Ultrasound Confirmation of Fluoroscopically Guided Piriformis Muscle Injections
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ClinicalTrials.gov Identifier: NCT01390090
(The Principal Investigator left the University)
Subjects will have failed conservative treatment, including, but not limited to oral medications, physical therapy, manual manipulation, and/or alternative medicine. They will be evaluated by a spine specialist in the Spine Division of the Department of Orthopaedics and will be scheduled for a piriformis muscle (PM) corticosteroid injection.
Ultrasound evaluation of fluoroscopically guided needle placement in the piriformis muscle. [ Time Frame: Following fluoroscopic guidance of the needle placement and prior to the injection, the needle position will be evaluated by ultrasound. ]
Following the fluoroscopically guided needle placement, the non-invasive ultrasound probe will then be placed on the skin with gel and will be used to visualize the needle tip and evaluate the accuracy of the fluoroscopically guided needle placement. Needle placement will be recorded as either inside or outside the piriformis muscle.
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Ages Eligible for Study:
18 Years to 90 Years (Adult, Senior)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Subjects will have failed conservative treatment, including, but not limited to oral medications, physical therapy, manual manipulation, and/or alternative medicine.
Subject Scheduled to receive piriformis injection for buttock pain
Baseline pain visual analogue scale (VAS) value of at least 4 on a scale of 0-10 points
Subjective complaint of pain in the buttocks with radiation down the thigh and/or leg
Objective clinical diagnosis of piriformis syndrome
Reproduction of pain with maneuvers that stretch or contract the piriformis muscle over the sciatic nerve
Those receiving long-term (>6 months) remuneration for their pain or seeking new or increased long-term remuneration
Those unable to read English and complete the assessment instruments
Diagnosis of systemic inflammatory arthritis (e.g. rheumatoid, lupus)
Addictive behavior, severe clinical depression or psychotic features. The subjects will be identified at the sole discretion of the PI who per the current standard of care will consent the potential subjects to the study
Possible pregnancy or other reason that precludes the use of fluoroscopy. Fluoroscopy is the current standard of care for piriformis injections. Its use in this study is no different than the standard of care and will be no different if the subjects are enrolling in the study or not
Contra-indication to corticosteroid, including known allergies or sensitivities