Indexed tri-planar osteotomy guide and method
AssigneeCrossroads Extremity Systems, LLC
InventorsT. Wade Fallin, Daniel J. Triplett, Robert W. Hoy
Life of this patent
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Abstract
Methods and devices for performing an osteotomy produce a bone cut producing a multi-planar change in the alignment of a bone portion by rotating it relative to another bone portion.
Claims18
An osteotomy system operable to guide the formation of a tri-planar rotational osteotomy between a proximal portion of a metatarsal bone and a distal portion of the metatarsal bone, the tri-planar rotational osteotomy being operable to establish an orientation between the proximal and distal portions of the metatarsal bone incorporating coupled changes in at least two of the intermetatarsal angle, pronation, and plantar flexion of the distal portion of the metatarsal bone, the osteotomy system comprising:
- a set of cutter guides, each member of the set of cutter guides comprising:
- reference features operable to align the cutter guide with the metatarsal bone in a predetermined position;
- and
- one or more cutter guiding features each defining an osteotomy plane or rotation axis relative to the metatarsal bone, the osteotomy plane or rotation axis corresponding to fixed changes in at least two of intermetatarsal angle, pronation, and plantar flexion of the distal portion of the metatarsal bone, at least one of the change in intermetatarsal angle, pronation, and plantar flexion being user selectable among a plurality of values at the time of surgery,
- wherein each member of the set of cutter guides has a fixed value for at least one of the change in intermetatarsal angle, pronation, and plantar flexion that is different from that of another member of the set of cutter guides;
- and
- a cutter operable to be guided by one of the one or more cutter guiding features to cut the metatarsal bone to mobilize the proximal portion of the metatarsal bone and the distal portion of the metatarsal bone relative to one another and produce cut surfaces on which the distal portion of the metatarsal bone and the proximal portion of the metatarsal bone are relatively rotatable.
An osteotomy system operable to guide the formation of a tri-planar rotational osteotomy between a proximal portion of a metatarsal bone and a distal portion of the metatarsal bone, the osteotomy system comprising:
- at least one cutter guide comprising:
- reference features operable to align the cutter guide with the metatarsal bone in a predetermined position;
- at least two cutter guiding features each defining an osteotomy plane or rotation axis relative to the metatarsal bone, the osteotomy plane or rotation axis corresponding to fixed changes in at least two of intermetatarsal angle, pronation, and plantar flexion of the distal portion of the metatarsal bone, the at least two cutter guiding features defining osteotomy planes that are angled relative to one another in at least two rotational degrees of freedom;
- and
- indicia printed on a guide body of the at least one cutter guide indicating that the at least one cutter guide is configured for a right foot or for a left foot.
Dependencies are inferred from the claim text.