The video below shows how I measure ankle mobility in the clinic with the foot on the floor and controlling the ankle to prevent pronation (arch flattening out). It’s great for assessing how ankle mobility could be influencing ankle sprains, plantar fasciitis, knee pain, back pain, etc.
To measure your own ankle mobility, simply assume the kneeling position shown in the video. Rock your knee over the foot to touch the wall measuring how far your big toe is from the wall with a simple tape measure. The heel must stay down and arch not allowed to collapse. The goal is 4 inches!
Below is a video showing a correction I will commonly use in the clinic