Not yet investigated
What we have so far
Guidelines contradict each other on this more than on almost anything else in orthopaedics, and the effect size sits right at the edge of what a patient notices.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.