acute (76.6%), resulted in missed time (68.8%), and were new injuries (86.9%). Most sport-related injuries were caused by non-contact events (53.2%) and occurred during in-season games (39.9%) and practice (47.4%). Only 1.3% of sport-related injuries did not result in a return to previous activity level. The shoulder was the most commonly-injured anatomic area, followed by the arm/elbow. Shoulder impingement-related injuries were the most common specific diagnoses (n = 98), followed by ulnar collateral ligament (UCL) injuries (n = 63), hamstring muscle strains (n = 60), ankle ligament sprains (n = 46), and hand/wrist fractures (n = 40). Surgical interventions were performed on 5.1% of shoulder impingement-related injuries, 41.3% of UCL injuries, 35.0% of hand/wrist fractures, and none on hamstring muscle strains or ankle ligament sprains. The average days to clearance for shoulder impingement-related injuries, UCL injuries, hamstring muscle strains, ankle ligament sprains, and hand/wrist fractures were 23 ± 62, 167 ± 197, 18 ± 30, 33 ± 155, and 40 ± 51 days, respectively. Conclusions: The number of sport-related injuries among collegiate baseball players has increased over the past 6 years. Shoulder impingement-related injuries followed by UCL injuries, hamstring muscle strains, ankle ligament sprains, and hand/wrist fractures are the most common specific diagnoses among this cohort of collegiate baseball players. Of the most common specific diagnoses, UCL injuries often require surgical interventions and most impact playing time.
Investigating the Impact of Community Volunteerism on the Mental Health of Medical Students
Authors: Duncan Sheina A. , Sperling Gabriel L. , Moy Matthan I. , Hansen Regina , Soudah Chris K. , Rodriguez Patrick , Rego Andrea , Rojas Vivian N. , Paul Melody , Robicheaux Joseph A. , Chen Carrie , Thang Christopher , Agana Denny Fe G. 
Published: August 2023

OBJECTIVE This study aimed to analyze the impact of community service on the mental health of medical students through their perception of stress. METHODS The 10-item Perceived Stress Scale was used to measure the stress levels of 82 medical students over a 3-month period. Additional survey questions gauged students’ weekly volunteer experiences in clinical and nonclinical settings and their perceived effects on stress and quality of life. RESULTS Results found an inverse relationship between the number of clinical volunteer hours and perceived stress ( P = .0497). Nonclinical and total volunteer hours were correlated with both reduced perceived stress levels (nonclinical P = .0095, total P = .0052) and better quality of life (nonclinical P = .0301, total P = .0136). All individual perceived stress scores fell into the low or moderate stress ranges of the Perceived Stress Scale per the week-to-week analysis. CONCLUSION The preliminary results raised important research questions about the impact of volunteering on medical student perceived stress. As medical students face higher levels of stress in comparison to the general population, it is exceedingly important to determine methods to decrease their risk of compromising their mental health. This study may aid in decision-making and research in favor of or against offering community service opportunities as part of the core medical education curriculum.
OSNA Total Tumor Load for the Prediction of Axillary Involvement in Breast Cancer Patients: Should We use Different Thresholds According to the Intrinsic Molecular Subtype? MOTTO Study
Authors: Bernet L , Hardisson D , Rodrigo M , Córdoba A , Sancho M , Peg V , Ruiz I , Godey F , Sánchez-Méndez JI , Prat A 
Published: August 2023

Aims: To assess the impact of the molecular subtype (MS) on the total number of CK19 mRNA copies in all positive SLN (TTL) threshold, to predict non-SLN affectation, and to compare 5 years progression-free survival (PFS) according to the risk of recurrence (ROR) group by PAM50. Methods: Cohort with infiltrating breast cancer with intra-operative metastatic SLN detected by one-step nucleic acid amplification (OSNA) assay who underwent subsequent ALND. Logistic regression was used to assess a possible interaction between TTL and MS(Triple Negative, Her-2-Enriched, Luminal A, or Luminal B), or hormone receptors (HR: positive or negative) by immunohistochemistry (IMH). Cox regression was used to compare PFS and OS in the 3 ROR groups (high, medium, or low). Results: TTL was predictive of non-SLN affectation in both univariate (OR [95% CI]: 1.72 [1.43, 2.05], P < .001) and multivariate (1.55 [95% CI: 1.04, 2.32], P = .030) models, but MS-IMH or HR-IMH, and their interactions with TTL were not (best multivariate model: HR + main effect OR 1.16 [95% CI: 0.18, 7.64], P = .874; interaction OR: 1.04 [0.7, 1.55], P = .835; univariate model: HR + main effect OR: 1.44 [95% CI: 0.85, 2.44], P = .180). PFS was lower in the high-risk ROR group (81.1%) than in the low-risk group (93.9%) (HR: 3.68 [95 CI: 1.70, 7.94], P < .001). Conclusions: our results do not provide evidence to support the utilization of subtype-specific thresholds for TTL values to make therapeutic decisions on the axilla. The ROR group was predictive of 5 years-PFS.