Abstract: Injection solutions to treat nerve disorders of the foot are disclosed.

Abstract: A full shoe inlay for athletic shoes constructed of resilient material having a depression for the 1st metatarsal head, a raised portion for the 2nd, 3rd, and 4th metatarsal heads, a full arch support, and an eccentric heel seat. The heel seat is built up more on the inside than on the outside. The inlay prevents or lessens a number of common athletic-related injuries.

Abstract: A shock absorbing, relatively rigid but resilient slab for insertion in footwear as an insole or for being built integrally into the sole of footwear, extends across the shoe width and lengthwise from the outer rear border of the heel to the metatarsal heads of the foot of the wearer, has a smooth top surface with a heel concavity and a varus heel ridge extending transversely from the lateral to the medial side and inclined upward to a high level at the medial side and then continuing medially to the rear end of the heel cup and with a bottom having a solid lateral edge mitigating shock at the initial heel contact and from which radiate circumferentially in a clockwise direction around the heel for an arc of about 30.degree.