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J Man Manip Ther ; 30(5): 284-291, 2022 10.
Article in English | MEDLINE | ID: mdl-35313787

ABSTRACT

OBJECTIVES: To use ultrasound (US) imaging to determine the validity and reliability of needle placement of two dry needling (DN) protocols for the lumbar multifidus (LM) in individuals with a high body mass index (BMI). METHODS: Twenty-one participants with a BMI higher than 25 kg/m2 completed the study. A US scanner was used to determine the location of needle placement after a 100 mm long needle was inserted in the LM at L4 and L5 following two DN protocols for the deep LM muscle. US images were saved and viewed 6 months later to determine the intra-tester reliability. RESULTS: The probability of reaching the deep LM muscle was high (85-95%) at L4 and L5. Although the needle reached a bony landmark 85-100% of the time, it only reached the vertebra lamina as intended 70-75% of the time. The intra-tester reliability of needle placements based on analysis of real-time and recorded US images was poor-to-moderate. CONCLUSIONS: Although the bony drop may not indicate that the needle has reached the vertebra lamina as the protocol intended, reaching a bony drop is still meaningful as it coincided with reaching the LM in the majority of participants.


Subject(s)
Lumbosacral Region , Paraspinal Muscles , Humans , Lumbosacral Region/diagnostic imaging , Needles , Paraspinal Muscles/diagnostic imaging , Reproducibility of Results , Ultrasonography/methods
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