Shear Wave Elastography (SWE) of Asymptomatic Achilles Tendons: A Comparison Between Semiprofessional Athletes and the Nonathletic General Population

Dirrichs, Timm; Schrading, Simone; Gatz, Matthias; Tingart, Markus; Kuhl, Christiane K.; Quack, Valentin

doi:10.1016/j.acra.2018.12.014

Cited by 31 publications

(40 citation statements)

References 17 publications

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“…Our results are consistent with previous studies that found that the AT became stiffer after chronic mechanical loading such as exercise (Albracht and Arampatzis, 2013;Siu et al, 2016;Dirrichs et al, 2019). Siu et al (2016) demonstrated that frequent weightbearing exercisers had greater AT stiffness on the non-dominant side than did infrequent exercisers.…”

Section: Mg Lg and At Stiffness Between The Amateur Basketball Playsupporting

confidence: 92%

“…Another study investigated muscle structure and stiffness in lower limbs and observed no difference in MG and LG stiffness and muscle thickness between dominant and non-dominant lower limbs in professional badminton players (Bravo-Sánchez et al, 2019). Similar results were also observed in the AT stiffness of semiprofessional running athletes and the non-athletic general population (Dirrichs et al, 2019). Cristi-Sánchez et al (2019) assessed AT stiffness between the dominant and the nondominant limbs in elite soccer players using the MyotonPRO.…”

Section: Mg Lg and At Stiffness Between The Non-dominant And Dominamentioning

confidence: 65%

“…They comprised 20 amateur basketball players and 20 general non-athletic subjects. The sample size was calculated based on a previous study (Dirrichs et al, 2019), in which the effect size between athletes and non-athletic control groups on AT stiffness was 0.92. Assuming that α at 5% and statistical power at 80%, the estimated sample size was 16 subjects per group.…”

Section: Participantsmentioning

confidence: 99%

“…Siu et al (2016) demonstrated that frequent weightbearing exercisers had greater AT stiffness on the non-dominant side than did infrequent exercisers. Healthy semiprofessional running athletes exhibit a significantly higher value of AT stiffness than the non-athletic general population on both the left and right sides (Dirrichs et al, 2019). Some 14 weeks of resistance training intervention resulted in a 16% increase in triceps surae aponeurosis stiffness (Albracht and Arampatzis, 2013).…”

Section: Mg Lg and At Stiffness Between The Amateur Basketball Playmentioning

confidence: 99%

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Stiffness of the Gastrocnemius–Achilles Tendon Complex Between Amateur Basketball Players and the Non-athletic General Population

Chang

Wang

et al. 2020

Front. Physiol.

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Muscle and tendon stiffness are related to sports performance, tendinopathy, and tendon degeneration. However, the effects of habitual loading on muscle and tendon mechanical properties are unclear. Using amateur basketball players as examples, we investigated the effects of mechanical loading on the stiffness of the gastrocnemius–Achilles tendon (AT) complex in non-dominant and dominant lower limbs. Then, we evaluated the correlation between gastrocnemius and AT stiffness. Forty participants (20 amateur basketball players; 20 normal non-athletic persons) were recruited for this study. Stiffness of the gastrocnemius–AT complex was assessed using MyotonPRO at neutral position and 10° dorsiflexion of the ankle joint in participants from amateur basketball players and the non-athletic general population. Our results showed a greater stiffness of the gastrocnemius–AT complex in amateur basketball players than that in healthy non-athletic subjects at neutral position and 10° dorsiflexion of the ankle joint (P < 0.05). No significant difference in stiffness was found between the non-dominant and dominant lower limbs either in amateur basketball players or in generally healthy subjects (P > 0.05). A significant positive correlation was obtained between stiffness of the AT and medial gastrocnemius (MG) in amateur basketball players (neutral position: r = 0.726 and P = 0.001; dorsiflexion 10°: r = 0.687 and P = 0.001). The amateur basketball players exhibit significantly higher stiffness value in Achilles and gastrocnemius. This is possibly caused by repeated training effects. The symmetric stiffness of the AT and gastrocnemius exists both in amateur basketball players and generally healthy subjects. A significant correlation between the AT and the MG was found in amateur basketball players.

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Section: Mg Lg and At Stiffness Between The Amateur Basketball Playsupporting

confidence: 92%

Section: Mg Lg and At Stiffness Between The Non-dominant And Dominamentioning

confidence: 65%

Section: Participantsmentioning

confidence: 99%

Section: Mg Lg and At Stiffness Between The Amateur Basketball Playmentioning

confidence: 99%

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Stiffness of the Gastrocnemius–Achilles Tendon Complex Between Amateur Basketball Players and the Non-athletic General Population

Chang

Wang

et al. 2020

Front. Physiol.

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“…39,52 It needs to be considered that decreased elastic modulus and shear wave velocity values are reported in healthy elderly people, 18 and while showing a wide physiological range, the interindividual differences might rather be related to their physical condition in general. 53 Literature concerning normative age-related values and values adapted for certain physical training conditions (e.g. athletes vs. nonathletes) is missing.…”

Section: Discussionmentioning

confidence: 99%

Anterior knee pain after total knee arthroplasty: A multifactorial analysis

Laubach

Hellmann

Dirrichs

et al. 2020

J Orthop Surg (Hong Kong)

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Purpose: Dissatisfaction and an impaired quality of life after total knee arthroplasty (TKA) is often associated with postsurgical anterior knee pain (AKP). The underlying pathological mechanisms are not yet fully understood. Therefore, a multifactorial approach encompassing clinical and radiological parameters seemed reasonable and promising to investigate postsurgical AKP. Methods: In this cross-sectional study, 25 patients without and 25 patients with postsurgical AKP after unilateral TKA were randomly recruited from a larger cohort of patients. Multiple clinical and radiological parameters—including real-time shear wave elastography (SWE) to measure the patellar and quadriceps tendon elasticity—were acquired and subsequently associated with AKP. For statistical analysis, SPSS (IBM, version 25) was used. Results: In total 50 participants (58.0% men, mean age 63.42 years, mean body mass index 29.75 kg/m2), having different prosthetic designs implanted, were included. Independently of key covariates, the strength of the quadriceps muscle ( p = 0.021), a thinner inlay ( p = 0.041), and a lower position of the patella ( p = 0.041) were associated with AKP. Although no correlation with AKP was found ( p = 0.346, resp. p = 0.154), we observed significantly decreased Young’s modulus of the patellar and quadriceps tendons for the involved knee compared to the uninvolved knee ( p < 0.001). Conclusion: In conclusion, quadriceps muscle strength, inlay thickness, and the patella position might be of particular relevance in avoiding postsurgical AKP. Future studies with larger sample sizes are needed to clarify the impact of quadriceps muscle strength and the postoperative patella position as well as the role of SWE as a personalized modifiable prediction marker.

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Effects of orally administered hormonal contraceptives on the musculoskeletal system of healthy premenopausal women—A systematic review

Römer

Czupajllo

Wolfarth

et al. 2022

Health Science Reports

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Introduction The musculoskeletal system (MSK) is one of the extragonadal target tissues of sex hormones: osteoblasts and osteocytes express estrogen receptors, while in fibroblasts of the anterior cruciate ligament (ACL) and myocytes of the vastus lateralis muscle (MVL), estrogen and progesterone receptors can be detected by immunoassay. Indeed, upon binding of sex hormones to the extragonadal receptors, the MSK seems to respond to varying levels of sex hormones with structural adaptation. Hormonal contraceptives can affect the musculoskeletal system; however, there is a lack of high‐quality studies, and no recommendation for female athletes exists. Material and Methods This is a systematic review of publications on the effects of oral hormonal contraceptives on the biomechanical properties of tendons, muscles and ligaments, muscle strength, and soft tissue regeneration. A systematic database search was performed using MESH keywords and PRISMA (Preferred Reporting Items for Systematic Reviews and Meta‐Analyses) methodology in Pubmed and Cochrane to identify studies investigating the influence of oral hormonal contraceptives on muscles, tendons, and ligaments of healthy, adult, premenopausal women. The risk of bias in the studies included was assessed by two independent researchers using the ROBINS‐I Tool. Results Nine comparative studies were identified that met the inclusion criteria. Endpoints were muscle strength and biomechanical tissue properties. No significant influence of oral hormonal contraceptives on muscle strength was found, although general muscle growth and Type I fiber growth were found to be significantly increased in a dose‐dependent manner. There was a negative effect on regeneration of muscle strength after exercise. The stiffness of tendons remained unchanged, while their size adaptation to load increased. Conclusion The anabolic effect could be beneficial for specific sports, whereas reduced muscle regeneration could be disadvantageous for women exercising with high‐performance demands. The different effects on tendons and ligaments and the functional consequences of altered ligament and muscle stiffness, especially with regard to synthetic hormones, should be further investigated.

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Shear Wave Elastography (SWE) of Asymptomatic Achilles Tendons: A Comparison Between Semiprofessional Athletes and the Nonathletic General Population

Cited by 31 publications

References 17 publications

Stiffness of the Gastrocnemius–Achilles Tendon Complex Between Amateur Basketball Players and the Non-athletic General Population

Stiffness of the Gastrocnemius–Achilles Tendon Complex Between Amateur Basketball Players and the Non-athletic General Population

Anterior knee pain after total knee arthroplasty: A multifactorial analysis

Effects of orally administered hormonal contraceptives on the musculoskeletal system of healthy premenopausal women—A systematic review

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