Footwear with orthotic midsole
View Patent ↗Footwear is provided having a midsole platform, a full length insole and a orthotic midsole in the form of an orthotic shell received between the midsole platform and the insole. The orthotic shell has a heel portion to support a heel of a foot of a wearer and a forefoot portion to support a forefoot of the wearer at least in a region behind and near metatarsal heads of the foot. The orthotic shell is shaped to partially cup the heel and support the forefoot in one of a plurality of determined orientations. The footwear may further include a plurality of support plugs to support the orthotic shell in one of the determined orientations and a shank coupled to the midsole platform to increase torsional rigidity of the footwear with respect to a longitudinal length thereof. Methods of making footwear are also provided.
1. A method of making footwear comprising:
enclosing an orthotic shell between a midsole platform and an insole, the insole generally extending about an entire longitudinal length of the footwear and the orthotic shell generally extending about three-quarters of the entire longitudinal length of the footwear, and the orthotic shell having a heel portion to support a heel of a foot of a wearer' foot, a forefoot portion to support a forefoot of the wearer's foot at least in a region behind and near metatarsal heads of the foot and a midfoot portion therebetween to support a midfoot of the wearer's foot; and
providing at least one support plug within the midsole platform at a position to contact a portion of the orthotic shell, the support plug deformable to absorb force when the footwear is in use and having a rigidity greater than a rigidity of the midsole platform.
2. The method of claim 1 wherein enclosing the orthotic shell between the midsole platform and the insole includes enclosing the orthotic shell between the midsole platform in a determined orientation to support the forefoot of the wearer such that, when the footwear is worn, metatarsal heads of the foot are supported in a progressively elevated position from a first side of the foot toward an opposing side thereof relative to a horizontal transverse plane.
3. The method of claim 1 , further comprising:
coupling a shank to the midsole platform, the shank having a front portion, a rear portion and a central portion, the front portion including two projections extending from the central portion, one of the projections generally located along a lateral side of the shank to underlie a region of the midsole platform behind and near a contact area corresponding to the metatarsal head of a fifth metatarsal of a foot of a wearer, and the other one of the projections generally located along a medial side of the shank to underlie a region of the midsole platform behind and near a contact area corresponding to the metatarsal head of a first metatarsal of the foot.
4. The method of claim 3 wherein providing at least one support plug within the midsole platform at a position to contact a portion of the orthotic shell includes providing at least one support plug between each of the projections of the front portion of the shank and a respective portion of the orthotic shell.
5. The method of claim 1 , further comprising:
coupling a shank to the midsole platform, the shank having a front portion, a rear portion and a central portion, the rear portion including two projections extending from the central portion, one of the projections generally located along a lateral side of the footwear and underlying a first area transversely offset from a contact area corresponding to a calcaneous of the foot, and the other one of the projections generally located along a medial side of the footwear and underlying a second area transversely offset from the contact area corresponding to the calcaneous of the foot.
6. The method of claim 5 wherein providing at least one support plug within the midsole platform at a position to contact a portion of the orthotic shell includes providing at least one support plug between each of the projections of the rear portion of the shank and a respective portion of the orthotic shell.
7. The method of claim 1 , further comprising:
coupling a shank to the midsole platform, the shank having a front portion in which a thickness of the front portion generally progressively increases with increasing distance from a first side of the shank to an opposing side thereof to create a forefoot valgus wedge or a forefoot varus wedge.
8. The method of claim 1 wherein providing at least one support plug within the midsole platform at a position to contact a portion of the orthotic shell includes providing a plurality of support plugs each having a durometer greater than the midsole platform to support the orthotic shell in a semi-rigid manner.
9. The method of claim 1 , further comprising:
securing an outsole onto at least a portion of the midsole platform, the outsole having a tread pattern on a lower surface thereof to enhance traction between the footwear and a ground surface.