Bone cutting guide systems and methods
A bone cutting guide may include a support that contains a shaft movable relative to the support. The shaft may carry a guide member having one or more cut guides through which a clinician inserts a cutting member to cut bone positioned under the guide cut guides. In operation, a clinician may fixate the support of the bone cutting guide to a bone and translate the guide member until the one or more cut guides are positioned at a desired cut location. The clinician may then perform a cut through the cut guide. In some examples, the bone cutting guide includes additional components, such as bridging member or secondary cut guide, to provide additional functionality.
1. A bone cutting guide comprising:
a support defining an inner cavity and having a length greater than a width;
a shaft disposed at least partially within the inner cavity; and
a main guide member located on an end of the shaft, wherein the main guide member includes a first guide surface defining a first plane and a second guide surface defining a second plane, and the first plane is parallel to the second plane and extends in a dorsal to plantar direction,
wherein the length of the support is configured to be positioned parallel to a longitudinal axis of a bone to be cut to align the main guide member, and
the shaft is configured to translate within the inner cavity relative to the support in a distal to proximal direction parallel to the length of the support to move the main guide member toward or away from the support.
2. The bone cutting guide of claim 1 , wherein the support includes first and second extensions protruded generally radially out from the support.
3. The bone cutting guide of claim 1 , further comprising a first fixation aperture extending through the support, Wherein a first fixation pin is configured to extend through the first fixation aperture to fixate the support.
4. The bone cutting guide of claim 3 , further comprising a second fixation aperture extending through the support, wherein a second fixation pin is configured to extend through the second fixation aperture to fixate the support.
5. The bone cutting guide of claim 4 , wherein the first fixation aperture and the second fixation aperture are located on opposite ends of the support.
6. The bone cutting guide of claim 1 , further comprising a slot defined on at least a portion of a surface of the support and a securing component configured to translate along the slot relative to the support.
7. The bone cutting guide of claim 6 , further comprising a securing aperture in the shaft configured to receive the securing component such that the shaft can be fixed relative to the support.
8. The bone cutting guide of claim 1 , wherein the main guide member includes first and second blocks, and wherein a fixation aperture extends through the first block and another fixation aperture extends through the second block.
9. The bone cutting guide of claim 1 , further comprising a bridge component attached to the main guide member, wherein the bridge component includes first and second rails extending out from the bridge component in a same direction.
10. The bone cutting guide of claim 9 , wherein the bridge component is disposed between the first guide surface and the second guide surface.
11. The bone cutting guide of claim 9 , further comprising a fixating structure supported on the first and second rails.
12. The bone cutting guide of claim 11 , wherein the fixating structure includes a fifth fixation aperture on one end of the fixating structure and a sixth fixation aperture on an opposite end of the fixating structure.
13. The bone cutting guide of claim 9 , further comprising a secondary guide member supported on the first and second rails.
14. The bone cutting guide of claim 13 , wherein the secondary guide member is supported on the first and second rails at a location along the first and second rails between the fixating structure and the main guide member.
15. The bone cutting guide of claim 13 , wherein the secondary guide member includes a third guide surface defining a third plane and a fourth guide surface defining a fourth plane, and wherein the third plane is parallel to the fourth plane.
16. The bone cutting guide of claim 1 , wherein the first guide surface and the second guide surface each extend perpendicularly relative to the length of the support.
17. A method for cutting bones, the method comprising the steps of:
fixing a support having first and second extensions to a bone by at least positioning the first and second extensions in contact with the bone, inserting an end of a first fixation pin through the support at a first fixation aperture in the support, and fixing the end of the first fixation pin to the bone;
aligning a main guide member to be positioned at a location to be cut; and
making a first cut at the location to be cut by inserting a cutting member through a space defined between a first guide surface of the main guide member and a second guide surface of the main guide member.
18. The method of claim 17 , wherein aligning the main guide member to be positioned at the location to be cut comprises the step of:
adjusting a location of the main guide member relative to a longitudinal axis of the bone, wherein a shaft located at least partially within an inner cavity defined by the support and to which the main guide member is attached is translated relative to the support.
19. The method of claim 18 , further comprising the steps of:
translating a securing component along a slot defined on at least a portion of a surface of the support; and
fixing at least a portion of the securing component within a securing aperture of the shaft such that the shaft is fixed relative to the support.
20. The method of claim 17 , further comprising the step of
attaching a bridge component having first and second rails extending out from the bridge component to the main guide member.
21. The method of claim 20 , wherein the bridge component is attached to the main guide member between the first guide surface and the second guide surface.
22. The method of claim 20 , further comprising the step of:
attaching a fixating structure having a second fixation aperture on one end of the fixation structure and a third fixation aperture on an opposite end of the fixation structure to the first and second rails of the bridge component.
23. The method of claim 22 , further comprising the steps of:
attaching a secondary guide member having a third guide surface and a parallel fourth guide surface to the first and second rails of the bridge component; and
making a second cut by inserting the cutting member through a space defined between the third guide surface and the fourth guide surface.
24. The method of claim 17 , further comprising the steps of:
aligning the main guide member to be positioned at a second location to be cut; and
making a second cut at the second location to be cut by inserting the cutting member through the space defined between the first guide surface of the main guide member and the second guide surface of the main guide member.