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    Achilles Tendon, Patellar Tendon, and Femoral Cartilage Thickness in Control vs Asymptomatic Flatfoot Young Adults
    (Sage Publications Inc, 2023) Tas, Serkan; Aktas, Arda; Dikici, Tahir Fatih; Cekok, Fatma Kubra
    Background: Changes in lower extremity alignment in individuals with flatfoot may be associated with differences in morphology of the tendons or cartilage in lower extremities. The purpose of the present study was to investigate the potential association of flatfoot with the morphology of the Achilles tendon, patellar tendon, and femoral cartilage. Methods: This study was conducted with 40 participants with flatfoot (28 females, 12 males) and 40 participants with a normal foot posture (28 females, 12 males). The thickness of the Achilles tendon (at points 2 and 3 cm proximal to the superior aspect of the calcaneus), patellar tendon (at the inferior pole of the patella and 1 cm proximal of the inferior pole of the patella), and femoral cartilage (at the intercondylar area, medial condyle, and lateral condyle) was measured by an ultrasonography device. Results: The Achilles tendon thickness at 2 cm (P = .009) and 3 cm (P = .010) proximal of the superior aspect of the calcaneus was on average 4% to 6% lower in individuals with flatfoot compared with controls. The cartilage thickness at the intercondylar area (P = .005) and medial condyle (P = .018) was on average 8% to 12% greater in individuals with flatfoot; however, the cartilage thickness at the lateral condyle and patellar tendon thickness was similar in both groups. Conclusion: The results obtained suggest that foot posture is associated with the morphology of the Achilles tendon and femoral cartilage.
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    Muscle and tendon stiffness of lower extremity in older adults with fall history: Stiffness effect on physical performance and fall risk
    (Mosby-Elsevier, 2024) Cekok, Fatma Kubra; Tas, Serkan; Aktas, Arda
    Changes in muscle and tendon stiffness may lead to falls in older adults by affecting joint stability and muscle function. This study aims to investigate the changes in stiffness in lower extremity muscles and tendons in the older adults with a fall history. A cross-sectional research design was followed. 25 older adults with a fall history and 26 older adults without fall history were recruited study. Stiffness of the lower extremity muscles and tendons was measured using a MyotonPRO device. Balance and functional ability of the participants were evaluated. The stiffness of all the selected muscles and tendon was lower in the older adults with a history of fall compared to controls (p<0.05). The obtained results suggest the decrease in the stiffness of the lower extremity muscles and tendon may negatively affect muscle function and joint stability/ control, and it may increase the predisposition to falling in older adults. (c) 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.