Obese Feet

Doesn't it just make sense ? It needs to be part of the dialogue with your clients.
"Obese feet differ significantly from those of healthy adults, particularly in width."
And a change in width may mean a change in function, changes in mobility and stability, which may lead to pain and at the very least, accommodation and compensation.

Foot dimensions and morphology in healthy weight, overweight and obese males

Carina Price [correspondence] Press enter key for correspondence information [email] Press enter key to Email the author
, 
Christopher Nester
http://www.clinbiomech.com/article/S0268-0033(16)30101-2/abstract?platform=hootsuite