Posterior Shoulder Capsules Are Thicker and Stiffer in the Throwing Shoulders of Healthy College Baseball Players

Takenaga, Tetsuya; Sugimoto, Katsumasa; Goto, Hideyuki; Nozaki, Masahiro; Fukuyoshi, Masaki; Tsuchiya, Atsushi; Murase, Atsunori; Ono, Tetsuya; Otsuka, Takanobu

doi:10.1177/0363546515608476

Cited by 86 publications

(78 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results are similar to previous studies. Conversely, Takenaga et al investigated the stiffness of the posterior and posteroinferior capsules in throwing shoulders of healthy college baseball players using SWE and reported that each capsule on the throwing side became stiffer than that on the nonthrowing side. In this study, we performed measurements using their methods.…”

Section: Discussionmentioning

confidence: 99%

Increased Stiffness of Rotator Cuff Tendons in Frozen Shoulder on Shear Wave Elastography

Wada

Itoigawa

Yoshida

et al. 2019

J of Ultrasound Medicine

View full text Add to dashboard Cite

Objectives-To evaluate the stiffness and morphologic characteristics of the capsule, rotator cuff tendons and muscles, coracohumeral ligament (CHL), and long head of the biceps in patients with frozen shoulder using shear wave elastography (SWE) with B-mode ultrasound.Methods-Thirty-two patients with frozen shoulder were divided into freezing and frozen phases. All patients had limitations of their range of motion without rotator cuff tears. Stiffness was measured by SWE in the supraspinatus (SSp) tendon, infraspinatus (ISp) tendon, SSp muscle, ISp muscle, teres minor muscle, upper and lower trapezius muscles, posterior capsule, CHL, and long head of the biceps. The posterior capsule and CHL thicknesses were also investigated with B-mode ultrasound. All values were compared in the affected and unaffected shoulders in each phase. Results-The SWE values for the SSp and ISp tendons in the freezing phase and the CHL in the frozen phase were significantly greater on the affected side than the unaffected side (mean AE SD, 280.4 AE 125.3 versus 178.1 AE 73.3, 318.4 AE 110.7 versus 240.8 AE 91.5, and 287.2 AE 135.3 versus 214.1 AE 91.1 kPa, respectively; P < .05). The posterior capsule in both the freezing and frozen phases and the CHL in the frozen phase were significantly thicker on the affected side than the unaffected side (1.3 AE 0.2 versus 0.9 AE 0.3, 1.2 AE 0.4 versus 0.9 AE 0.3, and 4.4 AE 1.4 versus 3.3 AE 1.1 mm; P < .01). Conclusions-The SWE values of the both SSp and ISp tendons increased in the freezing phase, and that of the CHL also increased in the frozen phase. Not only the change in thickness of the capsule but also the change in stiffness of the rotator cuff may correlate with frozen shoulder.

show abstract

Section: Discussionmentioning

confidence: 99%

Increased Stiffness of Rotator Cuff Tendons in Frozen Shoulder on Shear Wave Elastography

Wada

Itoigawa

Yoshida

et al. 2019

J of Ultrasound Medicine

View full text Add to dashboard Cite

show abstract

“…The hamstring muscles have a direct relationship with knee stability by working in synergy with the ACL in limiting anterior tibial translation [71]. Studies have shown the existence of a ligament muscle arc reflex between the ACL and the hamstrings, revealing the importance of this muscle group during ACL loading [72,73]. Moreover, recent guidelines for defining a successful outcome after ACL injury or reconstruction clearly show hamstring strength as an important target one and two years after ACL injury and reconstruction [74].…”

Section: Future Directions Andmentioning

confidence: 99%

Functional Brain Plasticity Associated with ACL Injury: A Scoping Review of Current Evidence

Neto

Sayer

Theisen³

et al. 2019

Neural Plasticity

View full text Add to dashboard Cite

Anterior cruciate ligament (ACL) injury is a common problem with consequences ranging from chronic joint instability to early development of osteoarthritis. Recent studies suggest that changes in brain activity (i.e., functional neuroplasticity) may be related to ACL injury. The purpose of this article is to summarize the available evidence of functional brain plasticity after an ACL injury. A scoping review was conducted following the guidelines of the Joanna Briggs Institute and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The terms “brain,” “activity,” “neuroplasticity,” “ACL,” “injury,” and “reconstruction” were used in an electronic search of articles in PubMed, PEDro, CINAHL, and SPORTDiscus databases. Eligible studies included the following criteria: (a) population with ACL injury, (b) a measure of brain activity, and (c) a comparison to the ACL-injured limb (contralateral leg or healthy controls). The search yielded 184 articles from which 24 were included in this review. The effect size of differences in brain activity ranged from small (0.05, ACL-injured vs. noninjured limbs) to large (4.07, ACL-injured vs. healthy control). Moreover, heterogeneity was observed in the methods used to measure brain activity and in the characteristics of the participants included. In conclusion, the evidence summarized in this scoping review supports the notion of functional neuroplastic changes in people with ACL injury. The techniques used to measure brain activity and the presence of possible confounders, as identified and reported in this review, should be considered in future research to increase the level of evidence for functional neuroplasticity following ACL injury.

show abstract

“…ABER has also been shown to confer greater sensitivity and specificity for detection of partial-thickness rotator cuff tears (119,120) alternative to CT (125). Researchrelated applications have also been reported, such as shear-wave sonoelastography; Takenaga et al not surprisingly found that the posterior/posteroinferior capsules of throwing shoulders in collegiate baseball players were thicker and stiffer than those of the nonthrowing shoulders and that stiffness was more closely correlated to GIRD than thickness (126).…”

Section: Us and Ctmentioning

confidence: 99%

Shoulder Injuries in the Overhead-Throwing Athlete: Epidemiology, Mechanisms of Injury, and Imaging Findings

2018

View full text Add to dashboard Cite

The unparalleled velocity achieved by overhead throwers subjects the shoulder to extreme forces, resulting in both adaptive changes and pathologic findings that can be detected at imaging. A key biomechanical principle of throwing is achieving maximum external rotation, which initially leads to adaptive changes that may result in a pathologic cascade of injuries. In addition to the well-established concepts of glenohumeral internal rotation deficit and internal impingement, osseous and soft-tissue injuries of the shoulder unique to overhead athletes are illustrated. The epidemiology and biomechanics of throwing injuries are reviewed, and examples from the authors' institutional experience with competitive, collegiate, and professional baseball players are provided to demonstrate the constellation of unique imaging findings seen in overhead throwing athletes. Given the widespread popularity of baseball, and other sports relying on overhead throwing motions at all playing levels from recreational to professional, it is important for radiologists in various practice settings to be familiar with the special mechanisms, locations, and types of shoulder injuries seen in the overhead throwing population. RSNA, 2018.

show abstract

Posterior Shoulder Capsules Are Thicker and Stiffer in the Throwing Shoulders of Healthy College Baseball Players

Cited by 86 publications

References 30 publications

Increased Stiffness of Rotator Cuff Tendons in Frozen Shoulder on Shear Wave Elastography

Increased Stiffness of Rotator Cuff Tendons in Frozen Shoulder on Shear Wave Elastography

Functional Brain Plasticity Associated with ACL Injury: A Scoping Review of Current Evidence

Shoulder Injuries in the Overhead-Throwing Athlete: Epidemiology, Mechanisms of Injury, and Imaging Findings

Contact Info

Product

Resources

About