I have to be careful what I say here as I am criticizing my professional colleagues, but …
A while back there was this a couple of studies on proximal changes in those with Achilles tendinopathy. I blogged about one of them here and the other one is here. Both studies found those with Achilles tendinopathy did have change in proximal function such as muscle activity and hip motion. Both studies did lead the author to discuss the role of the proximal structures in Achilles tendinopathy. This lead to responses in social media on how important the hip and core are and that we need to focus the treatment interventions there. This was despite that this is not what the studies showed as correlation is not causation.