Browsing by Author "Kolac, U.C."

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    Citation - Scopus: 3
    Source-Dependent Quality Variation in Shoulder Dislocation Videos on Youtube
    (Elsevier Inc., 2024) Kaymakoğlu, Mehmet; Aksoy, T.; Kolac, U.C.; Ozdemir, E.; DePhillipo, N.N.; Huri, G.; Familiari, F.
    Purpose: To assess the quality of YouTube videos for patient education on shoulder dislocation. Methods: A standard YouTube search was performed in March 2023 using the terms “shoulder dislocation,” “dislocated shoulder,” and “glenohumeral joint dislocation” to identify eligible videos. Multiple scoring systems, including DISCERN (a validated tool for analyzing the quality of health information in consumer-targeted videos), Journal of the American Medical Association (JAMA) Benchmark Criteria, and the Global Quality Score (GQS) were used to evaluate the videos. Video quality scores from various sources were compared using the Kruskal-Wallis test for initial analysis, followed by Dunn's post-hoc test with Bonferroni correction, and the strength of relationship between variables was assessed using Spearman's rank correlation coefficient. Results: A total of 162 eligible videos were identified. The mean video duration was 11.38 ± 3.01 minutes, the median number of views was 653. Median number of days since upload was 1,972, the median view rate was 0.343, and median number of likes was 66.12. Based on the DISCERN classification, a substantial proportion of videos were classified as insufficient quality, with 19.4% as “very insufficient” and 42.1% as “insufficient”; 24.1% were classified as “average” quality, whereas only 13.1% were classified as “good” and 1.2% were “excellent.” Videos from academic and professional sources showed a significant positive correlation with DISCERN scores (rho: +0.784, P < .001) and greater scores on all 4 scoring systems compared to health information websites. Conclusions: This study reveals that the majority of YouTube videos on shoulder dislocation lack sufficient quality for patient education, with content quality significantly influenced by the source. Clinical Relevance: Examining the accuracy of information that patients encounter on YouTube is essential for health care providers to direct individuals toward more reliable sources of information. © 2024 The Authors
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    Toward a New Era in Fracture Imaging: Zero Echo Time MRI Vs CT in Intra-Articular Distal Radius Fractures — A Proof-of Study
    (Elsevier Ltd, 2025) Kaymakoğlu, M.; Kolac, U.C.; Bahsi, A.; Filibeli, M.; Türken, M.A.; Dogan, K.; Şahin, E.
    Background Computed tomography (CT) is the current reference standard for evaluating intra-articular distal radius fractures, however concerns remain regarding radiation exposure and limited soft tissue assessment. Zero Echo Time (ZTE) MRI is a novel technique that enables direct cortical bone imaging with contrast similar to CT, while avoiding radiation. This proof-of-concept study aimed to compare the diagnostic performance of ZTE MRI with CT in fracture classification, articular involvement, and treatment planning. Methods In this prospective comparative study, 28 patients with acute intra-articular distal radius fractures underwent both CT and ZTE MRI within 7 days of injury. Fractures were classified according to AO/OTA, Fernandez classifications, quantitative parameters (angulation, radial inclination, ulnar variance, articular fragment count) and binary findings (distal ulna fracture, distal radioulnar joint (DRUJ) involvement) were assessed. Two orthopedic surgeons and two musculoskeletal radiologists independently reviewed all images. Inter- and intraobserver agreement was calculated using Cohen’s and Fleiss’ kappa and intraclass correlation coefficients. Results Agreement among surgeons for AO/OTA classification was good on CT (κ = 0.767) and good on ZTE MRI (κ = 0.680). For Fernandez classification, agreement was good on CT (κ = 0.780) and ZTE (κ = 0.736). Surgeons demonstrated higher agreement (κ ≈0.68–0.78) than radiologists (κ ≈0.56–0.65). For binary parameters, agreement among radiologists was very good (κ = 0.820–0.880), while inter-surgeon agreement ranged from moderate to good (κ = 0.500–0.714). Continuous measures showed good reproducibility for angulation (ICC = 0.762–0.858), but lower values for inclination among surgeons (ICC ≤ 0.492–0.531). ZTE MRI demonstrated sensitivity, specificity, and accuracy comparable to CT for classification and detection of DRUJ involvement and distal ulna fractures (approximately 85–93 %). Treatment decisions showed very good agreement (κ = 0.855), with ZTE altering CT-based management in 3/28 (10.7 %) cases for Surgeon 1 and 2/28 (7.1 %) for Surgeon 2. Conclusion ZTE MRI provides diagnostic performance comparable to CT for intra-articular distal radius fractures, with high reliability for fracture classification, joint involvement, and treatment decision-making. As a radiation-free modality that also permits concurrent soft tissue assessment, ZTE MRI may serve as a promising alternative to CT in selected clinical scenarios. © 2025 Elsevier Ltd.