Evidence of Generalized Muscle Stiffness in the Presence of Latent Trigger Points Within Infraspinatus

Grabowski, Patrick J.; Slane, Laura; Thelen, Darryl G.; Obermire, Travis; Lee, Kenneth S.

doi:10.1016/j.apmr.2018.03.024

Cited by 15 publications

(15 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It gives an opportunity for functional evaluation when the diagnosis is difficult and the clinic is incompatible with radiology. It has been found in literature that there are some UE studies in the areas of rotator cuff muscles,[1232] chronic neck pain,[533] muscular dystrophy,[34] athletes,[635] chronic low back pain,[3637] and torticollis, etc. [38] In our study, for the first time in the literature, we analyzed the UE characteristics of gluteal region muscles in PMS, and still no gold standard diagnostic method is obtained yet.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Ultrasound elastography findings in piriformis muscle syndrome

Demirel

Baykara

Koca

et al. 2018

Indian Journal of Radiology and Imaging

View full text Add to dashboard Cite

Background:Piriformis muscle syndrome (PMS) is relatively less known and underestimated because it is confused with other clinical pathological conditions. Delays in its diagnosis may lead to chronic somatic dysfunction and muscle weakness.Objective:Here, we aimed to evaluate the diagnostic performance of the ultrasound elastography (UE) as an easy, less-invasive, and cost-effective method for early diagnosis of PMS.Materials and Methods:Twenty-eight cases clinically diagnosed as PMS at the outpatient clinic were evaluated by UE. The elastographic strain ratio was calculated by dividing the strain value of the subcutaneous fat tissue by the mean stress value of the muscle beneath. The diagnostic performances of the strain rate measures were compared using the receiver operating characteristic curve analysis.Results:Twenty-one (N = 21) cases were female, and seven (N = 7) of the cases were male. The mean age was 45 years (ranged 24–62 years). The strain rates of piriformis muscle (PM) and gluteus maximus (GM) muscles were significantly higher on the PMS-diagnosed side (P < 0.001). The cutoff value of UE strain ratio for the PM and GM were 0.878 [95% confidence interval (CI) 0.774–0.981] and 0.768 (95% CI 0.622–0.913), respectively, and the sensitivity and specificity values were, respectively, 80.95% and 85.71% for the PM, and they were, respectively, 85.71% and 66.67% for the GM.Conclusion:We showed that the muscle elasticity and tissue hardening increased on the problematic side both on PM and GM. UE may provide early diagnosis of PMS, thereby increasing the possibility of treatment with less invasive methods.

show abstract

Section: Discussionmentioning

confidence: 99%

“…But more information is needed on the use and limitations for correct and effective application of the technique. [456]…”

Section: Introductionmentioning

confidence: 99%

Ultrasound elastography findings in piriformis muscle syndrome

Demirel

Baykara

Koca

et al. 2018

Indian Journal of Radiology and Imaging

View full text Add to dashboard Cite

show abstract

“…Sonoelastography can detect increased resting strain in MPS, as well as detecting microenvironmental changes in pathological tissues earlier than ultrasound [ 10 - 13 ]. In our literature review, we found only 2 studies with sonoelastography in patients with Latent TrPs [ 14 , 15 ]. In their study, Calvo-Lobo et al .…”

Section: Discussionmentioning

confidence: 99%

“…Grabowski et al . [ 15 ] evaluated the infraspinatus muscles of at least one Latent TrP by sonoelastography. They noted that the stiffness of the affected muscle and TrPs was not significantly different; however, both the muscle and the TrPs were stiffer than in the control group.…”

Section: Discussionmentioning

confidence: 99%

Is early diagnosis of myofascial pain syndrome possible with the detection of latent trigger points by shear wave elastography?

Ertekin¹,

Kasar²,

Türkdoğan³

2021

Pol J Radiol

View full text Add to dashboard Cite

IntroductionThe aim of the study was to investigate the contribution of shear wave elastography to the diagnosis of myofascial pain syndrome (MPS) of the upper part of the trapezius.Material and methodsEthical committee approval was obtained for the study. Thirty volunteer women with trigger points in the upper part of the trapezius muscle and 30 healthy women with a similar age distribution were included in the study. The patient group performed a self-stretching exercise program for 4 weeks. No intervention was applied to the control group. Muscle stiffness values of both groups were evaluated with shear wave elastography (SWE), and pain levels of all volunteers were evaluated by the Visual Analogue Scale at the beginning and the end of the study. The statistical analyses were performed using SPSS version 18.0.ResultsThere was a significant decrease after the treatment in terms of upper trapezius muscle stiffness and the pain levels in the patient group (p < 0.001 and p < 0.001). In the patient group, there was a moderate correlation between the decrease in the pain level and the reductions in muscle stiffness (r = 0.595). In control group, there was no significant difference in terms of both muscle stiffness and pain levels before and after treatment (p > 0.05).ConclusionsSWE is a reliable method for detecting latent trigger points in MPS, and it can be used for evaluating the response to treatment.

show abstract

“…Studies show tissue stiffness is significantly increased around TrPs, 142 and blood vessels near TrPs have retrograde flow in diastole, "indicating a highly resistive vascular bed" (Sikdar et al 2009) 138 . The above analogy might offer context to few findings that will be mentioned here briefly.…”

Section: Considering Fibromyalgia As An Entity Of Compressionmentioning

confidence: 99%

Scoping review and interpretation of Myofascial Pain/Fibromyalgia syndrome: an attempt to assemble a medical puzzle

Plaut

2021

Preprint

View full text Add to dashboard Cite

Introduction: Myofascial Pain Syndrome (MPS) is a common overlooked and underdiagnosed condition, and with significant burden. MPS is often dismissed by clinicians while patients remain in pain for years. MPS can evolve into fibromyalgia, however, effective treatments for both are lacking due to absence of a clear mechanism. Many studies focus on central sensitization. Therefore, the purpose of this scoping review is to systematically search cross-disciplinary empirical studies of MPS, focusing on mechanical aspects, and suggest an organic mechanism explaining how it might evolve into fibromyalgia. Hopefully, it will advance our understanding of this disease. Methods: Systematically searched multiple phrases in MEDLINE, EMBASE, COCHRANE, PEDro and medrXiv, majority with no time limit. Inclusion/exclusion based on title and abstract, then full text inspection. Additional literature added on relevant side topics. Review follows PRISMA-ScR guidelines. PROSPERO yet to adapt registration for scoping reviews. Findings: 734 records included. Fascia can adapt to various states by reversibly changing biomechanical and physical properties. Trigger points, tension, and pain are a hallmark of MPS. Myofibroblasts play a role in sustained myofascial tension. Tension can propagate in fascia, possibly supporting a tensegrity framework. Movement and mechanical interventions treat and prevent MPS, while living sedentarily predisposes to MPS and recurrence. Interpretation: MPS can be seen as a pathological state of imbalance in a natural process; manifesting from the inherent properties of the fascia, triggered by a disrupted biomechanical interplay. MPS might evolve into fibromyalgia through deranged myofibroblasts in connective tissue, or "fascial armoring", which may explain pain, distribution of pain, decreased pressure/pain threshold, and other phenomena eg, occasional complete resolution after surgery. Movement is an underemployed requisite in modern lifestyle. Lifestyle is linked to pain and suffering. The mechanism of needling is suggested to be more mechanical than currently thought. MPS should no longer be overlooked but solidified in the domain of common modern medicine.

show abstract

Evidence of Generalized Muscle Stiffness in the Presence of Latent Trigger Points Within Infraspinatus

Cited by 15 publications

References 39 publications

Ultrasound elastography findings in piriformis muscle syndrome

Ultrasound elastography findings in piriformis muscle syndrome

Is early diagnosis of myofascial pain syndrome possible with the detection of latent trigger points by shear wave elastography?

Scoping review and interpretation of Myofascial Pain/Fibromyalgia syndrome: an attempt to assemble a medical puzzle

Contact Info

Product

Resources

About