The 2021 Cochrane review revealed that while there was a marginal reduction in adverse events associated with USG vs LMG injections (relative risk: 0.72, 95% CI: 0.4 to 1.28, with a 7% absolute difference), this difference did not reach statistical significance ( p = 0.26) ( 27 ).
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Comparison of ultrasound- vs. landmark-guided injections for musculoskeletal pain: an umbrella review.
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