Platform fracture fixation implants

Abstract

A proximal portion of an implant for repairing a multipart fracture of a proximal humerus includes an asymmetric body having a proximal end, a distal end, a medial side, a lateral side, an anterior edge, and a posterior edge a medial surface extending along Sat least a portion of the medial side and having a proximal end and a distal end; a protrusion forming the lateral side of the asymmetric body, offset in an anterior direction, and pointing toward a bicipital groove of the humerus when the proximal portion is implanted in the humerus, an anterior support surface configured to support a lesser tuberosity; a posterior support surface configured to support a greater tuberosity; an angled surface having a first side defined by the medial surface, a second side defined by the anterior support surface, and a third side defined by the posterior support surface; and an anchoring point.

1 .- 18 . (canceled) 
     
     
         19 . A humeral head support for use in an implant for repairing a multipart fracture of a proximal end of a humerus of a human, the humeral head support comprising:
 a base portion configured for attachment to a proximal end of the implant; and   a support portion configured to support a humeral head of the humerus during a repair of a four-part fracture of the humerus,
 wherein the support portion extends from the base portion in a direction such that the base portion is configured to extend from the base portion diagonally in a medial and distal direction when the base portion is attached to the proximal end of the implant and when the implant is implanted so as to be surrounded by bone within a proximal volume of the humerus, and 
 wherein the support portion is positioned with respect to the base portion so as to be positioned between the humeral head of the humerus and a lesser tuberosity of the humerus so as to support the humeral head of the humerus when the implant is implanted so as to be surrounded by bone during a repair of a four-part fracture of the humerus. 
   
     
     
         20 . The humeral head support of  claim 19 ,
 wherein the humeral head support has a medial surface, a lateral surface opposite the medial surface of the humeral head support, a proximal end, a distal end opposite the distal end of the humeral head support, and at least one anchoring point configured to engage an anchoring device, and   wherein the base portion configured for attachment to the proximal end of the implant includes the proximal end of the humeral head support having a profile that is complementary to a surface of the proximal portion of the implant when the lateral surface of the humeral head support is positioned adjacent the surface of the proximal portion of the implant.   
     
     
         21 . The humeral head support of  claim 19 , further comprising at least one anchoring point. 
     
     
         22 . The humeral head support of  claim 21 , wherein the at least one anchoring point includes at least one threaded hole configured to receive at least one screw. 
     
     
         23 . The humeral head support of  claim 19 , wherein the humeral head support has a length that is in a range of from 10 millimeters to 60 millimeters. 
     
     
         24 . The humeral head support of  claim 19 , wherein the humeral head support has a width that is in a range of from 5 millimeters to 35 millimeters. 
     
     
         25 . The humeral head support of  claim 19 , wherein the base portion is configured to be coupled to a triangular surface of the proximal end of the implant. 
     
     
         26 . The humeral head support of  claim 19 , wherein the base portion is configured to be coupled to a cylindrical intramedullary nail. 
     
     
         27 . A kit, comprising:
 a plurality of humeral head supports configured for use in an implant for repairing a multipart fracture of a proximal end of a humerus of a human, wherein each humeral head support of the plurality of humeral head supports comprises:
 a base portion configured for attachment to a proximal end of the implant; and 
 a support portion configured to support a humeral head of the humerus during a repair of a four-part fracture of the humerus,
 wherein the support portion extends from the base portion in a direction such that the base portion is configured to extend from the base portion diagonally in a medial and distal direction when the base portion is attached to the proximal end of the implant and when the implant is implanted so as to be surrounded by bone within a proximal volume of the humerus, and 
 wherein the support portion is positioned with respect to the base portion so as to be positioned between the humeral head of the humerus and a lesser tuberosity of the humerus so as to support the humeral head of the humerus when the implant is implanted so as to be surrounded by bone during a repair of a four-part fracture of the humerus. 
 
   
     
     
         28 . The kit of  claim 27 , wherein a first humeral head support of the plurality of humeral head supports and a second humeral head support of the plurality of humeral head supports are shaped differently from one another. 
     
     
         29 . The kit of  claim 28 , wherein the base portion of the first humeral head support is configured to be coupled to a triangular surface of the proximal end of the implant, and wherein the base portion of the second humeral head support is configured to be coupled to a cylindrical intramedullary nail. 
     
     
         30 . The kit of  claim 27 , wherein a first humeral head support of the plurality of humeral head supports and a second humeral head support of the plurality of humeral head supports are sized differently from one another. 
     
     
         31 . The kit of  claim 30 , wherein the first humeral head support and the second humeral head support have different lengths from one another. 
     
     
         32 . The kit of  claim 30 , wherein the first humeral head support and the second humeral head support have different widths from one another. 
     
     
         33 . The kit of  claim 30 ,
 wherein each humeral head support of the plurality of humeral head supports has a medial surface, a lateral surface opposite the medial surface of the humeral head support, a proximal end, a distal end opposite the distal end of the humeral head support, and at least one anchoring point configured to engage an anchoring device, and   wherein the base portion of each humeral head support of the plurality of humeral head supports configured for attachment to the proximal end of the implant includes the proximal end of the humeral head support having a profile that is complementary to a surface of the proximal portion of the implant when the lateral surface of the humeral head support is positioned adjacent the surface of the proximal portion of the implant.   
     
     
         34 . The kit of  claim 30 , wherein at least one humeral head support of the plurality of humeral head supports further comprises at least one anchoring point. 
     
     
         35 . The kit of  claim 34 , wherein the at least one anchoring point includes at least one threaded hole configured to receive at least one screw.