The change of muscle nodule before and after trigger point injection for myofascial pain syndrome. A new ultrasonography visualizes muscle nodule and measures the elasticity; observational trial

The change of muscle nodule before and after trigger point injection for myofascial pain syndrome. A new ultrasonography visualizes muscle nodule and measures the elasticity; observational trial - The image change detection of muscle nodule before and after trigger point injection for myofascial pain syndrome by urtrasonography

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000011050

Enrollment

Registered

2013-07-01

Start date

2013-07-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

myofascial pain syndrome

Interventions

trigger point injectioni by local anesthetic no injeciton

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Myofascial pain syndrome patients who meet the following criteria; 1 regional muscle pain 2 palpation of taut band in painful muscles exquisite tenderness spot (myofascial trigger point; MTrP in a taut band 3 patient's recognition of current pain 4 complaint evoked by pressure on a MTrP

Exclusion criteria

Exclusion criteria: taking anti-thrombosis drugs or anti coagulant drugs. history of bleeding disorders presence of cancer. history of shoulder surgery. presence of local or systemic infection. acute trauma (within a week) allergy to anesthetic agents extreme fear of needles

Design outcomes

Primary

Measure	Time frame
elasticity of muscle nodule	—

Secondary

Measure	Time frame
shape of muscle nodule by palpation shape of muscle nodule by ultrasonography pressure pain threshold of muscle nodule reliability	—

Countries

Japan

Contacts

Public ContactKOBAYASHI, Tadashi

Kanazawa University Graduate School of Medical Sciences

tkobayashi@stu.kanazawa.ac.jp

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026