scholarly journals Potential of Using Shear Wave Elastography in the Clinical Evaluation and Monitoring of Changes in Masseter Muscle Stiffness

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Cyprian Olchowy ◽  
Mieszko Więckiewicz ◽  
Luca Maria Sconfienza ◽  
Mateusz Łasecki ◽  
Piotr Seweryn ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Shear Wave ◽  
Masseter Muscle ◽  
Severe Pain ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Sensitive Tool ◽  
Massage Treatment ◽  
The Mean ◽  
Evaluation And Monitoring

The study aimed to evaluate masseter muscle stiffness in adult healthy volunteers referred to a massage treatment and also to investigate whether shear-wave elastography can be used to monitor the effect of massage on the masseter muscle. The study included 21 healthy volunteers, who were subjected to a 30-minute massage of the masseter muscle. Muscle stiffness was measured by shear-wave elastography before and directly after the massage. Pain during the massage was assessed using the visual analogue scale (VAS). The data of 20 patients (one excluded due to severe pain) with a median age of 34.5 years were analysed. The stiffness values were 11.46 ± 1.55 kPa before and 8.97 ± 0.96 kPa after the massage ( p < 0.0001 ). The mean drop was 2.49 ± 1.09 kPa. The greatest decrease was observed in people with higher elasticity values before the massage (r = 0.79; p < 0.0001 ). The median intensity of pain was 7.2 (range: 6–9.5). We concluded that shear-wave elastography is a sensitive tool to monitor changes in the stiffness of the masseter muscle.

scholarly journals Assessment of testes with two-dimensional Shear Wave Elastography in patients with operated inguinal hernia

2021 ◽  
Author(s):  
Mehmet Sedat Durmaz ◽  
Fatih Ates ◽  
Serdar Arslan ◽  
Turgay Kara ◽  
Funda Gökgöz Durmaz ◽  
...  
Keyword(s):  
Inguinal Hernia ◽  
Healthy Volunteers ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Testicular Volume ◽  
Two Dimensional ◽  
Healthy Group ◽  
Significant Difference ◽  
Operation Techniques ◽  
The Mean

Aim: We compared the two-dimensional shear-wave elastography (2D-SWE) values between the testes with same side operated inguinal hernia (IH) and the contralateral testes, as well as the testes of healthy volunteers without IH. Material and methods: A total of 189 participants (117 unilateral [117 testes] and 8 bilateral operated IH patients [16 testes] and 64 healthy volunteers [128 testes]), providing a total of 378 testicles, were investigated prospectively. All patients underwent B-mode ultrasonography (US) and 2D-SWE examinations. Operation type, the period between diagnosis and operation, the period since the operation, testes volumes, and 2D-SWE values were compared. Results: The B-mode US finding of the testes were normal in all participants. The mean testes’ volume of same side operated IH was significantly lower comparing to contralat-eral testes and the healthy group (p<0.001). The 2D-SWE values of the testes with same side operated IH were significantly higher comparing to the contralateral testes and the healthy group (p<0.001). There was a statistically significant correlation between 2D-SWE values and IH severity, as well as the duration of the hernia (p=0.001). There was no significant correlation between the IH severity and testes volume (p=0.285). No significant difference was found between the direct and indirect IH in terms of testicular volume and SWE values and between the duration of the hernia, the time after sugery, testicular volume and SWE values according to operation techniques(p>0.005). Conclusions: The 2D-SWE can be used as an effective imag-ing method to evaluate testicular stiffness with objective numerical values, to estimate the severity of histologic damage in patients with operated IH.

scholarly journals Assessing the Effects of Aging on Muscle Stiffness Using Shear Wave Elastography and Myotonometer

Healthcare ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1733
Author(s):  
Yerim Do ◽  
Prarthana Sanya Lall ◽  
Haneul Lee
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Tissue Level ◽  
Muscle Stiffness ◽  
Medial Gastrocnemius ◽  
The Mean ◽  
Muscle Impairment ◽  
Effects Of Aging

The current study investigated the differences in muscle stiffness between older and young adults at rest and during contraction. We also evaluated the differences in muscle stiffness assessments using a myotonometer (MyotonPRO) and shear wave elastography (SWE). Twenty-two older adults (mean age, 66.6 ± 1.6 years) and 23 young adults (mean age, 66.6 ± 1.6 years) participated in this study. Muscle stiffness of the tibialis anterior (TA) and medial gastrocnemius (MG) muscles at rest and during contraction were measured using SWE and the MyotonPRO. The stiffness increase rate (SIR) was also calculated to determine the absolute stiffness difference. The mean muscle stiffness of the TA and MG muscles was significantly lower in older adults than in young adults at rest and during contraction (p < 0.05). Similarly, the SIR values of the TA and MG were significantly lower in older adults than in young adults (p < 0.05). Our results indicate that both instruments could be used to quantify muscle stiffness changes and serve as a cornerstone for assessing aging-related losses in muscle function. Stiffness measures may help exercise professionals to develop an in-depth understanding of muscle impairment at the tissue level.

scholarly journals Determination of Reference Values of the Masseter Muscle Stiffness in Healthy Adults Using Shear Wave Elastography

2021 ◽  
Vol 18 (17) ◽  
pp. 9371
Author(s):  
Anna Olchowy ◽  
Mieszko Więckiewicz ◽  
Andrzej Malysa ◽  
Cyprian Olchowy
Keyword(s):  
Shear Wave ◽  
Reference Values ◽  
Masseter Muscle ◽  
Influencing Factor ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Internal Organs ◽  
Masticatory System ◽  
Stiffness Characteristics

Shear wave elastography (SWE) is an objective and reliable method for the assessment of muscles and internal organs. Every organ exhibits its own stiffness characteristics and hence requires individual reference values. We aimed to determine the reference values of stiffness of the masseter muscle in healthy adult individuals using SWE. We analyzed the data of 140 participants (74 men, 66 women) with a median age of 50 years. The overall mean elasticity was 10.67 ± 1.77 kPa. The average values were lower by 2.25 kPa (9.15%) in women compared to men (9.48 ± 1.47 kPa vs. 11.73 ± 1.27 kPa; p < 0.0001). The values of stiffness increased with age, with a correlation coefficient of about 0.35 and a p < 0.0001. Age was a significant influencing factor of masseter muscle stiffness. The left and right masseters had similar stiffness. We conclude that stiffness values are significantly lower in women than in men with a difference of 9%. Age significantly influences the stiffness of masseter muscle, and the values of stiffness increase significantly with age, particularly in men. However, further studies are required to determine the precise ranges of stiffness accounting for age and sex in healthy subjects and people with disorders and conditions of the masticatory system.

scholarly journals Sequential Changes in Posterior Shoulder Muscle Elasticity After Throwing as Assessed via Ultrasound Shear Wave Elastography

2021 ◽  
Vol 9 (8) ◽  
pp. 232596712110213
Author(s):  
Kohei Yamaura ◽  
Yutaka Mifune ◽  
Atsuyuki Inui ◽  
Hanako Nishimoto ◽  
Takeshi Kataoka ◽  
...  
Keyword(s):  
Shear Wave ◽  
Shear Wave Elastography ◽  
Muscle Stiffness ◽  
Serratus Anterior ◽  
Muscle Elasticity ◽  
Time Points ◽  
Posterior Shoulder ◽  
Study Results ◽  
The Mean ◽  
Lower Trapezius

Background: Improvements in ultrasound diagnostic equipment and techniques can enable muscle stiffness to be measured quantitatively as muscle elasticity using ultrasound shear wave elastography (USWE), where high muscle elasticity values represent muscle stiffness. Purpose: To use USWE to analyze the sequential changes in muscle elasticity in the posterior shoulder before and after pitching. Study Design: Descriptive laboratory study. Methods: The authors evaluated 14 baseball players who had played in high school or college at an intermediate level. The elasticity of the supraspinatus, infraspinatus (ISP), middle trapezius, lower trapezius (LT), rhomboideus, and serratus anterior muscles of the throwing shoulder was measured using USWE at 3 time points: before, immediately after, and 24 hours after a throwing session of 100 pitches. The authors analyzed the sequential changes in the mean elasticity values of the respective muscles at the 3 time points. Results: The mean elasticity values before, immediately after, and 24 hours after throwing were as follows: supraspinatus: 32.9, 53.4, 43.8 kPa; ISP: 22.7, 44.8, 43.7 kPa; middle trapezius: 45.1, 70.3, 59.9 kPa; LT: 32.8, 45.5, 46.5 kPa; rhomboideus: 29.1, 47.5, 38.8 kPa; and serratus anterior: 19.2, 36.9, 26.5 kPa, respectively. The mean elasticity values for all tested muscles were significantly higher immediately after throwing compared with before throwing ( P ≤ .0086 for all), and elasticity values in the ISP and LT remained significantly higher 24 hours after throwing compared with before throwing ( P ≤ .019 for both). Conclusion: The study results indicated that pitching significantly increased ISP and LT muscle elasticity even after 24 hours.

scholarly journals Monitoring of Changes in Masticatory Muscle Stiffness after Gum Chewing Using Shear Wave Elastography

2021 ◽  
Vol 10 (11) ◽  
pp. 2480
Author(s):  
Cyprian Olchowy ◽  
Kinga Grzech-Leśniak ◽  
Jakub Hadzik ◽  
Anna Olchowy ◽  
Mateusz Łasecki
Keyword(s):  
Shear Wave ◽  
Masseter Muscle ◽  
Eating Habits ◽  
Shear Wave Elastography ◽  
Masticatory Muscles ◽  
Muscle Stiffness ◽  
Temporalis Muscle ◽  
Gum Chewing ◽  
Intensive Exercise ◽  
The Impact

This study aimed to investigate if intensive exercise affects the stiffness of the masticatory muscles measured with shear-wave elastography. The study included a cohort of healthy adults (n = 40) aged 40 ± 11 years. In each individual, the stiffness of both the masseter and temporalis muscle was examined three times: at baseline, after 10 min of intensive exercise (chewing gum), and after 10 min of relaxation. Stiffness values (median (IQR)) of both the masseter and temporalis muscle were the lowest at the baseline (11.35 (9.7–12.65) and 10.1 (9.1–10.95)), increased significantly after the exercise (12.5 (11.1–13.25) and 10.3 (10.2–10.52)) and then dropped significantly after 10 min of relaxing (11.75 (9.95–12.6) and 10.2 (9.65–11.9)). The stiffness of the temporalis muscle was significantly lower than that of the masseter muscle. The values of the stiffness of the masseters correlated significantly with the values of the stiffness of the temporalis muscles. Shear wave elastography proved to be a sensitive method for showing changes in the stiffness of the muscles involved in the mastication occurring as a response to the effort, which increased the muscle stiffness. Further research is needed to broaden knowledge on the impact of eating habits and the occurrence of parafunctions on the development of temporomandibular disorders and the condition of masticatory muscles.

scholarly journals Muscle stiffness in tension-type headache patients with pericranial tenderness

2018 ◽  
Vol 1 ◽  
pp. 251581631876029 ◽  
Author(s):  
Lærke Tørring Kolding ◽  
Thien Phu Do ◽  
Caroline Ewertsen ◽  
Henrik Winther Schytz
Keyword(s):  
Healthy Volunteers ◽  
Shear Wave ◽  
Muscle Tone ◽  
Shear Wave Elastography ◽  
Tension Type Headache ◽  
Muscle Stiffness ◽  
Muscle Tenderness ◽  
Local Tenderness ◽  
Type Headache ◽  
Headache Patients

Background: Tension-type headache patients have previously been shown to have increased muscle tone, stiffness and tenderness in the trapezius muscle compared to healthy volunteers. Shear wave elastography is a non-invasive method to measure muscle stiffness. The aim of the study was to use shear wave elastography to investigate if tension-type headache patients had increased pericranial muscle stiffness and whether pericranial muscle stiffness correlated to muscle tenderness. Methods: Seventeen patients with very frequent or chronic tension-type headache associated with pericranial tenderness and 29 healthy volunteers were included. Muscle stiffness was measured using shear wave elastography and muscle tenderness was measured using local tenderness score and total tenderness score. Results: There was no statistically significant difference in muscle stiffness between tension-type headache patients and healthy volunteers. The local tenderness and total tenderness scores were higher in tension-type headache patients compared with healthy volunteers. There was no correlation between muscle stiffness and tenderness. Conclusion: We found no sign of increased pericranial muscle stiffness in tension-type headache patients compared with healthy volunteers using shear wave elastography. Our findings do not suggest a generalized pericranial increase in muscle tone in very frequent and chronic tension-type headache patients.

scholarly journals Stiffness of the Masseter Muscle in Children—Establishing the Reference Values in the Pediatric Population Using Shear-Wave Elastography

2021 ◽  
Vol 18 (18) ◽  
pp. 9619
Author(s):  
Cyprian Olchowy ◽  
Anna Olchowy ◽  
Aleksander Pawluś ◽  
Mieszko Więckiewicz ◽  
Luca Maria Sconfienza
Keyword(s):  
Shear Wave ◽  
Masseter Muscle ◽  
Pediatric Population ◽  
Shear Wave Elastography ◽  
Total Sample ◽  
Healthy Children ◽  
Significant Difference ◽  
The Right ◽  
The Impact ◽  
Masseter Muscles

In children, the quality and muscle function are altered in many pathologic conditions, including temporomandibular disorders. Although several methods have been used to evaluate muscle tonus, none became a golden standard. Moreover, the masseter muscle characteristics in children have not been investigated to date. This study aimed to measure the stiffness of the masseter muscle using shear-wave elastography in healthy children. We enrolled 30 healthy children (mean age 10.87 ± 3.38 years). The stiffness of masseter muscles was measured with shear wave elastography. Stiffness for the total sample was 6.37 ± 0.77 kPa. A comparison of the measurements did not show significant differences between the right and the left masseter muscles (left—6.47 ± 0.78 kPa; right—6.24 ± 0.76 kPa; p = 0.3546). A significant difference was seen between boys and girls (boys—5.94 ± 0.50 kPa; girls—6.63 ± 0.80; p = 0.0006). Shear-wave elastography is a promising diagnostic tool. It may help to detect changes in the stiffness of the masseter muscle and draw attention to pathological processes within the jaw muscles. Directions for further research shall include determining stiffness values in pathological conditions and the impact of biological and functional factors on the stiffness of the masseter muscle.

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