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Öğe Can we use the contralateral glenoid cavity as a reference for the measurement of glenoid cavity bone loss in anterior shoulder instability?. A comparative analysis of 3D CT measurements in healthy subjects(Soc Chilena Anatomia, 2018) Köse, Özkan; Canbora, Mehmet Kerem; Köseoğlu, Hasan; Kılıçoğlu, Gamze; Turan, Adil; Yüksel, Yavuz; Acar, BaverThe purpose of this study was to compare the glenoid cavity measurements in healthy subjects. 100 adult subjects without shoulder pathology who had pulmonary computed tomography for any reason, were included in the study. Lung CT images were three-dimensionally rendered and glenoid cavity enface images were obtained. On these images, the glenoid cavity superior-inferior long axis and anterior-posterior equator, as well as the equatorial anterior and posterior radii, were measured. Dominant and non-dominant glenoid cavity measurements were compared using the t-test in dependent groups. The long axis of the dominant glenoid cavity was 38.15 +/- 3.5 mm, whereas it was 37.87 +/- 3.3 mm on the non-dominant side (p = 0.068). The mean width of the glenoid cavity was 28.60 +/- 3.3 mm in dominant glenoids cavities and 28.00 +/- 2.9 mm in the non-dominant side (p = 0.0001). The equatorial anterior and posterior radii were significantly different between the two sides (p = 0.010, p = 0.001, respectively). The ratio of length to equator was different between the two sides (p = 0.012). The difference in equatorial lengths was 0.98 +/- 0.8 mm (range, 0-4.2 mm). The mean difference between the long axis of the glenoid cavity was 1.2 +/- 0.9 mm (range 0-4.6 mm). The equator on 69 individuals was larger on the dominant side. Glenoid cavity long axis was larger on the dominant side of 61 individuals. Glenoids cavities are not equal and not symmetrical to each other or influenced by hand dominancy. Measurements based on the assumption that both glenoids cavities are equal may be misleading.Öğe DIFFERENCES OF RIB FRACTURES IN BLUNT TRAUMA PATIENTS ACCORDING TO AGE AND GENDER: A COMPUTED TOMOGRAPHY STUDY(2023) Torun, Ebru; Yüksel, YavuzObjective To investigate the difference between rib fractures according to age and sex in blunt trauma patients. Material and Method The patients were classified into 3 age groups: Group-1:18-44 years, Group-2:45-69 years, and Group-3:70 years or more. Rib fractures were classified into 3 groups based on their level on the coronal plane (upper (1st-4th ribs), medium (5th- 8th ribs) and lower (9th-12th ribs)) and axial plane (anterior, lateral and posterior). Results Rib fractures were found to be more common in male (69%) to female (53%) (p=0.002). The incidence of fractures was seen to increase with age (p=0.001; r=615). Rib fractures were most commonly found in the middle ribs (5th-8th ribs) in all-age-groups. The incidence of fractures in the upper ribs was significantly lower in the advanced age than the other age groups (p=0.002). Fractures were least commonly found in the anterior part of the rib in all age groups. Rib fractures were observed at a higher rate in the lateral part in young adults unlike the other age groups (p=0.001). A significant difference was found between the age groups in favor of young adults (group 1) in terms of the presence of parenchymal contusion without rib fracture (p=0.014). Conclusion Rib fracture was seen at a higher rate in male than female in blunt thoracic trauma patients. Fractures possibility of in the upper rib structures is lower in the advanced age group. Unlike other groups, in young people, a higher rate of fractures was detected in the lateral part of the costa. One should be aware of the possibility of parenchymal contusion without a rib fracture in the young age group.Öğe Giant colonic lipoma causing intussusception: CT scan and clinical findings(African Field Epidemiology Network-Afenet, 2019) Özen, Özkan; Güler, Yılmaz; Yüksel, YavuzColonic lipomas are uncommon and usually asymptomatic tumors. A 30-year-old woman with abdominal pain lasting 10 days was admitted to the surgical clinic. Her physical examination revealed sensitivity on the right upper quadrant and her bowel sounds were normal. A lesion and invagination findings in the colon were found in the ultrasound examination and CT was performed. CT scan revealed a lipoma and invagination in the colon and the patient has undergone surgery. Pathological diagnosis of the lesion was reported as submucosallipoma. In this case report, we present clinical and radiological findings of a submucosal colonic lipoma causing intussusception.Öğe Perforation of terminal ileum by a toothpick(Ma Healthcare Ltd, 2020) Özen, Özkan; Torun, Ebru; Yüksel, Yavuz; Ergün, Tarkan; Başaran, Ismail[No abstract available]Öğe Posterior kondiler ve mastoid emisser kanalların morfolojik ve morfometrik özelliklerinin radyolojik değerlendirilmesi(2019) Özen, Özkan; Yüksel, YavuzAmaç: Emisser venler kafatası deliklerden geçerek dural venöz sinüsler ile ekstrakranial venöz sistem arasında bağlantı kurarlar. Ameliyat öncesi posterior fossa emisser venlerin tanımlanması önemlidir çünkü bu venler cerrahi sırasında komplikasyonlara neden olabilirler. Biz bu çalışmamızda bilgisayarlı tomografi ile mastoid emisser ve posterior kondiler kanalların görülme oranlarını, bu kanal çapları arasında istatiksel korelasyon olup olmadığını araştırdık. Gereç ve Yöntem: Çalışmamızda hastanemiz PACS arşivindeki 100 hastanın temporal BT si retrospektif olarak değerlendirildi. Mastoid emisser kanalın ve aksesuar mastoid emisser kanalın olup olmadığı incelendi. Mastoid foramen, mastoid kanal genişlikleri değerlendirildi, posterior kondiler kanalın olup olmadığı ve genişliği incelendi. Bulgular: Sağ mastoid kanal 16, sol mastoid kanal 13, sağ posterior kondiler kanal 19, sol kondiler kanal 17 bireyde yoktu. Mastoid kanal çapı ortalamaları sağda 1,3 ±0,8 mm solda 1,3 ±07 mm, posterior kondiler kanal çapı ortalamaları sağda 3 ±1,5 mm solda 2,9 ±1,3 mm idi. Mastoid aksesuar kanal sağda 24 solda ise 25 hastada mevcuttu. Aksesuar mastoid kanalı olmayan ve olanlarda her iki tarafta mastoid kanal çapı ile posterior kondiler kanal çapı arasında anlamlı korelasyon yoktu. Sonuç: Cerrahi komplikasyonlardan azaltmak için anatomik bilgi ve kranial venöz drenaj fizyolojisinin anlaşılması önemlidir. Temporal bilgisayarlı tomografi bu kanalları göstermede oldukça başarılıdır.Öğe Recurrent stump appendicitis(W.B. Saunders, 2020) Yüksel, Yavuz; Ergün, Tarkan; Torun, Ebru; Özen, ÖzkanAcute appendicitis is one of the most common reasons for abdominal surgery. Stump appendicitis, one of the rare complications of appendicitis surgery, is an inflammation that develops in the remaining part of the appendix following surgery and occurs at a rate of 1/50.000 in cases with appendectomy. Although patients manifest the same findings as those with acute appendicitis on physical examination and laboratory tests, the history of previous appendectomy may cause delays in diagnosis. Complications such as perforation and peritonitis can develop if an early diagnosis cannot be made. In this article, we present the first case of recurrent stump appendicitis reported in the literature as far as we are aware. © 2020 Elsevier Inc.Öğe Relationship between cervical posterior subcutaneous fat tissue thickness and the presence and degree of cervical intervertebral disc degeneration(2022) Yüksel, Yavuz; Ergün, Tarkan; Torun, EbruObjective: This study aimed to investigate the relationship between cervical region subcutaneous fat tissue thickness and the presence and level of cervical intervertebral disc degeneration (IVDD). Methods: Magnetic resonance imaging examinations of patients referred to our clinic for the investigation of neck pain were evaluated retrospectively. A total of 300 women aged 30–40 years were included in the study. The presence and level of IVDD were evaluated for each patient. The cervical subcutaneous fat tissue thickness was also measured. Results: IVDD was determined as Grade 1 for 88 patients (29.3%), Grade 2 for 56 patients (18.6%), Grade 3 for 82 patients (27.3%), Grade 4 for 60 patients (20%), and Grade 5 for 14 patients (4.6%). Subcutaneous fat tissue thickness was higher in patients with cervical disc degeneration (mean: 6.28±0.19mm) than in those without cervical disc degeneration (mean: 5.33±0.18mm) (P = .001). There was a positive correlation between the degree of cervical disc degeneration and subcutaneous fat tissue thickness ( = 0.001, r = 0.245). Conclusion: An increase in the cervical fat tissue thickness is a predisposing factor for the development of degeneration of the intervertebral disc. There is a close relationship between subcutaneous fat tissue thickness and the degree of degeneration. Abbreviations: BMI = body mass index, IL-1 = interleukin-1, IVDD = intervertebral disc degeneration, MRI = magnetic resonance imaging, TNF = tumor necrosis factor, WI = weighted images.Öğe Reliability and Agreement of Four Radiographic Methods for Measuring Posterior Tibial Slope on Lateral Knee Radiographs(Süleyman Demirel University, 2025) Yüksel, Yavuz; Köse, ÖzkanObjective: The posterior tibial slope (PTS) is a critical anatomical parameter influencing knee biomechanics and ligamentous stability. Despite its clinical relevance, no consensus exists on the most reliable radiographic method for measuring PTS. This study aimed to evaluate the inter- and intra-observer reliability and agreement of four radiographic techniques for PTS measurement on standard lateral knee radiographs. Material and Method: A retrospective analysis was conducted on 70 adult patients with high-quality true lateral knee radiographs. Four commonly used methods were applied to measure the PTS: the fibular shaft axis (FSA), anterior cortical line (ACL), posterior cortical line (PCL), and proximal anatomical axis (PAA). Two experienced observers performed all measurements twice, 15 days apart, using a standardized protocol. Intraclass correlation coefficients (ICCs) were calculated to assess reliability, and Pearson correlation coefficients were used to evaluate the agreement between measurements and demographic characteristics. Results: All four methods showed excellent intra-observer reliability (ICC, range 0.916–0.975) and good-to-excellent inter-observer reliability (ICC, range 0.813–0.968). Mean PTS values differed by method: ACL 12.4° ± 3.2°, PCL 7.2° ± 3.1°, FSA 10.1° ± 3.2°, PAA 9.6° ± 3.0° (p = 0.001). Pairwise correlations were strong for all methods (p < 0.001). PTS showed no significant association with age, sex, height, weight, or body mass index. Conclusions: Although reliability was high for all techniques, differences in absolute values indicate that methods are not interchangeable. Standardized reference axes should be specified to ensure consistent reporting across clinical and research settings.Öğe Retroperitoneal teratoma with secondary infection(Coll Physicians & Surgeons Pakistan, 2019) Yüksel, Yavuz; Özen, Özkan; Kuru, AslıhanTeratomas are germ cell tumors arising from the embryonic germ layers. Since they originate from the germ cells, they can be found in the gonadal, sacrococcygeal, mediastinal, intracranial, retroperitoneal, and cervical regions. In this case report, a 4-year boy, brought to the hospital due to abdominal pain and fever, was diagnosed as a large and infected peritoneal teratoma by contrast-enhanced abdominal computed tomography (CT) along with abdominal CT and operative findings.Öğe The relationship between quadriceps fat pad syndrome and patellofemoral morphology: a case-control study(2021) Yüksel, Yavuz; Ergün, Tarkan; Torun, Ebru; Ünal, Melih; Sonnow, Lena; Köse, ÖzkanBackground The purpose of this prospective case-control study is to investigate the relationship between quadriceps fat pad syndrome (QFPS) and patellofemoral morphology. Materials and methods Twenty-two patients with QFPS and 22 age- and gender-matched healthy volunteers were included. The diagnosis of QFPS was supported both clinically and radiologically. On magnetic resonance imaging (MRI), patellofemoral morphology was evaluated with 13 radiological measurements including trochlear sulcus angle, trochlear sulcus depth, trochlear facet asymmetry, trochlear condyle asymmetry, lateral trochlear inclination angle, patellar translation, tibial tubercle-trochlear groove (TT-TG) distance, Insall-Salvati ratio, patellotrochlear index, patellar tilt, the ratio between lateral and medial facet lengths, interfacet angle, and quadriceps tendon thickness. The mean of measurements was compared between groups using the Mann-Whitney U test. Results There were 22 patients (12 male, 10 female) with mean age of 30.81 +/- 1.41 (range 19-38) years in group I and 22 patients (12 male, 10 female) with mean age of 31.13 +/- 1.31 (range 19-39) years in group II. The mean age and the gender distribution were statistically similar between groups (p = 0.845, p = 1, respectively). All measured values except for patellar tilt (p = 0.038) and TT-TG distance (p = 0.004) were similar (p > 0.05 for the other variables). However, all of the measured variables were within the normal range. Conclusions QFPS may not be associated with anatomical variations of the patellofemoral joint. Further studies are required to understand the etiology and risk factors.Öğe The relationship between the flexor and extensor muscle areas and the presence and degree of intervertebral disc degeneration in the cervical region(2022) Yüksel, Yavuz; Ergün, Hakan; Torun, EbruBackground: This study aimed to investigate the relationship between the presence and degree of cervical intervertebral disc degeneration (IVDD) and the cervical region muscle areas. Methods: The magnetic resonance imaging (MRI) examination of the patients who were sent to our clinic for investigation of neck pain between 2019 and 2020 years were evaluated retrospectively. 143 Turkish women patients between 30 and 40 ages were examined in the study. The presence and degree of IVDD was evaluated for each patient. The areas of the cervical flexor and extensor paravertebral muscles were measured. Results: No cervical disc degeneration was present in 44 (30.76%) patients (grade 1). The cervical intervertebral disc degeneration was grade 2 in 28 (19.58%), grade-3 in 41 (28.67%), and grade 4 in 30 (20.97%) patients. In early stage degeneration (grade 2), an increase was observed in the area of all cervical paravertebral flexor and extensor muscles examined. As the degree of degeneration increased (grades 3 and 4), a decrease was observed in the areas of all muscles. Statistical significance was found for musculus (m) sternocleidomastoideus, m. levator scapulae, m. splenius capitis, m. semispinalis capitis, and m. multifidus muscles (P=.009, r=-0.261; P=.014, r=-0.248; P=.008, r=-0.267; P=.002, r=-0.307; P=.028, r=-0.222, respectively). Conclusions: IVDD is common in middle-aged females with neck pain. An increase in muscles areas is observed in the early stages of cervical disc degeneration but progressive decrease develops in all cervical paraspinal muscles areas as the degree of disc degeneration increases.Öğe The Relationship Between the Morphology of the Shoulder Joint and Supraspinatus Tendinosis: An MRI Study(2023) Yüksel, Yavuz; Torun, EbruObjective: To examine the relationship between the morphological parameters of the shoulder joint and supraspinatus tendinosis. Methods: A patient group (n=44) was formed from patients diagnosed with supraspinatus tendinosis from medical records and magnetic resonance imaging (MRI) findings. A control group (n=44) was formed by randomly selecting people of similar age and gender to the patient group, who met the exclusion criteria for the patient group, and had normal rotator cuffs on MRI. Coracoacromial ligament thickness (CLT), acromial angle [(AA), delta angle], acromioglenoid angle (AGA), supraspinatus fossa (SFA) glenoid angle on the axial (SGAX) views, SFA glenoid angle on the anterior-posterior (SGAP) views, acromiohumeral distance (AHD), and coracoacromial arch angle (CAA) were measured on MRI images in both groups. Morphological differences between groups were compared using Student’s t-test. Results: Patient group had statistically significant higher CLT and lower AHD values (0.73±0.33 mm and 6.55±0.97 mm, respectively; p=0.007) than control group (1.02±0.53 mm and 7.45±1.61 mm, respectively; p=0.006). Also, there were statistically significant differences between the groups in terms of acromial angle (3.09±5.04° for patient group and 7.9±8.1° for control group; p=0.006). However, there were no statistically significant differences between the groups for AGA, SGAX, SGAP, and CAA (p>0.05). Conclusion: These findings suggest that CLT, AA, and AHD are important predisposing anatomical factors for developing supraspinatus tendinosis.
