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Yetişkin Kadınlarda Siberkondriya Düzeyleri ile E Sağlık Okuryazarlığı ve Yapay Zeka Okuryazarlığı Arasındaki İlişkinin İncelenmesi
No full textInfluence of Wolff's law on the biomechanical and corrosion behavior of screws in femoral neck fixation
No full textThis study evaluates the biomechanical performance of Ti6Al-4 V and 316L stainless steel (SS) screws for femoral neck fracture fixation. The microstructural analysis scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) was conducted to examine material composition. X-ray diffraction patterns of Ti6Al4 V and AISI 316L materials were added for identifying crystallographic phases. Simulation results revealed significant differences when comparing Ti6Al4V and 316L screw materials. For Ti6Al4V screws, the von Mises stress in the screw body was 204.56 MPa, and the stress above the fracture line was 124.57 MPa. In contrast, for 316L stainless steel screws, the stress within the body increased to 236.33 MPa, while the stress at the fracture line decreased to 109.65 MPa. Examining deformation-related parameters, the gap value for Ti6Al4V screws was 0.065 mm, penetration value was 0.0036 mm, sliding distance was 0.109 mm, and total deformation was 2.4625 mm. For 316L screws, these values are 0.054 mm, 0.0032 mm, 0.091 mm, and 2.4634 mm, respectively. While 316L offers better initial mechanical stability, Ti6Al4 V remains favorable for long-term use due to superior corrosion resistance and biocompatibility. Despite widespread use of Ti6Al4 V and 316L SS in femoral neck fracture fixation, comparative data on their biomechanical performance and corrosion behavior under torsional loading remain limited. This study focuses on these two clinically relevant materials, evaluating their mechanical behavior and corrosion susceptibility. Finite-element analysis was performed to simulate torsional stress, while SEM and EDS analyses examined microstructural characteristics influencing performance. The results showed nearly identical deformation for both materials, with 316L exhibiting higher screw stress but lower stress at the fracture line, leading to reduced micromotions. Ti6Al4 V offered superior corrosion resistance and long-term biocompatibility. These findings provide quantitative insights for implant selection, supporting designs that balance immediate mechanical stability with favorable long-term material performance. Further research is needed to identify the most effective implant design and material selection to balance immediate fixation and support desirable bone regeneration
An Artificial Intelligence System for Staging the Spheno-Occipital Synchondrosis
No full textObjective: The aim of this study was to develop, test and validate automated interpretable deep learning algorithms for the assessment and classification of the spheno-occipital synchondrosis (SOS) fusion stages from a cone beam computed tomography (CBCT). Study Design: The sample consisted of 723 CBCT scans of orthodontic patients from private practices in the midwestern United States. The SOS fusion stages were classified by two orthodontists and an oral and maxillofacial radiologist. The advanced deep learning models employed consisted of ResNet, EfficientNet and ConvNeXt. Additionally, a new attention-based model, ConvNeXt + Conv Attention, was developed to enhance classification accuracy by integrating attention mechanisms for capturing subtle medical imaging features. Laslty, YOLOv11 was integrated for fully-automated region detection and segmentation. Results: ConvNeXt + Conv Attention outperformed the other models and achieved a 88.94% accuracy with manual cropping and 82.49% accuracy in a fully automated workflow. Conclusion: This study introduces a novel artificial intelligence-based pipeline that reliably automates the classification of the SOS fusion stages using advanced deep learning models, with the highest accuracy achieved by ConvNext + Conv Attention. These models enhance the efficiency, scalability and consistency of SOS staging while minimising manual intervention from the clinician, underscoring the potential for AI-driven solutions in orthodontics and clinical workflows
Validity and reliability of modified box and block test and targeted box and block test in patients with stroke
No full textIntroduction: The Box and Block Test (BBT) is commonly used to evaluate unilateral manual dexterity in patients with stroke. While the BBT is quick and simple to use, it causes large measurement variability because the administration is not standardized. In this study, we evaluated the validity and reliability of the modified BBT (mBBT) and a targeted BBT (tBBT) in patients with stroke. Method: Our participants were 50 patients with stroke. We evaluated the criterion validity of the mBBT and tBBT through its correlations with scores on the 9-Hole Peg Test (9-HPT), the Fugl-Meyer Assessment-Upper Extremity test (FMA-UE) and BBT. We analyzed the reliability with test-retest reliability. Results: The mBBT was strongly and positively correlated with the 9 HPT (r = 0.823), and strongly negatively correlated the BBT (r = −0.870) for the more-affected hand (p < 0.001). The tBBT was also strongly positively correlated with the 9 HPT (r = 0.913), and the BBT (r = −0.889) for the more-affected hand (p < 0.001). The mBBT was moderately positively correlated with the FMA-UE (r = −0.574), and the tBBT was moderately correlated with (r = −0.604) for the more-affected hand (p < 0.001). The ICCs for the mBBT and the tBBT ranged from 0.86 to 0.97 for the more-affected hand. Conclusion: In this sample, the mBBT and tBBT appeared to be valid and reliable for patients with stroke
-{DIK+İYELİK+DA} VE -{DIK+İYELİK+ ZAMAN} YAPILARININ KULLANIM SIKLIKLARI ÜZERİNE DERLEM TABANLI BİR ARAŞTIRMA
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Examination of the Effect of Lumbar Disc Hernia on Atrophy of Paravertebral Muscles
No full textAim: Present study aimed to evaluate the effect of the presence of lumbar disc herniation on the atrophy of the paravertebral muscles in patients who were admitted to the hospital with the complaint of lumbalgia. Material and Methods: Following the approval of Aydýn Adnan Menderes University clinical studies ethics committee, MRI images of adult patients who applied to our hospital with the complaint of lumbalgia between December 1, 2020 and June 1, 2021 began to be examined. Patients with structural deformities, lumbar region neoplasms, infectious diseases, vertebral fractures and lumbar region surgery were not included in the study. As a result of the examinations, 443 patients with low back pain and lumbar disc herniation formed the case group. The control group consisted of 135 patients with low back pain but without lumbar disc herniation. The patients were evaluated in terms of gender, age, number of lumbar disc herniations, lumbar disc herniation level, lumbar disc herniation degree, surface measurements of paravertebral muscles and atrophy of paravertebral muscles. Results and Conclusion: As a result of our study, statistical significance was found between atrophy of m.multifidus lumborum and m.quadratus lumborum muscles and LDH. In addition, the relationship of age and gender factors with LDH, lumbar disc degeneration and atrophy of paravertebral muscles were examined
