Intramedullary interlocking fixation devices for the distal radius
First Claim
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1. An internal fixation device for treating or repairing a distal radius fracture of a patient, the distal radius fracture having a fracture line forming distal and proximal fracture fragments, said device comprising:
- an elongated fixation rod having distal and proximal portions, said distal portion including a head with a laterally extending distal aperture therein, wherein said elongated fixation rod has a curvilinear profile, from an anterior-posterior view, comprising a substantially linear proximal portion configured to axially extend within a medullary canal of the radius, wherein the substantially linear proximal portion defines an axial axis, the axial axis coincident with a centerline of the proximal portion of the rod, wherein the distal aperture is configured to receive a distal fixation member for attachment of said rod to the distal fracture fragment, wherein the rod is configured and sized to reside totally within the radius with the head entirely within a radial styloid region to support and buttress an articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture, and wherein from the anterior-posterior view, the rod curves radially away from the axial axis, distally from the linear portion, substantially following the contour of the distal radius, to position the head at the radial styloid region, and wherein the head has a surface that inclines in an ulnar direction toward the axial axis.
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Abstract
Methods and devices for treating fractures in or adjacent the wrist and distal forearm employ an intramedullary interlocking fixation rod (i.e, it interlocks the distal and proximal fracture fragments together) to stabilize the skeletal structure in a manner which can inhibit the amount of collapse or loss in skeletal length exhibited by a patient with a distal radius fracture.
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Citations
26 Claims
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1. An internal fixation device for treating or repairing a distal radius fracture of a patient, the distal radius fracture having a fracture line forming distal and proximal fracture fragments, said device comprising:
an elongated fixation rod having distal and proximal portions, said distal portion including a head with a laterally extending distal aperture therein, wherein said elongated fixation rod has a curvilinear profile, from an anterior-posterior view, comprising a substantially linear proximal portion configured to axially extend within a medullary canal of the radius, wherein the substantially linear proximal portion defines an axial axis, the axial axis coincident with a centerline of the proximal portion of the rod, wherein the distal aperture is configured to receive a distal fixation member for attachment of said rod to the distal fracture fragment, wherein the rod is configured and sized to reside totally within the radius with the head entirely within a radial styloid region to support and buttress an articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture, and wherein from the anterior-posterior view, the rod curves radially away from the axial axis, distally from the linear portion, substantially following the contour of the distal radius, to position the head at the radial styloid region, and wherein the head has a surface that inclines in an ulnar direction toward the axial axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An internal fixation device for treating or repairing a distal radius fracture of a patient, the distal radius fracture having a fracture line forming distal and proximal fracture fragments, said device comprising:
an elongated fixation rod having distal and proximal portions, the rod comprising a plurality of attachable segments, said distal portion including a head with a laterally extending distal aperture therein, wherein said elongated fixation rod has a curvilinear profile from an anterior-posterior view comprising a substantially linear proximal portion configured to axially extend within a medullary canal of the distal radius and a curved distal portion configured to extend from the proximal portion into a metaphysis region of the distal radius, wherein the substantially linear proximal portion defines an axial axis, the axial axis coincident with a centerline of the proximal portion of the rod, and wherein the distal aperture is configured to receive a distal fixation member for attachment of said rod to the distal fracture fragment, the distal portion of the rod being configured for removable attachment to a drill guide adapted for guiding placement of a fixation member through the rod, wherein the rod is configured and sized to reside totally within the radius with the head entirely within a radial styloid region to support and buttress an articular surface of the distal radius and allow wrist mobility while stabilizing the distal radius fracture, and wherein from the anterior-posterior view, the rod curves radially away from the axial axis, distally from the substantially linear portion, following the contour of the distal radius, to position the head at the radial styloid region, and wherein the head has an end surface that inclines in an ulnar direction toward the axial axis. - View Dependent Claims (21, 22, 23, 24, 25, 26)
Specification