The concept appears to be intrinsic to all contemporary conventional shoes and is theorised to impose excessive load on the heads of the metatarsals and overstretch the plantar connective tissue; whilst inhibiting natural toe and arch flexion. Websites such as Somastruct give pretty clear overview of the issue.
Currently I'm trying to move on from my peroneus longus ligament pain and the associated 'oddness' around the metatarsals and articles such as the one mentioned struck a chord. I found my rather worn Brook Green Silence shoes to be clear of my ankle and pleasant in that regard but after a few days of wear the centre my right foot became more painful.
|My left shoe after nearly 800km|
|Stock photo of a new shoe|