Assertion: placebo's study | /r/MadeOf | myriad technical limitations
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text: As noted above, the frequent contention that medial branch blocks and intraarticular blocks are diagnostically comparable are based on old studies that contained myriad technical limitations (e.g., not prescreening participants with diagnostic blocks, measurement of diagnostic effect at inappropriate intervals, use of excessive volumes, not using contrast to ensure proper positioning).We hypothesized that medial branch blocks would be superior for reasons that could include the following: less procedure-related pain (i.e., lower false-negative rate); the high failure rate of intraarticular injections, which were confirmed in our study; aberrant, nonmedial branch innervation in some people; greater face validity; and the extrapolation of clinical trials examining the prognostic value of other nerve blocks before ablation (e.g., celiac plexus neurolysis).Our studies are in contrast to a case-control study (N = 510) by Cohen et al.,in which the prognostic value of medial branch blocks and intraarticular injections performed by the same practitioners were compared to each other before radiofrequency ablation, with medial branch blocks found to be superior.