Midfoot bone replacement

Abstract

A method of implanting a midfoot replacement in an adult human foot comprising includes removing at least a portion of at least one midfoot bone from the adult human foot. The method also includes inserting a midfoot replacement into the adult human foot such that a proximal side of the midfoot replacement engages at least one of a calcaneus and a talus of the adult human foot, and a distal side of the midfoot replacement engages at least one of a first metatarsal and a fourth metatarsal of the adult human foot.

1 . A method of implanting a midfoot replacement in an adult human foot comprising:
 removing at least a portion of at least one midfoot bone from the adult human foot; and   inserting a midfoot replacement into the adult human foot such that a proximal side of the midfoot replacement engages at least one of a calcaneus and a talus of the adult human foot, and a distal side of the midfoot replacement engages at least one of a first metatarsal and a fourth metatarsal of the adult human foot; and   inserting a first fixating fastener through the midfoot replacement from the proximal side to the distal side, and affixing the first fixating fastener in the talus and the first metatarsal.   
     
     
         2 . The method of  claim 1 , further comprising:
 inserting a second fixating fastener through the midfoot replacement from the proximal side to the distal side, and affixing the second fixating fastener in the calcaneus and the fourth metatarsal.   
     
     
         3 . The method of  claim 1 , further comprising:
 inserting a second fixating fastener through the midfoot replacement from the proximal side to the distal side, and affixing the second fixating fastener in the calcaneus and a metatarsal other than that the first metatarsal.   
     
     
         4 . The method of  claim 1 , wherein removing at least a portion of the at least one midfoot bone comprises removing at least a portion of the navicular and cuneiform bones from the adult human foot. 
     
     
         5 . The method of  claim 4 , wherein removing the at least one midfoot bone further comprises removing at least a portion of the cuboid bone. 
     
     
         6 . The method of  claim 5 , further comprising:
 inserting a second fixating fastener through a second opening through the midfoot replacement from the proximal side to the distal side, and affixing the second fixating fastener in the calcaneus and a metatarsal other than that the first metatarsal.   
     
     
         7 . The method of  claim 1 , wherein the proximal side of the midfoot replacement engages the calcaneus and the talus of the adult human foot, and the distal side of the midfoot replacement engages the first metatarsal and the fourth metatarsal of the adult human foot. 
     
     
         8 . The method of  claim 7 , wherein the midfoot replacement is formed from a solid block of material, and wherein a proximal surface of the midfoot replacement engages the calcaneus and the talus of the adult human foot, and a distal surface of the midfoot replacement engages the first metatarsal and an additional metatarsal of the adult human foot. 
     
     
         9 . The method of  claim 8 , further comprising:
 inserting a second fixating fastener through the midfoot replacement from the proximal side to the distal side, and affixing the second fixating fastener in the calcaneus and a metatarsal other than that the first metatarsal.   
     
     
         10 . The method of  claim 1 , wherein the midfoot replacement is configured to support adult human weight in physical activities when engaging the talus and the calcaneus. 
     
     
         11 . A method of implanting a midfoot replacement in an adult human foot comprising:
 removing at least a majority portion of navicular, cuneiform, and cuboid bones from the adult human foot; and   inserting a midfoot replacement into the adult human foot such that a proximal side of the midfoot replacement engages a calcaneus and a talus of the adult human foot, and a distal side of the midfoot replacement engages a first metatarsal and at least one other metatarsal of the adult human foot.   
     
     
         12 . The method of  claim 11 , further comprising:
 inserting a first fixating fastener through a first opening through the midfoot replacement from the proximal side to the distal side, and affixing the first fixating fastener in the talus and the first metatarsal.   
     
     
         13 . The method of  claim 12 , further comprising:
 inserting a second fixating fastener through a second opening through the midfoot replacement from the proximal side to the distal side, and affixing the second fixating fastener in the calcaneus and the fourth metatarsal.   
     
     
         14 . The method of  claim 12 , further comprising:
 inserting a second fixating fastener through the midfoot replacement from the proximal side to the distal side, and affixing the second fixating fastener in the calcaneus and an additional metatarsal other than that the first metatarsal.   
     
     
         15 . The method of  claim 14 , further comprising:
 inserting a third fixating fastener through the midfoot replacement from the proximal side to the distal side, and affixing the third fixating fastener to a metatarsal other than the first metatarsal and the additional metatarsal.   
     
     
         16 . The method of  claim 14 , further comprising:
 inserting a third fixating fastener into a hole extending partially into the midfoot replacement from the distal side, and affixing the third fixating fastener to a metatarsal other than the first metatarsal and the additional metatarsal.   
     
     
         17 . The method of  claim 14 , further comprising:
 repositioning at least one of the first metatarsal and the additional metatarsal to align the at least one of the first metatarsal and the additional metatarsal with a respective at least one of the first fixating fastener and the second fixating fastener.   
     
     
         18 . The method of  claim 14 , wherein the midfoot replacement is formed from a solid block of material, and wherein a proximal surface of the midfoot replacement engages the calcaneus and the talus of the adult human foot, and a distal surface of the midfoot replacement engages the first metatarsal and an additional metatarsal of the adult human foot. 
     
     
         19 . The method of  claim 14 , wherein inserting the first fixating fastener using beaming. 
     
     
         20 . The method of  claim 11 , wherein the midfoot replacement is configured to support adult human weight in physical activities when engaging the talus and the calcaneus.