Orthotic insole

Abstract

An orthotic insole includes a body positioned in an item of footwear underneath the sole of a foot to support the foot. The upper surface of the insole is contoured provide a medial arch support zone. There is a lateral arch support zone and an anterior arch support zone to provide additional support for the medial, lateral and anterior arches of the mid-foot.

1 . An orthotic insole comprising:
 a body configured to be positioned in an item of footwear underneath a sole of a foot to support the foot, said body having an upper surface contoured to provide additional support for medial, lateral and anterior arches of a mid-foot.   
     
     
         2 . The orthotic insole as claimed, in  claim 1 , wherein the upper surface of the body is contoured to provide a medial arch support zone, a lateral arch support zone and an anterior arch support zone. 
     
     
         3 . The orthotic insole, as claimed in  claim 2 , wherein the medial arch support zone comprises an upwardly and outwardly curving bulge having an inner face angled towards the an outer edge of the body and an outer face extending towards the outer edge of the body from the top edge of the inner face and front and rear ends of the medial arch support zone. 
     
     
         4 . The orthotic insole as claimed in  claim 3 , wherein medial arch support zone is D-shaped in plan view. 
     
     
         5 . The orthotic insole as claimed in  claim 2 , wherein the lateral arch support zone is smoothly domed and ovoid in shape. 
     
     
         6 . The orthotic insole as claimed in  claim 5 , wherein the lateral arch support zone has a flattened outer edge coincident with the outer edge of the body, the front and rear ends of the ovoid being rounded. 
     
     
         7 . The orthotic insole as claimed in  claim 2 , wherein the lateral arch support zone is kidney shaped. 
     
     
         8 . The orthotic insole as claimed in  claim 2 , wherein the anterior arch support zone is a smooth dome. 
     
     
         9 . The orthotic insole as claimed in  claim 8 , wherein the anterior arch support zone extends forwards from within a notch formed between the front end of the medial arch support zone and the front end of the lateral arch support zone. 
     
     
         10 . The orthotic insole as claimed in  claim 8 , wherein the anterior arch support zone has the shape of an ovoid with the longer axis aligned with the front-to-rear axis of the insole body. 
     
     
         11 . The orthotic insole as claimed in  claim 1 , wherein the upper surface of the body is contoured to provide a heel support zone. 
     
     
         12 . The orthotic insole as claimed in  claim 11 , wherein the heel support zone is raised and flat-topped. 
     
     
         13 . The orthotic insole as claimed in  claim 12 , wherein the heel support zone has a rear edge coincident with the curved rear edge of the insole body, the front end forming a triangular point that extends between the rear end of the medial arch support zone and the rear end of the lateral arch support zone. 
     
     
         14 . The orthotic insole as claimed in  claim 1 , wherein the upper surface of the body further comprises a first metatarso-phalange joint support. 
     
     
         15 . The orthotic insole as claimed in  claim 14 , wherein the first metatarso-phalange joint support is a smoothly shaped dome. 
     
     
         16 . The orthotic insole as claimed in  claim 1 , wherein the upper surface of the body further comprises a distal phalange support. 
     
     
         17 . The orthotic insole as claimed in  claim 16 , wherein the distal phalange support is a shaped dome.