The mid-foot ( arch ) with the feet are a necessary shape designed for typical biomechanics. A lot of structures are responsible for holding the particular mid-foot stable. The key is considered a muscle/tendon complex that starts in the lower-leg and attaches towards the mid-foot ( arch ). If the muscle is unable to carry out it’s purpose the mid-foot of the foot collapses causing soreness and progressive disability. This is identified as posterior tibial tendon dysfunction. It’s important this is detected early on so it can be helped by rigid foot supports to avoid additional impairment. If it’s not treated earlier and also treated, surgical procedures is frequently required because it will become really crippling.