When walking without the proper support under the tarsal joint, our body weight causes the tarsal joint to fall; this causes many structural problems. Analyzing the walking cycle with weight can show you why.
The Red Arrow indicates where the Weight Falls.
Here, your tarsal joint falls
How would you describe walking?
Walking is transferring your body weight from one place to another place on your foot. And your body weight also transfers within your foot through the tarsal joint. This tarsal joint is a group of joints that consists of 12 bones that are arranged in a side-by-side manner and it’s the most complicated joint in our body, though forms the simple look of an arch. If there is no support under this joint, it falls out of its normal range of motion (about 1/8″ of up and down motion) misaligning the whole foot bones including the anklebone on which your body stands.
By supporting the tarsal joint with the proper orthotics that align the anklebones keeps the tarsal joint from falling; this prevents foot deformities, foot pain, major joint deterioration from moving without the alignment, scoliosis, etc. Also, the orthotics that align the anklebones can improve already existing problems that are caused by the fallen tarsal joint.