Using Saline for Myofascial Pain Syndromes (USAMPS)

This study is a prospective, randomized, double-blinded trial involving adult patients
diagnosed with Myofascial Pain Syndromes (MPS). The purpose of this research study is to
compare if there is a therapeutic difference between trigger point injections of normal
saline and conventional drug mix (lidocaine+ triamcinolone acetonide) in treating MPS. In
particular, we will find out about the pain level and duration before and after injection.
Enrolled patients will be randomly assigned to receive trigger point injection that contains
either saline (arm one) or conventional drug mix (arm two) to treat their muscle pain. Upon
discharge, patients will receive instructions for regular active muscle stretching as a plan
to restore their muscle functions. Patients will be asked about their pain level before and
after treatment. In addition, patients will be followed up two weeks after treatment to find
out about their pain status and treatment satisfaction. Currently, there is no standard
protocol or studies in the emergency department for treating patients with MPS. The results
from this study can potentially improve pain management in the emergency department.

Inclusion Criteria:

- Adult patients diagnosed with MPS of the trapezius, gluteus medius/minimus,
iliocostalis thoracis-lumborum, quadratus Lumborum, or paraspinal muscles in the
emergency department.

Exclusion Criteria:

- Patients allergic to lidocaine and/or steroids.

- Pregnant women.

- Prisoners.

- Patients who are cognitively impaired and/or unable to consent for the study.

- Age < 18.

- Signs of localized infection or skin breakdown at the injection site.