As of 2016, how many studies on dry needling were conducted since 2009?

The answer reflects the significant growth in research surrounding dry needling from 2009 to 2016. By 2016, a total of 248 studies had been published, indicating a robust interest and increasing evidence base for this treatment modality. This extensive research reflects the broader trend in the field of physical therapy and pain management to explore and validate various techniques, ensuring practitioners are informed by evidence-based practices. The number of studies showcases the ongoing investigation into efficacy, techniques, safety, and applications of dry needling across various patient populations, contributing to its acceptance and integration into treatment protocols.

The other choices provided do not encapsulate the actual number of studies conducted during that period, highlighting a misunderstanding of the research landscape on dry needling at that time.