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    Evaluation of the anterior shoulder instability using ultrasound shear wave elastography
    (Turkish Joint Diseases Foundation, 2023) Sarıkaya, Pelin Zeynep Bekin; Sarıkaya, Baran; Bozkurt, Celal; Dere, Osman; Batur, Elif Balevi; Duşak, Abdurrahim
    Objectives: This study aims to evaluate the soft tissue stiffness which has a prominent role in shoulder instability using ultrasound (US) shear wave elastography (SWE) and to compare the results with healthy shoulders. Patients and methods: Between December 2018 and January 2020, a total of 33 male patients (mean age: 26 +/- 4.3 years; range, 18 to 35 years) who underwent arthroscopic repair for traumatic isolated anterior glenohumeral instability were included in this prospective study. The shoulder girdle was evaluated with US SWE in patients with traumatic anterior instability. Deltoid (D), supraspinatus (SS), infraspinatus (IS), subscapularis (SSC), and long head of biceps (LHB) tendons forming the shoulder girdle and anterior labrum (L) were evaluated with SWE. The elasticity and velocity of the tissues were quantitatively measured. The operated shoulders of 33 patients due to isolated traumatic anterior instability were named Group 1, while the healthy shoulders of these patients were named Group 2. Thirty volunteers with healthy shoulders were considered as the control group (Group 3, n=30). Results: All three groups were compared in terms of SS, D, LHB, and SSC tendon velocity and elasticity; however, no statistically significant difference was observed among the groups (p < 0.05). The anterior labrum of these three groups did not significantly differ in terms of SWE measurements (p < 0.05). Conclusion: The stiffness of shoulder girdle muscle tendons and labrum measured with US SWE does not constitute a risk factor for traumatic anterior shoulder instability.
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    The evaluation of vascular flow in clubfoot: a resistive index and peak systolic velocity study
    (Lippincott Williams & Wilkins, 2024) Bozkurt, Celal; Bekin Sarikaya, Pelin Zeynep; Karayol, Sunay Sibel; Sarikaya, Baran; Sipahioglu, Serkan; Kaptan, Ahmet Yigit; Orhan, Ozlem
    Resistive index (RI) and peak systolic velocity (PSV) are important Color doppler ultrasonography (CDU) parameters indicating the microcirculation and flow velocity in tissues. We aim to determine the changes in vascular flow characteristics in clubfoot after Ponseti treatment. There were three groups: the clubfoot group, the healthy group (the unaffected feet with unilateral deformities) and the control group. The Pirani severity scoring and CDU examinations of the foot were performed at initial admission and the 6th-month follow-up after Ponseti treatment. A total of 34 feet of 24 patients were included in the study. The mean age at initial treatment was 20.9 +/- 22.5 days. The RI and PSV values of the clubfeet and the healthy group were similar. Resistive index values were significantly lower, and PSV values were significantly higher in the control group. After Ponseti treatment, only RI of the dorsalis pedis artery decreased, but PSV increased for all of the arteries. Recurrence of the deformity deteriorates the improvement in vascular development. Resistive index and PSV values were not related to the initial severity of the deformity. The RI values were higher, and PSV values were lower in clubfoot patients compared with the normal control group. Vascular pathology is a component of clubfoot, and treatment success improves vascular development. The improvement of microcirculation and blood flow velocity together was detected only in the dorsalis pedis artery. The effect of vascular flow change on prognosis was not detected.