Abdullah Soylu - Academia.edu (original) (raw)

Papers by Abdullah Soylu

Research paper thumbnail of Shear Wave Elastography Is a Reliable and Repeatable Method for Measuring the Elastic Modulus of the Rectus Femoris Muscle and Patellar Tendon

Journal of Ultrasound in Medicine, 2017

Objectives-The purpose of this study was to determine intraobserver, interobserver, and inter-day... more Objectives-The purpose of this study was to determine intraobserver, interobserver, and inter-day reliability levels for stiffness measurements of the patellar tendon and rectus femoris muscle using shear wave elastography (SWE). Methods-This study was conducted on 12 healthy male individuals. Two examiners measured mean shear wave velocity values of the patellar tendons and rectus femoris muscles of both extremities using a 9L4 (4-9 MHz) transducer and an Acuson S3000 ultrasound system (Siemens Medical Solutions, Mountain View, CA). The elasticity images were acquired by the Virtual Touch tissue imaging quantification technique (Siemens Medical Solutions). Measurements were repeated 20 minutes and 1 week after the first measurements. The reliability of SWE measurements was assessed by means of the intraclass correlation coefficient (ICC). Results-The 12 participants ranged in age from 19 to 33 years (mean age 6 SD, 25.33 6 4.56 years). For the patellar tendon stiffness measurements with SWE, it was found that intraobserver reliability (ICC, 0.91-0.92) and interday reliability (ICC, 0.81-0.83) were excellent, and interobserver reliability (ICC, 0.71) was good. For the rectus femoris muscle stiffness measurements with SWE, it was found that the intraobserver reliability (ICC, 0.93-0.94), interday reliability (ICC, 0.81-0.91), and interobserver reliability (ICC, 0.95) were perfect. Conclusions-Shear wave elastography using the Virtual Touch tissue imaging quantification technique is a reliable and repeatable technique for patellar tendon and rectus femoris stiffness measurements according to intraobserver, interday, and interobserver ICC values.

Research paper thumbnail of Patellar tendon mechanical properties change with gender, body mass index and quadriceps femoris muscle strength

Acta Orthopaedica et Traumatologica Turcica, 2017

Objective: The purpose of this study is to assess the effect and correlation of gender, body mass... more Objective: The purpose of this study is to assess the effect and correlation of gender, body mass index (BMI) and quadriceps femoris (QF) muscle strength on patellar tendon (PT) thickness and stiffness in healthy sedentary individuals. Methods: This study was carried out with 67 (36 female, 31 male) healthy sedentary individuals between the ages of 18e44 (28.0 ± 7.5 years). The individuals included in the study were divided into two groups according to their gender and BMI (18.5 < BMI < 25 and 25 < BMI). The body composition was determined with Tanita Body Composition Analyser. PT thickness and stiffness was measured with ACUSON S3000 Ultrasonography Device using 9L4 ultrasonography probe. QF concentric muscle strength of the individuals was measured with Biodex ® System 4 Dynamometer at 60 /sec angular speed. Results: It was found that PT stiffness was higher in males compared to females (p < 0.001). It was found that PT stiffness was lower in obese individuals compared to individuals with normal weight (p ¼ 0.017). A negative and weak correlation was found between BMI and PT stiffness (r ¼ À0.26, p ¼ 0.032), whereas a negative and moderate correlation was found between fat percentage and PT stiffness (r ¼ À0.50, p < 0.001). A moderate correlation was found between BMI and PT thickness (r ¼ 0.54, p < 0.001). It was found that peak torque at 60 /sec angular speed had a moderate correlation with PT stiffness (r ¼ 0.44, p < 0.001) and PT thickness (r ¼ 0.45, p < 0.001). Conclusions: PT stiffness is correlated and affected by gender, BMI and QF muscle strength whereas PT thickness is correlated and affected only to BMI and QF muscle strength.

Research paper thumbnail of Shear Wave Elastography Is a Reliable and Repeatable Method for Measuring the Elastic Modulus of the Rectus Femoris Muscle and Patellar Tendon

Journal of Ultrasound in Medicine, 2017

Objectives-The purpose of this study was to determine intraobserver, interobserver, and inter-day... more Objectives-The purpose of this study was to determine intraobserver, interobserver, and inter-day reliability levels for stiffness measurements of the patellar tendon and rectus femoris muscle using shear wave elastography (SWE). Methods-This study was conducted on 12 healthy male individuals. Two examiners measured mean shear wave velocity values of the patellar tendons and rectus femoris muscles of both extremities using a 9L4 (4-9 MHz) transducer and an Acuson S3000 ultrasound system (Siemens Medical Solutions, Mountain View, CA). The elasticity images were acquired by the Virtual Touch tissue imaging quantification technique (Siemens Medical Solutions). Measurements were repeated 20 minutes and 1 week after the first measurements. The reliability of SWE measurements was assessed by means of the intraclass correlation coefficient (ICC). Results-The 12 participants ranged in age from 19 to 33 years (mean age 6 SD, 25.33 6 4.56 years). For the patellar tendon stiffness measurements with SWE, it was found that intraobserver reliability (ICC, 0.91-0.92) and interday reliability (ICC, 0.81-0.83) were excellent, and interobserver reliability (ICC, 0.71) was good. For the rectus femoris muscle stiffness measurements with SWE, it was found that the intraobserver reliability (ICC, 0.93-0.94), interday reliability (ICC, 0.81-0.91), and interobserver reliability (ICC, 0.95) were perfect. Conclusions-Shear wave elastography using the Virtual Touch tissue imaging quantification technique is a reliable and repeatable technique for patellar tendon and rectus femoris stiffness measurements according to intraobserver, interday, and interobserver ICC values.

Research paper thumbnail of Patellar tendon mechanical properties change with gender, body mass index and quadriceps femoris muscle strength

Acta Orthopaedica et Traumatologica Turcica, 2017

Objective: The purpose of this study is to assess the effect and correlation of gender, body mass... more Objective: The purpose of this study is to assess the effect and correlation of gender, body mass index (BMI) and quadriceps femoris (QF) muscle strength on patellar tendon (PT) thickness and stiffness in healthy sedentary individuals. Methods: This study was carried out with 67 (36 female, 31 male) healthy sedentary individuals between the ages of 18e44 (28.0 ± 7.5 years). The individuals included in the study were divided into two groups according to their gender and BMI (18.5 < BMI < 25 and 25 < BMI). The body composition was determined with Tanita Body Composition Analyser. PT thickness and stiffness was measured with ACUSON S3000 Ultrasonography Device using 9L4 ultrasonography probe. QF concentric muscle strength of the individuals was measured with Biodex ® System 4 Dynamometer at 60 /sec angular speed. Results: It was found that PT stiffness was higher in males compared to females (p < 0.001). It was found that PT stiffness was lower in obese individuals compared to individuals with normal weight (p ¼ 0.017). A negative and weak correlation was found between BMI and PT stiffness (r ¼ À0.26, p ¼ 0.032), whereas a negative and moderate correlation was found between fat percentage and PT stiffness (r ¼ À0.50, p < 0.001). A moderate correlation was found between BMI and PT thickness (r ¼ 0.54, p < 0.001). It was found that peak torque at 60 /sec angular speed had a moderate correlation with PT stiffness (r ¼ 0.44, p < 0.001) and PT thickness (r ¼ 0.45, p < 0.001). Conclusions: PT stiffness is correlated and affected by gender, BMI and QF muscle strength whereas PT thickness is correlated and affected only to BMI and QF muscle strength.