Publications by authors named "Nikan Namiri"
Objectives: To describe and enumerate surgeries for patients who underwent reconstruction or amputation after severe distal tibia, ankle, and mid to hindfoot injuries.
Methods: Design: Secondary analysis of a multicenter prospective observational study.
Setting: 31 U.
Objectives: Electric biking (e-biking) is a rapidly growing recreation, sport, and mode of transportation that often presents to emergency departments (EDs) with high-impact head injuries. This study aimed to evaluate the epidemiology of e-bike-related concussions and closed-head injuries (CHI) to inform more effective injury prevention strategies.
Methods: The National Electronic Injury Surveillance (NEISS) was queried for e-bike related concussions and CHIs presented to national EDs from 1 January 2013-31 December 2022.
Background: Head injury rates in lacrosse may be higher among women compared with men. Understanding these trends can guide appropriate injury prevention for female athletes.
Hypotheses: Injuries most commonly involve the head, with no significant decline over the study period; contact with other players would be the most common injury mechanism.
Article Synopsis
- Research on patellar resurfacing in total knee arthroplasty (TKA) shows mixed results, prompting an analysis of statistical fragility using measures like fragility index (FI) and fragility quotient (FQ).
- A systematic review of RCTs revealed 19 relevant studies, finding that significant outcomes had a median FI of 3, while nonsignificant outcomes had a median reverse FI (rFI) of 5.
- The study concluded that outcomes related to patellar resurfacing are statistically fragile, especially those involving patient satisfaction and anterior knee pain, indicating that current data remains inconclusive.
Article Synopsis
- This study analyzed basketball-related shoulder dislocations reported in US emergency departments from 2013 to 2022, using data from the National Electronic Injury Surveillance System (NEISS).
- A total of 52,417 shoulder dislocations were recorded, with a significant decrease in incidents over the study period, particularly from 2019 to 2020.
- The main cause of dislocations was falling, predominantly affecting young adults and adolescents, while females were more prone to dislocations resulting from player contact.
Background: While prevention protocols have been implemented, skiing-related musculoskeletal injuries and concussions continue to present to emergency departments in the United States. Previous literature has suggested the pediatric population may constitute up to 40% of skiing-related injuries.
Purpose: To assess injury trends and the underlying mechanisms of skiing injuries in pediatric patients seen at emergency departments in the United States.
Article Synopsis
- The study analyzed eye and orbital injuries in riders of non-powered scooters, e-scooters, and hoverboards in the US from 2014 to 2019, confirming significant increases in injuries.
- A striking rise in e-scooter injuries (586%) and hoverboard injuries (866%) was noted, particularly among young adults in urban areas, with hospital admissions rising drastically.
- Eye injuries specifically increased by 96.9%, with common types including eyebrow lacerations and eyelid injuries, yet these are likely underreported in official statistics compared to actual case narratives.
Article Synopsis
- This study evaluated the statistical fragility of outcomes from randomized controlled trials (RCTs) on marrow stimulation for knee cartilage defects, using metrics like the fragility index (FI) and fragility quotient (FQ).
- The analysis of 21 RCTs revealed that most outcomes (32 statistically significant and 123 nonsignificant) had low FI values, indicating a tendency for results to change with minor variations in data, especially in studies with stem cell augmentations.
- The researchers concluded that the findings are statistically fragile and recommend that future studies report p-values alongside FI and FQ values for better understanding of results in cartilage restoration trials.
Article Synopsis
- The study examines upper extremity injuries in youth volleyball players presenting to U.S. emergency departments from 2012 to 2022, analyzing data on injury types, causes, and patient demographics.
- A total of 131,624 injuries were estimated, with the majority affecting fingers and wrists, and the most common injuries being strains/sprains and fractures, predominantly among female players.
- Overall injury rates showed a significant decrease over the years, with females experiencing more contusions and strains compared to males, indicating a trend that highlights the need for targeted prevention strategies.
Background: Dual mobility (DM) constructs for revision total hip arthroplasty (THA) have continued to grow in popularity to mitigate instability. This benefit comes at the cost of potential unique modes of failure, and there are theoretical concerns that combining femoral and acetabular components from different manufacturers could lead to increased failure rates. We aimed to investigate rates of reoperation between matched and unmatched DM implants used in revision THA.
View Article and Find Full Text PDFPurpose: To perform patellofemoral joint (PFJ) geometric measurements on knee magnetic resonance imaging scans and determine their relations with chondral lesions in a multicenter cohort using deep learning.
Methods: The sagittal tibial tubercle-trochlear groove (sTTTG) distance, tibial tubercle-trochlear groove distance, trochlear sulcus angle, trochlear depth, Caton-Deschamps Index (CDI), and flexion angle were measured by use of deep learning-generated segmentations on a subset of the Osteoarthritis Initiative study with radiologist-graded PFJ cartilage grades (n = 2,461). Kruskal-Wallis H tests were performed to compare differences in PFJ morphology between subjects without PFJ osteoarthritis (OA) and those with PFJ OA.
Objective: Our study aimed to investigate the association between time to incidence of radiographic osteoarthritis (OA) and magnetic resonance imaging (MRI)-based structural phenotypes proposed by the Rapid Osteoarthritis MRI Eligibility Score (ROAMES).
Methods: A retrospective cohort of 2,328 participants without radiographic OA at baseline were selected from the Osteoarthritis Initiative study. Utilizing a deep-learning model, we automatically assessed the presence of inflammatory, meniscus/cartilage, subchondral bone, and hypertrophic phenotypes from MRIs acquired at baseline and 12-, 24-, 36-, 48-, 72-, and 96-month follow-up visits.
The 3D nature and soft-tissue contrast of MRI makes it an invaluable tool for osteoarthritis research, by facilitating the elucidation of disease pathogenesis and progression. The recent increasing employment of MRI has certainly been stimulated by major advances that are due to considerable investment in research, particularly related to artificial intelligence (AI). These AI-related advances are revolutionizing the use of MRI in clinical research by augmenting activities ranging from image acquisition to post-processing.
View Article and Find Full Text PDFArticle Synopsis
- The study analyzed playground equipment-related injuries in children aged 17 and under using data from the National Electronic Injury Surveillance System from 1995 to 2019, totaling over 184,000 cases.
- An estimated 5.3 million emergency department visits for playground injuries occurred, with most injuries affecting school-aged (42.7%) and preschool children (35.3%), and climbing apparatuses being the most common source of injuries.
- While overall injuries have decreased since 2012, there has been a troubling rise in reported concussions, indicating the need for increased focus on preventing serious head injuries in playground settings.
Background: Cancer patients incur high care costs; however, there is a paucity of literature characterizing unmet financial obligations for patients with urologic cancers. Kidney cancer patients are particularly burdened by costs associated with novel systemic treatments. This study aimed to ascertain the characteristics of GoFundMe® crowdfunding campaigns for patients with kidney cancer, in order to better understand the financial needs of this population.
View Article and Find Full Text PDFIntroduction: Cycling can lead to microtrauma due to increased perineal pressure, possibly contributing to genital numbness and sexual dysfunction in female cyclists.
Aim: We aim to explore the associations between cycling characteristics, female genital numbness, and female sexual dysfunction.
Methods: We conducted a cross-sectional study on female cyclists and sexual wellness.
Article Synopsis
- * This study used convolutional neural networks to analyze knee MRIs and classify them into different phenotypes, providing insights into their relationship with the development of OA and the need for knee replacements over time.
- * Findings indicate that specific phenotypes, particularly bone and hypertrophy, significantly increase the chances of developing structural OA and symptomatic OA, suggesting that AI can improve patient stratification for targeted therapeutic trials.
Introduction: Publications at any point in training can impact future academic interest and achievement. Implications of publishing scholarly work prior to residency on accomplishments during and after residency are understudied.
Methods: We obtained publication output before, during and after residency for urologists graduating between 2002 and 2008 from the 36 training programs affiliated with a top 50 urology hospital nationwide.
Objective: To evaluate the demographics, epidemiology, and common mechanisms associated with playground equipment-related genital injuries in children.
Methods: We examined the National Electronic Injury Surveillance System database to obtain playground-related genital injuries sustained in children ≤17 years from 2010 to 2019. Demographics of the patients and injury characteristics were analyzed using sample weights to produce national estimates.
Objective: To explore the relationship between research time during urologic training and career academic success.
Methods: We included urologists graduating residency between 2002 and 2008 from 36 programs affiliated with a top 50 hospital for urology as ranked by the United States News and World Report, and collected research time during residency, fellowship training, current appointment (private practice, assistant professor, associate professor, professor, chair), national institutes of health (NIH) grant accrual, NIH R01 grant accrual, and current H-index in Scopus database. Publication output during and after residency was identified through the PubMed database.
Aims: Treatment for urinary incontinence (UI) includes pelvic floor muscle training (PFMT). There is limited data appraising the characteristics of PFMT devices. We aimed to ascertain the primary use, strengths and weaknesses of PFMT devices available online, through evaluation of consumer reviews.
View Article and Find Full Text PDFAims: Voiding positions and preferences in men are not well characterized. In this study, we aim to understand the interplay of voiding characteristics and their impact on voiding position.
Methods: We designed a 27-item survey to assess voiding characteristics and lower urinary tract symptoms (LUTS) severity in men seen in urology and other outpatient clinics.
Purpose: To evaluate the diagnostic utility of two convolutional neural networks (CNNs) for severity staging of anterior cruciate ligament (ACL) injuries.
Materials And Methods: In this retrospective study, 1243 knee MR images (1008 intact, 18 partially torn, 77 fully torn, and 140 reconstructed ACLs) from 224 patients (mean age, 47 years ± 14 [standard deviation]; 54% women) were analyzed. The MRI examinations were performed between 2011 and 2014.