Clinical trial NCT05776199: Myofascial Trigger Points of the Levator Scapulae Muscle
Official title: Sonoelastography, Tensiomyography and Mechanosensitivity Between Latent, Active and Control Trigger Points in Myofascial Trigger Points of the Levator Scapulae Muscle.
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Myofascial Pain Syndrome
Keywords: physiotherapies techniques
sonoelastography;
muscle tension
neck pain
Lead sponsor: Universidad Católica de Ávila
Sponsor class: OTHER
First posted: 2023-03-20
Enrollment: 80
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: HEALTH_SERVICES_RESEARCH

Brief summary: Chronic neck pain (CNP) is considered one of the most common musculoskeletal disorders worldwide and myofascial pain syndrome (MPS) is the most prevalent musculoskeletal disorder in the majority of the population. However, normal tissue contractility changes and the different types of myofascial trigger points (MTrPs) measured by tensiomography have not yet been studied. For this reason, the aim of our study is to determine the differences in pressure pain threshold (PPT), tensiomyography and sonoelastography between the palpation zone of control points with respect to active and latent MTrPs in the levator scapulae muscles of subjects with CNP. A single-blind descriptive cross-sectional study is conducted with a convenience sample of 60 points (20 active, 20 latent and 20 control points) on both sides of the subject in the levator scapulae muscles of individuals diagnosed with CNP.

The order of outcome measurements for each point was PPT, manual tension index sonoelastography and tensiomyography separated by 15 minutes. Objective contractile parameters were: contraction time (Tc), mean relaxation time (Tr), maximum radial displacement (Dm), holding time (Ts) and delay time (Td).


Eligibility criteria: Inclusion Criteria:

* Bilateral presence of at least one active trigger point.
* One control point and one latent trigger point in the levator scapulae muscles.
* Subjects aged between 18 and 65 years.
* Subjects diagnosed with chronic neck pain for more than 6 weeks.
* Signed informed consent to be able to participate in the study.

Exclusion Criteria:

* Previous treatment for chronic neck pain (within one year) or medical history with a diagnosis of neuropathy.
* Rheumatoid arthritis.
* Myopathy.
* Cognitive impairment or mental disability.
* Skin disorders.
* Pregnancy.
* Activity level of a high-level athlete.
* Medical conditions (fractures, structural deformities and neoplasms).
* Surgical interventions in the cervical-dorsal region or upper extremities.

Primary outcomes:
measure: manual tension index sonoelastography
timeFrame: 1 week
Secondary outcomes:
measure: tensiomyography
timeFrame: 1 week
measure: minimum intensity of a stimulus that elicits the sensation of pain (pressure pain threshold).
timeFrame: 1 week
Other outcomes:
Locations:
city: Ávila
country: Spain
facility: Universidad Católica de Ávila
Study officials:
References:
citation: Myburgh C, Lauridsen HH, Larsen AH, Hartvigsen J. Standardized manual palpation of myofascial trigger points in relation to neck/shoulder pain; the influence of clinical experience on inter-examiner reproducibility. Man Ther. 2011 Apr;16(2):136-40. doi: 10.1016/j.math.2010.08.002. Epub 2010 Sep 1.
citation: Tous-Fajardo J, Moras G, Rodriguez-Jimenez S, Usach R, Doutres DM, Maffiuletti NA. Inter-rater reliability of muscle contractile property measurements using non-invasive tensiomyography. J Electromyogr Kinesiol. 2010 Aug;20(4):761-6. doi: 10.1016/j.jelekin.2010.02.008. Epub 2010 Mar 16.
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