A comprehensive review of the literature confirms that guided injections of the GHJ have overall accuracy higher compared to blind injection. Nevertheless, in some studies, including a relatively large number of shoulders, blind injections have been proven to be 100% accurate. Hence, blind injections of GHJ could be proposed a cost-effective alternative to imaging-guided injection. A large prospective randomized study is needed to gauge this hypothesis and compare the cost-effectiveness of these two techniques for the most common anatomical approaches.
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