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    Anatomical Study of Bile Ducts by Magnetic Resonance Cholangiopancreatography
    (Galenos Publ House, 2025) Dikici, Tahir Fatih; Fazliogullari, Zeliha; Ozcan, Ayse Gamze; Koplay, Mustafa; Karabulut, Ahmet Kagan; Uysal, Ismihan Ilknur; Unver Dogan, Nadire
    Objective: A variety of anatomical variations in the intrahepatic and extrahepatic bile ducts (BD) may cause different problems during surgical intervention. Therefore, the objective of this study was to investigate the prevalence and types of anatomical variations in BD in normal patients. Methods: The present study evaluated magnetic resonance cholangiopancreatography (MRCP) images of 303 patients (146 men, 157 women). The objective of this study was to evaluate variations in the intrahepatic and extrahepatic BD and anatomical variations in the gallbladder. The biliary confluence angle, diameter of the common BD prior to its union with the pancreatic duct, diameter of the duct formed by their junction, and length of the short cystic duct (CD) were also evaluated. Results: In this study, anomaly of the right posterior duct opening to the left hepatic duct (HD) was found in 12 cases (4%), trifurcation variation in 26 cases (8.6%), and abnormal variation of the aberrant right HD opening to the common HD in 15 cases (5%). Corresponding to the CD, a long CD variation was found in 20 cases (6.6%) and a short cystic channel variation in 7 cases (2.3%). In addition, a negative correlation was found between age and angle of confluence. A significant correlation was found between long CD variation and stone formation. Conclusion: Anatomic investigation of the BD using the non-invasive MRCP technique and the definition of variations are of great importance in terms of assisting surgical planning, minimizing the likelihood of complications during operations, and facilitating transplantation surgery.
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    Mechanical properties of muscles and tendons in asymptomatic individuals with generalized joint hypermobility
    (2021) Taş, Serkan; Dikici, Tahir Fatih; Aktaş, A.; Aracı, Ayça
    Background. The purpose of the present study was to investigate changes in mechanical properties of muscles and tendons in asymptomatic individuals with generalized joint hypermobility (GJH). Methods. This cross-sectional study was conducted in 126 participants aged 19-40 years. The Beighton score was used to determine whether the participants had GJH. An experienced physiotherapist screened all participants using the Beighton score to inquire about the presence of GJH. At the end of the clinical evaluations, 36 asymptomatic participants with GJH (age, 24.6 ± 6.1 years) and 34 age-and sex-matched controls (age, 24.6 ± 6.8 years) were included in the present study. The oscillation frequency (indicator of tone), dynamic stiffness (indicator of stiffness), and logarithmic decrement (related to elasticity) of the medial and lateral gastrocnemius, biceps brachii, and brachioradialis muscles, and the Achilles and patellar tendons were measured with a portable myotonometer (MyotonPRO, Myoton AS, Tallinn, Estonia). Results. The oscillation frequency, dynamic stiffness, and logarithmic decrement of the biceps brachii, brachioradialis, and medial and lateral gastrocnemius muscles were similar in GJH and control groups (p > 0.05). In addition, there was no significant difference between groups in terms of the oscillation frequency, dynamic stiffness, and logarithmic decrement of the Achilles and patellar tendons (p > 0.05). Conclusions. The elasticity, stiffness, and/or tone of the biceps brachii, brachioradialis, and medial and lateral gastrocnemius muscles were similar in individuals with and without GJH. The results obtained suggest that the mechanical properties of muscles and tendons are not associated with GJH.
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    THE RELATIONSHIP BETWEEN PES PLANUS SEVERITY AND LOWER EXTREMITY FUNCTIONAL PERFORMANCE IN YOUNG ADULTS
    (Turkey Assoc Physiotherapists, 2023) Dikici, Tahir Fatih; Demirdel, Ertugrul
    Purpose: To examine the relationship between pes planus severity and lower extremity functional performance in young adults with pes planus. Methods: Volunteers with asymptomatic flexible pes planus aged between 18-25 years were included, and 53 (32 Females) individuals with a mean age of 20.19 +/- 1.93 years were evaluated in this study. Navicular drop (ND) test was used to decide the presence and severity of pes planus. Balance and jump tests were used for assessing lower extremity functional performance. Balance performance was evaluated with the Y balance test and jump performance was evaluated with the single leg jump test (SLJ) using the Opto Jump system (Microgate, Bolzano, Italy). Results: On the dominant side, a negative and weak correlation was found between ND values and balance results in anterior and posteromedial directions (p=0.014; r=-0.336, p=0.046; r=-0.276, respectively). On the non-dominant side, a negative and weak correlation was found between ND values and balance results in the anterior direction (p=0.040; r=-0.284). There was no correlation between ND values and SLJ heights in both extremities (p>0.05). Conclusions: In young adults with asymptomatic flexible pes planus, insufficient dynamic balance performance was observed as the severity of pes planus increased, but the severity of pes planus did not affect vertical jump distance. This result suggests that interventions for pes planus severity may also have an effect on balance performance.