Ankle replacement system and method
View Patent ↗Various surgical devices and methods are disclosed herein. Also disclosed is multi-component prosthesis, which can be used as an ankle prosthesis. One of the disclosed surgical alignment systems includes a guide arm, a ratchet arm frame configured to be coupled slidably to the guide arm, a ratchet arm configured to be coupled to the ratchet arm frame, and a sagittal sizing guide body configured to be coupled to the ratchet arm. The sagittal sizing guide body includes a first radiopaque object disposed at a first position and a second radiopaque object disposed at a second position that is spaced apart from the first position.
1. A system, comprising:
a first surgical tool including a body having a first bone-contacting side and a second side that is disposed opposite the first bone-contacting side, the first bone-contacting side including a patient-specific surface sized and configured to be coupled to a first bone of a patient, the second side of the body including a pin holder extending from a superior portion of the second side in a direction away from the second side, the pin holder defining a hole therethrough that defines an axis that is parallel to an axis related to the first bone, the hole sized and configured to receive a pin therein, wherein the body defines a first set of holes that extend through an inferior portion of the body.
2. The system of claim 1 , wherein the first surgical tool includes a pin disposed within the hole, the pin formed from a radiopaque material.
3. The system of claim 1 , further comprising a second surgical tool defining a second set of holes, wherein a position of the first set of holes defined by the first surgical tool correspond to a position of the second set of holes defined by the second surgical tool.
4. The system of claim 1 , wherein the bone comprises a tibia.
5. The system of claim 4 , wherein the axis is a longitudinal axis of the tibia.
6. The system of claim 1 , wherein the axis is a mechanical axis.
7. The system of claim 1 , wherein the patient-specific surface is configured to mate with a distal end of a tibia.
8. The system of claim 1 , further comprising a second surgical tool, wherein the first set of holes are positioned with respect to the body of the first surgical tool such that they provide a guide for orienting a placement of the second surgical tool once the first surgical tool has been removed from an engagement with a first set of pins received within the first set of holes.
9. The system of claim 1 , wherein the superior portion of the body defines a third set of holes.
10. The system of claim 9 , wherein the pin holder is located between at least two of the third set of holes on the superior portion of the first surgical instrument.
11. A method comprising:
placing a guide having a patient-specific surface on a first bone, the guide including a pin holder that engages a pin that extends in a direction that is parallel to an axis related to the first bone, wherein the first bone is a tibia, and wherein the axis is at least one of a mechanical axis and an anatomical axis; and
inserting a plurality of pins into a pair of spaced apart holes defined by the guide.
12. The method of claim 11 , further comprising:
sliding the guide along the plurality of pins to remove the guide from contacting the first bone; and
sliding a conversion instrument over a first subset of the plurality of pins.