US20220218491A1 - Modular talar fixation method and system - Google Patents
Modular talar fixation method and system Download PDFInfo
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- US20220218491A1 US20220218491A1 US17/657,834 US202217657834A US2022218491A1 US 20220218491 A1 US20220218491 A1 US 20220218491A1 US 202217657834 A US202217657834 A US 202217657834A US 2022218491 A1 US2022218491 A1 US 2022218491A1
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- fastener
- head
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- Abandoned
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- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000003278 mimic effect Effects 0.000 abstract description 4
- 210000004233 talus Anatomy 0.000 description 13
- 210000003423 ankle Anatomy 0.000 description 10
- 210000002303 tibia Anatomy 0.000 description 10
- 210000000544 articulatio talocruralis Anatomy 0.000 description 8
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Images
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Definitions
- An ankle joint may become severely damaged and painful due to arthritis, prior ankle surgery, bone fracture, osteoarthritis, and/or one or more additional conditions.
- Options for treating the injured ankle have included anti-inflammatory and pain medications, braces, physical therapy, joint arthrodesis, and total ankle replacement.
- Total ankle replacement generally comprises two components—tibial implant and a talar implant.
- the implants comprise articulation surfaces sized and configured to mimic the range of motion of the ankle joint.
- the talar implant may comprise an implant sized and configured to mimic the talar dome and the tibial implant may comprise an articulation surface sized and configured to mimic articulation of the tibia.
- An articulating component may be located between the talar implant and the tibial implant.
- Installation of a total ankle replacement can include forming one or more holes or cuts in a bone. For example, a hole may be drilled through the talus and into the tibia to create a channel for inserting a tibial stem. In some installations, additional bone is removed from the talus to make space for a talar stem extending from the talar portion.
- a talar implant system in various embodiments, includes an implant having a body including a bone contact surface and an articulation surface located opposite the bone contact surface.
- the body defines at least one fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis.
- a fastener is sized and configured to be partially received within a distal end of the at least one fastener hole at a first angle with respect to the longitudinal axis of the fastener hole.
- a fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole, wherein the fastener cap couples the body to the fastener.
- a total joint replacement system includes a tibial implant sized and configured to couple to a resected tibia and a talar implant sized and configured to couple to a resected talus.
- the talar implant includes a body having a bone contact surface and an articulation surface located opposite the bone contact surface.
- the body defines at least one fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis.
- the at least one fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole.
- a fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole. The fastener cap couples the body to the fastener.
- a talar implant comprises a body including a bone contact surface and an articulation surface located opposite the bone contact surface.
- the body defines at least one angled fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis.
- the at least one angled fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole.
- a fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole to couple the body to the fastener.
- FIG. 1 illustrates an anatomic view of an ankle joint.
- FIG. 2 illustrates one embodiment of an ankle joint having a total ankle replacement system therein.
- FIG. 3 illustrates one embodiment of an implant having one or more angled fastener holes formed through an articulation surface.
- FIG. 4 illustrates a bottom-view of the implant of FIG. 3 .
- FIG. 5 illustrates a cross-sectional view of the implant of FIG. 3 taken along line 5 - 5 in FIG. 4 .
- FIG. 6 illustrates a cross-sectional view of a fastener cap having an internally threaded cavity, in accordance with some embodiments.
- FIG. 7 illustrates a fastener having a threaded head, in accordance with some embodiments.
- the present disclosure generally provides an implant for use with a total ankle replacement system.
- the implant includes one or more variable angle screw holes extending through the articulation surface of the implant at an angle with respect to a bone contact surface.
- a cap and/or retainer can be installed over the screws to couple the screws to the implant.
- FIG. 1 illustrates an anatomic view of an ankle joint 2 .
- the ankle joint 2 comprises a talus 4 in contact with a tibia 6 and a fibula 8 .
- a calcaneus 10 is located adjacent to the talus 4 .
- the talus 4 and the tibia 6 may be resected, or cut, to allow insertion of a talar implant and a tibial implant.
- FIG. 2 illustrates the ankle joint 2 of FIG. 1 having a total ankle replacement system 12 inserted therein.
- the total ankle replacement system 12 comprises a talar implant 14 and a tibial implant 18 .
- the talar implant 14 comprises a body defining a talar articulation surface 16 (or talar dome).
- the talar implant 14 may be anchored to the talus by one or more screws (not shown).
- the tibial implant 18 is sized and configured for installation into the tibia 6 .
- the tibial implant 18 comprises a body having an articulation surface 20 and, in some embodiments, a tibial stem 24 extending into the tibia 6 to anchor the tibial implant 18 .
- the talar joint surface 16 and the tibial joint surface 20 are mutually sized and configured to articulate.
- the joint surfaces 16 , 20 replace the natural ankle joint surfaces, which are removed, to restore a range of motion that mimics the natural joint.
- One or more holes may be formed in the tibia and/or the talus prior to and during insertion of the tibial implant 18 or the talar implant 12 .
- a hole is drilled starting in the bottom of the talus, extending through the talus and into the tibia.
- the hole may comprise, for example, a 6 mm hole configured to receive the stem 24 of the tibial implant 18 .
- the joint surfaces 16 , 20 may be made of various materials, such as, for example, polyethylene, high molecular weight polyethylene (HMWPE), rubber, titanium, titanium alloys, chrome cobalt, surgical steel, and/or any other suitable metal, ceramic, sintered glass, artificial bone, and/or any combination thereof.
- the joint surfaces 16 , 20 may comprise different materials.
- the tibial joint surface 20 may comprise a plastic or other non-metallic material and the talar joint surface 16 may comprise a metal surface.
- any suitable combination of materials may be used.
- FIG. 3 illustrates one embodiment of an implant 102 having one or more fastener holes 110 a , 110 b formed through an articulation surface 106 .
- the implant 102 comprises a body 104 having an articulation surface 106 and an opposed bone contact surface 108 .
- the body 104 has a predetermined thickness between the articulation surface 106 and the bone contact surface 108 .
- the predetermined thickness can be constant and/or variable.
- the articulation surface 106 is sized and configured to interface with an opposing joint surface of an opposing implant.
- the articulation surface 106 is sized and configured to interface with a joint surface of a tibial implant, such as, for example, the tibial implant 18 shown in FIG. 2 .
- the articulation surface 106 is sized and configured to interface with an articulation body located between a tibial implant 18 and the talar dome 106 .
- the bone contact surface 108 comprises a surface configured to contact a resected bone section.
- the bone contact surface 108 is configured to rest on and couple to a resected talus.
- the bone contact surface 108 is configured to couple to a plate anchored to the bone.
- the bone contact surface 108 may comprise a planar surface, a concave surface, and/or any desirably shaped surface.
- the bone contact surface 108 comprises a concave surface.
- the implant 102 comprises one or more fastener holes 110 a , 110 b extending through the body 104 .
- the fastener holes 110 a , 110 b extend from the articulation surface 106 through the body 104 to the bone contact surface 108 .
- the fastener holes 110 a , 110 b are sized and configured to receive a fastener 114 therein.
- the fastener 114 comprises a head 118 and a threaded section 120 .
- the threaded section 120 is configured to couple to a bone, such as, for example, a talus and/or a plate.
- the fastener 114 may include any number of threads on the threaded section 120 and/or on the head 118 .
- the fastener 114 may comprise a screw (such as a bone screw, a slotted screw, and/or any other suitable screw), a peg (such as a coated and/or an uncoated peg) and/or any other suitable fastener.
- the fastener holes 110 a , 110 b may define one or more internal thread patterns 112 .
- the fastener holes 110 a , 110 b can be formed through the body 104 at any suitable angle.
- the fastener holes 110 a , 110 b are formed through the articulation surface 106 at an angle of about 0°, e.g., the fastener holes 110 a , 110 b have a longitudinal axis substantially perpendicular with a tangent line of the curve of the articulation surface 106 at a center of the fastener hole 110 a , 110 b .
- the fastener holes 110 a , 110 b may be formed at any angle with respect to the articulation surface.
- the fastener holes 110 a , 110 b can include longitudinal axes positioned at any angle with respect to a tangent line of the curve of the articulation surface 106 , such as, for example, an angle between 0 and 30 degrees, 0 and 45 degrees, 0 and 60 degrees, or 0 and 90 degrees.
- an angle between 0 and 30 degrees, 0 and 45 degrees, 0 and 60 degrees, or 0 and 90 degrees may be formed in the body 104 at any angle with respect to the articulation surface 106 and/or the bone contact surface 108 .
- the fastener 114 is sized and configured to be inserted into the fastener holes 110 a , 110 b at an angle with respect to a longitudinal axis of the fastener holes 110 a , 110 b .
- the fastener 114 may be inserted at an angle of between 0 and 90 degrees, such as, for example, 30 degrees, 45 degrees, or 60 degrees.
- the angle between the fastener 114 and the longitudinal axis of the fastener hole 110 a , 110 b is predetermined. In other embodiments, the angle between the fastener 114 and the longitudinal axis of the holes 110 a , 110 b is variable and/or selectable within a predetermined range.
- a clinician may select an angle for the fastener during installation of the implant 102 .
- specific angles are given herein as examples, it will be appreciated by those skilled in the art that the fasteners 114 may be inserted into the fastener holes 110 a , 110 b at any suitable angle with respect to the longitudinal axis of the fastener holes 110 a , 110 b .
- the angles of the fasteners 114 in each of the fastener holes 110 a , 110 b are the same.
- the angles of fasteners 114 in each of the angled fastener holes 110 a , 110 b are different.
- the fastener holes 110 a , 110 b comprise a diameter larger than the diameter of a head 118 of the fastener 114 .
- the fasteners 114 can freely slide through the angled fastener holes 110 a , 110 b and do not interface with internal threads 112 of the holes 110 a , 110 b .
- the fasteners 114 can be inserted into a specific position in a bone prior to installation of the implant 102 . After the fasteners 114 are positioned, the implant 102 is placed on the bone such that the fasteners 114 are located within the fastener holes 110 a , 110 b .
- the fasteners 114 may be installed through the fastener holes 110 a , 110 b after the implant 102 is positioned on a bone. After positioning the fasteners 114 within the fastener holes 110 a , 110 b , a fastener cap 116 can be inserted into a proximal end of each of the fastener holes 110 a , 110 b to secure the body 104 to the fasteners 114 .
- the fastener cap 116 includes external threads configured to mate with the internal threads 112 of the fastener holes 110 a , 110 b .
- the fastener cap 116 includes a cavity 122 at a distal end configured to interface with a head 118 of the fastener 114 .
- the fastener cap 116 acts as a set screw that maintains the implant 102 and the fastener 114 in a locked relationship.
- the cavity 122 of the fastener cap 116 a includes internal threads 130 sized and configured to couple to threads 132 formed on the head 118 a of a fastener.
- the fastener cap 116 is sized and configured to be flush with the articulation surface 106 when in a locked position, e.g., fully inserted into the fastener hole 110 a , 110 b . In some embodiments, the fastener cap 116 is sized and configured to sit below the articulation surface 106 when in a locked position. An additional articulation cap (not shown) may be inserted over the fastener cap 116 to fill the fastener hole 110 a , 110 b and provide a solid, smooth articulation surface 106 . In some embodiments, the fastener cap 116 extends beyond the articulation surface 106 when in a locked position.
- the fastener cap 116 may operate as a rotational stop for an implant placed in an articulating arrangement with the articulation surface 106 .
- the fastener cap 116 may operate as a rotational stop for a tibial implant in an articulating relationship with the implant 102 .
- FIG. 5 illustrates the a cross-sectional view of the implant 102 taken along line 5 - 5 of FIG. 4 .
- the fastener 114 has a diameter less than the internal diameter of the holes 110 a , 110 b such that the fastener 114 fits within the holes 110 a , 110 b at a variable angle without interfacing with and/or contacting the internal threads 112 of the hole 110 a , 110 b .
- a fastener cap 116 can be inserted into a proximal end of the hole 110 a , 110 b .
- the fastener cap 116 includes a distal cavity 122 sized and configured to receive a fastener head 118 therein.
- the fastener cap 116 locks the implant 102 to the fastener 114 such that the fastener 114 and the fastener cap 116 maintain the implant 102 in a fixed position with respect to a bone.
- the fastener hole 110 a , 110 b comprises a lip 124 formed at a distal end to prevent the fastener cap 116 from being inserted beyond a predetermined depth.
- the distal lip 124 may correspond to a fully locked position of the fastener cap 116
- the fastener 114 can be positioned at a predetermined angle with respect to the bone contact surface 108 of the talar dome 102 .
- the fastener 114 is inserted into the bone at an angle with respect to a longitudinal axis of the fastener hole 110 a , 110 b .
- the fastener 114 may be inserted at any suitable angle with respect to the longitudinal axis of the hole 110 a , 110 b , such as, for example, any angle between 0 and 90 degrees, 0 and 60 degrees, 0 and 45 degrees, 0 and 30 degrees, and/or any other suitable angle.
- the head 118 of the fastener 114 and/or the cavity 122 of the fastener cap 116 are sized and configured to allow the fastener cap 116 and the fastener 114 to interface at a variety of angles.
- the head 118 of the fastener 114 includes a rounded, or ball-type, head.
- the cavity 122 is a socket-type cavity configured to interface with the head 118 of the fastener 114 .
- the ball-and-socket coupling allows the fastener 114 to be placed at a variety of angles with respect to the talar dome 102 and coupled to the talar dome 102 by the fastener cap 116 .
- the fastener 114 may comprise any suitable fixation device, such as, for example, a screw, a peg, a coated peg, a slotted screw, a push-fit fastener, and/or any other suitable fastener.
- the implant 102 is shown having two angled fastener holes 110 a , 110 b located on a first side of the articulation surface 106 , it will be appreciated that the implant 102 may comprise any suitable number of fastener holes 110 a , 110 b such as, for example, one, two, or four fastener holes 110 a , 110 b .
- the fastener holes 110 a , 110 b may be located in any suitable position on the articulation surface 106 , such as, for example, on the same side (as shown in FIG. 1 ), on opposite sides, and/or on multiple sides of the articulation surface.
- an implant system in various embodiments, includes an implant having a body including a bone contact surface and an articulation surface located opposite the bone contact surface.
- the body defines at least one fastener hole extending from the articulation surface to the bone contact surface along a longitudinal axis.
- a fastener is sized and configured to be partially received within a distal end of the at least one fastener hole at a first angle with respect to the longitudinal axis of the fastener hole.
- a fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole, wherein the fastener cap couples the body to the fastener.
- the at least one fastener hole comprises a plurality of internal threads.
- the fastener can have a first diameter less than a diameter of the internal threads of the fastener hole.
- the fastener cap includes a plurality of external threads sized and configured to couple to the internal threads of the at least one fastener hole.
- the fastener cap can include a distal cavity sized and configured to receive a head of the fastener therein.
- the distal cavity comprises a socket and the head of the fastener comprises a ball.
- the distal cavity defines a plurality of internal threads and the head of the fastener defines a plurality of external threads sized and configured to interface with the plurality of internal threads of the distal cavity.
- the fastener can comprise a bone screw.
- a total joint replacement system includes a tibial implant sized and configured to couple to a resected tibia and a talar implant sized and configured to couple to a resected talus.
- the talar implant includes a body having a bone contact surface and an articulation surface located opposite the bone contact surface.
- the body defines at least one fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis.
- the at least one fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole.
- a fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole. The fastener cap couples the body to the fastener.
- the at least one fastener hole comprises a plurality of internal threads.
- the fastener can have a first diameter less than a diameter of the internal threads of the fastener hole.
- the fastener cap includes a plurality of external threads sized and configured to couple to the internal threads of the at least one fastener hole.
- the fastener cap can include a distal cavity sized and can be configured to receive a head of the fastener therein.
- the distal cavity comprises a socket and the head of the fastener comprises a ball.
- the distal cavity defines a plurality of internal threads and the head of the fastener defines a plurality of external threads sized and configured to interface with the plurality of internal threads of the distal cavity.
- the fastener can comprise a bone screw.
- a talar implant comprises a body including a bone contact surface and an articulation surface located opposite the bone contact surface.
- the body defines at least one angled fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis.
- the at least one angled fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole.
- a fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole to couple the body to the fastener.
- the at least one fastener hole comprises a plurality of internal threads.
- the fastener can have a first diameter less than a diameter of the internal threads of the fastener hole.
- the fastener cap can comprise a plurality of external threads sized and configured to couple to the internal threads of the at least one fastener hole.
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Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 16/410,387, filed May 13, 2019, which is a continuation of U.S. patent application Ser. No. 15/848,934, filed Dec. 20, 2017 (U.S. Pat. No. 10,327,906), which is a continuation of U.S. patent application Ser. No. 14/835,208, filed Aug. 25, 2015 (U.S. Pat. No. 9,877,839), the entireties of which are incorporated herein by reference.
- An ankle joint may become severely damaged and painful due to arthritis, prior ankle surgery, bone fracture, osteoarthritis, and/or one or more additional conditions. Options for treating the injured ankle have included anti-inflammatory and pain medications, braces, physical therapy, joint arthrodesis, and total ankle replacement.
- Total ankle replacement generally comprises two components—tibial implant and a talar implant. The implants comprise articulation surfaces sized and configured to mimic the range of motion of the ankle joint. For example, the talar implant may comprise an implant sized and configured to mimic the talar dome and the tibial implant may comprise an articulation surface sized and configured to mimic articulation of the tibia. An articulating component may be located between the talar implant and the tibial implant.
- Installation of a total ankle replacement can include forming one or more holes or cuts in a bone. For example, a hole may be drilled through the talus and into the tibia to create a channel for inserting a tibial stem. In some installations, additional bone is removed from the talus to make space for a talar stem extending from the talar portion.
- In various embodiments, a talar implant system is disclosed. The talar implant system includes an implant having a body including a bone contact surface and an articulation surface located opposite the bone contact surface. The body defines at least one fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis. A fastener is sized and configured to be partially received within a distal end of the at least one fastener hole at a first angle with respect to the longitudinal axis of the fastener hole. A fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole, wherein the fastener cap couples the body to the fastener.
- In various embodiments, a total joint replacement system is disclosed. The total joint replacement system includes a tibial implant sized and configured to couple to a resected tibia and a talar implant sized and configured to couple to a resected talus. The talar implant includes a body having a bone contact surface and an articulation surface located opposite the bone contact surface. The body defines at least one fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis. The at least one fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole. A fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole. The fastener cap couples the body to the fastener.
- In various embodiments, a talar implant is disclosed. The talar implant comprises a body including a bone contact surface and an articulation surface located opposite the bone contact surface. The body defines at least one angled fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis. The at least one angled fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole. A fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole to couple the body to the fastener.
- The features and advantages of the present invention will be more fully disclosed in, or rendered obvious by the following detailed description of the preferred embodiments, which are to be considered together with the accompanying drawings wherein like numbers refer to like parts and further wherein:
-
FIG. 1 illustrates an anatomic view of an ankle joint. -
FIG. 2 illustrates one embodiment of an ankle joint having a total ankle replacement system therein. -
FIG. 3 illustrates one embodiment of an implant having one or more angled fastener holes formed through an articulation surface. -
FIG. 4 illustrates a bottom-view of the implant ofFIG. 3 . -
FIG. 5 illustrates a cross-sectional view of the implant ofFIG. 3 taken along line 5-5 inFIG. 4 . -
FIG. 6 illustrates a cross-sectional view of a fastener cap having an internally threaded cavity, in accordance with some embodiments. -
FIG. 7 illustrates a fastener having a threaded head, in accordance with some embodiments. - The description of the exemplary embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description, relative terms such as “lower,” “upper,” “horizontal,” “vertical,” “proximal,” “distal,” “above,” “below,” “up,” “down,” “top” and “bottom,” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description and do not require that the apparatus be constructed or operated in a particular orientation. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected,” refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
- In various embodiments, the present disclosure generally provides an implant for use with a total ankle replacement system. The implant includes one or more variable angle screw holes extending through the articulation surface of the implant at an angle with respect to a bone contact surface. A cap and/or retainer can be installed over the screws to couple the screws to the implant.
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FIG. 1 illustrates an anatomic view of anankle joint 2. Theankle joint 2 comprises atalus 4 in contact with atibia 6 and afibula 8. Acalcaneus 10 is located adjacent to thetalus 4. In total ankle replacements, thetalus 4 and thetibia 6 may be resected, or cut, to allow insertion of a talar implant and a tibial implant.FIG. 2 illustrates theankle joint 2 ofFIG. 1 having a totalankle replacement system 12 inserted therein. - The total
ankle replacement system 12 comprises atalar implant 14 and atibial implant 18. Thetalar implant 14 comprises a body defining a talar articulation surface 16 (or talar dome). Thetalar implant 14 may be anchored to the talus by one or more screws (not shown). Thetibial implant 18 is sized and configured for installation into thetibia 6. Thetibial implant 18 comprises a body having anarticulation surface 20 and, in some embodiments, atibial stem 24 extending into thetibia 6 to anchor thetibial implant 18. Thetalar joint surface 16 and thetibial joint surface 20 are mutually sized and configured to articulate. Thejoint surfaces tibial implant 18 or thetalar implant 12. For example, in some embodiments, a hole is drilled starting in the bottom of the talus, extending through the talus and into the tibia. The hole may comprise, for example, a 6 mm hole configured to receive thestem 24 of thetibial implant 18. - The joint surfaces 16, 20 may be made of various materials, such as, for example, polyethylene, high molecular weight polyethylene (HMWPE), rubber, titanium, titanium alloys, chrome cobalt, surgical steel, and/or any other suitable metal, ceramic, sintered glass, artificial bone, and/or any combination thereof. The joint surfaces 16, 20 may comprise different materials. For example, the tibial
joint surface 20 may comprise a plastic or other non-metallic material and the talarjoint surface 16 may comprise a metal surface. Those skilled in the art will recognize that any suitable combination of materials may be used. -
FIG. 3 illustrates one embodiment of animplant 102 having one or more fastener holes 110 a, 110 b formed through anarticulation surface 106. Theimplant 102 comprises abody 104 having anarticulation surface 106 and an opposedbone contact surface 108. Thebody 104 has a predetermined thickness between thearticulation surface 106 and thebone contact surface 108. The predetermined thickness can be constant and/or variable. Thearticulation surface 106 is sized and configured to interface with an opposing joint surface of an opposing implant. For example, in one embodiment, thearticulation surface 106 is sized and configured to interface with a joint surface of a tibial implant, such as, for example, thetibial implant 18 shown inFIG. 2 . In another example, thearticulation surface 106 is sized and configured to interface with an articulation body located between atibial implant 18 and thetalar dome 106. Thebone contact surface 108 comprises a surface configured to contact a resected bone section. For example, in some embodiments, thebone contact surface 108 is configured to rest on and couple to a resected talus. In other embodiments, thebone contact surface 108 is configured to couple to a plate anchored to the bone. Thebone contact surface 108 may comprise a planar surface, a concave surface, and/or any desirably shaped surface. For example, in the illustrated embodiment, thebone contact surface 108 comprises a concave surface. - In various embodiments, the
implant 102 comprises one or more fastener holes 110 a, 110 b extending through thebody 104. The fastener holes 110 a, 110 b extend from thearticulation surface 106 through thebody 104 to thebone contact surface 108. The fastener holes 110 a, 110 b are sized and configured to receive afastener 114 therein. In some embodiments, thefastener 114 comprises ahead 118 and a threadedsection 120. The threadedsection 120 is configured to couple to a bone, such as, for example, a talus and/or a plate. Although a single thread is illustrated, it will be appreciated that thefastener 114 may include any number of threads on the threadedsection 120 and/or on thehead 118. In various embodiments, thefastener 114 may comprise a screw (such as a bone screw, a slotted screw, and/or any other suitable screw), a peg (such as a coated and/or an uncoated peg) and/or any other suitable fastener. The fastener holes 110 a, 110 b may define one or moreinternal thread patterns 112. - The fastener holes 110 a, 110 b can be formed through the
body 104 at any suitable angle. For example, in the illustrated embodiment, the fastener holes 110 a, 110 b are formed through thearticulation surface 106 at an angle of about 0°, e.g., the fastener holes 110 a, 110 b have a longitudinal axis substantially perpendicular with a tangent line of the curve of thearticulation surface 106 at a center of thefastener hole articulation surface 106, such as, for example, an angle between 0 and 30 degrees, 0 and 45 degrees, 0 and 60 degrees, or 0 and 90 degrees. Although specific angles are given herein as examples, it will be appreciated by those skilled in the art that the fastener holes 110 a, 110 b may be formed in thebody 104 at any angle with respect to thearticulation surface 106 and/or thebone contact surface 108. - In some embodiments, the
fastener 114 is sized and configured to be inserted into the fastener holes 110 a, 110 b at an angle with respect to a longitudinal axis of the fastener holes 110 a, 110 b. For example, in some embodiments, thefastener 114 may be inserted at an angle of between 0 and 90 degrees, such as, for example, 30 degrees, 45 degrees, or 60 degrees. In some embodiments, the angle between thefastener 114 and the longitudinal axis of thefastener hole fastener 114 and the longitudinal axis of theholes implant 102. Although specific angles are given herein as examples, it will be appreciated by those skilled in the art that thefasteners 114 may be inserted into the fastener holes 110 a, 110 b at any suitable angle with respect to the longitudinal axis of the fastener holes 110 a, 110 b. In some embodiments, the angles of thefasteners 114 in each of the fastener holes 110 a, 110 b are the same. In other embodiments, the angles offasteners 114 in each of the angled fastener holes 110 a, 110 b are different. - In some embodiments, the fastener holes 110 a, 110 b comprise a diameter larger than the diameter of a
head 118 of thefastener 114. Thefasteners 114 can freely slide through the angled fastener holes 110 a, 110 b and do not interface withinternal threads 112 of theholes fasteners 114 can be inserted into a specific position in a bone prior to installation of theimplant 102. After thefasteners 114 are positioned, theimplant 102 is placed on the bone such that thefasteners 114 are located within the fastener holes 110 a, 110 b. In other embodiments, thefasteners 114 may be installed through the fastener holes 110 a, 110 b after theimplant 102 is positioned on a bone. After positioning thefasteners 114 within the fastener holes 110 a, 110 b, afastener cap 116 can be inserted into a proximal end of each of the fastener holes 110 a, 110 b to secure thebody 104 to thefasteners 114. - In some embodiments, the
fastener cap 116 includes external threads configured to mate with theinternal threads 112 of the fastener holes 110 a, 110 b. Thefastener cap 116 includes acavity 122 at a distal end configured to interface with ahead 118 of thefastener 114. For example, in some embodiments, thefastener cap 116 acts as a set screw that maintains theimplant 102 and thefastener 114 in a locked relationship. In some embodiments, as shown inFIGS. 6-7 , thecavity 122 of thefastener cap 116 a includesinternal threads 130 sized and configured to couple tothreads 132 formed on thehead 118 a of a fastener. - In some embodiments, the
fastener cap 116 is sized and configured to be flush with thearticulation surface 106 when in a locked position, e.g., fully inserted into thefastener hole fastener cap 116 is sized and configured to sit below thearticulation surface 106 when in a locked position. An additional articulation cap (not shown) may be inserted over thefastener cap 116 to fill thefastener hole smooth articulation surface 106. In some embodiments, thefastener cap 116 extends beyond thearticulation surface 106 when in a locked position. Thefastener cap 116 may operate as a rotational stop for an implant placed in an articulating arrangement with thearticulation surface 106. For example, in some embodiments, thefastener cap 116 may operate as a rotational stop for a tibial implant in an articulating relationship with theimplant 102. -
FIG. 5 illustrates the a cross-sectional view of theimplant 102 taken along line 5-5 ofFIG. 4 . As shown inFIG. 5 , thefastener 114 has a diameter less than the internal diameter of theholes fastener 114 fits within theholes internal threads 112 of thehole fastener cap 116 can be inserted into a proximal end of thehole fastener cap 116 includes adistal cavity 122 sized and configured to receive afastener head 118 therein. Thefastener cap 116 locks theimplant 102 to thefastener 114 such that thefastener 114 and thefastener cap 116 maintain theimplant 102 in a fixed position with respect to a bone. In some embodiments, thefastener hole lip 124 formed at a distal end to prevent thefastener cap 116 from being inserted beyond a predetermined depth. Thedistal lip 124 may correspond to a fully locked position of thefastener cap 116 - In some embodiments the
fastener 114 can be positioned at a predetermined angle with respect to thebone contact surface 108 of thetalar dome 102. For example, in some embodiments, thefastener 114 is inserted into the bone at an angle with respect to a longitudinal axis of thefastener hole fastener 114 may be inserted at any suitable angle with respect to the longitudinal axis of thehole head 118 of thefastener 114 and/or thecavity 122 of thefastener cap 116 are sized and configured to allow thefastener cap 116 and thefastener 114 to interface at a variety of angles. For example, in some embodiments, thehead 118 of thefastener 114 includes a rounded, or ball-type, head. Thecavity 122 is a socket-type cavity configured to interface with thehead 118 of thefastener 114. The ball-and-socket coupling allows thefastener 114 to be placed at a variety of angles with respect to thetalar dome 102 and coupled to thetalar dome 102 by thefastener cap 116. Thefastener 114 may comprise any suitable fixation device, such as, for example, a screw, a peg, a coated peg, a slotted screw, a push-fit fastener, and/or any other suitable fastener. - Although the
implant 102 is shown having two angled fastener holes 110 a, 110 b located on a first side of thearticulation surface 106, it will be appreciated that theimplant 102 may comprise any suitable number of fastener holes 110 a, 110 b such as, for example, one, two, or fourfastener holes articulation surface 106, such as, for example, on the same side (as shown inFIG. 1 ), on opposite sides, and/or on multiple sides of the articulation surface. - In various embodiments, an implant system is disclosed. The implant system includes an implant having a body including a bone contact surface and an articulation surface located opposite the bone contact surface. The body defines at least one fastener hole extending from the articulation surface to the bone contact surface along a longitudinal axis. A fastener is sized and configured to be partially received within a distal end of the at least one fastener hole at a first angle with respect to the longitudinal axis of the fastener hole. A fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole, wherein the fastener cap couples the body to the fastener.
- In some embodiments, the at least one fastener hole comprises a plurality of internal threads. The fastener can have a first diameter less than a diameter of the internal threads of the fastener hole.
- In some embodiments, the fastener cap includes a plurality of external threads sized and configured to couple to the internal threads of the at least one fastener hole. The fastener cap can include a distal cavity sized and configured to receive a head of the fastener therein. In some embodiments, the distal cavity comprises a socket and the head of the fastener comprises a ball. In some embodiments, the distal cavity defines a plurality of internal threads and the head of the fastener defines a plurality of external threads sized and configured to interface with the plurality of internal threads of the distal cavity. The fastener can comprise a bone screw.
- In various embodiments, a total joint replacement system is disclosed. The total joint replacement system includes a tibial implant sized and configured to couple to a resected tibia and a talar implant sized and configured to couple to a resected talus. The talar implant includes a body having a bone contact surface and an articulation surface located opposite the bone contact surface. The body defines at least one fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis. The at least one fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole. A fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole. The fastener cap couples the body to the fastener.
- In some embodiments, the at least one fastener hole comprises a plurality of internal threads. The fastener can have a first diameter less than a diameter of the internal threads of the fastener hole. In some embodiments, the fastener cap includes a plurality of external threads sized and configured to couple to the internal threads of the at least one fastener hole. The fastener cap can include a distal cavity sized and can be configured to receive a head of the fastener therein. In some embodiments, the distal cavity comprises a socket and the head of the fastener comprises a ball. In some embodiments, the distal cavity defines a plurality of internal threads and the head of the fastener defines a plurality of external threads sized and configured to interface with the plurality of internal threads of the distal cavity. The fastener can comprise a bone screw.
- In various embodiments, a talar implant is disclosed. The talar implant comprises a body including a bone contact surface and an articulation surface located opposite the bone contact surface. The body defines at least one angled fastener hole extending therethrough from the articulation surface to the bone contact surface along a longitudinal axis. The at least one angled fastener hole is sized and configured to receive a fastener therein at a first angle with respect to the longitudinal axis of the fastener hole. A fastener cap is sized and configured to be received within a proximal end of the at least one fastener hole to couple the body to the fastener.
- In some embodiments, the at least one fastener hole comprises a plurality of internal threads. The fastener can have a first diameter less than a diameter of the internal threads of the fastener hole. The fastener cap can comprise a plurality of external threads sized and configured to couple to the internal threads of the at least one fastener hole.
- Although the subject matter has been described in terms of exemplary embodiments, it is not limited thereto. Rather, the appended claims should be construed broadly, to include other variants and embodiments, which may be made by those skilled in the art.
Claims (18)
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US10398562B2 (en) * | 2015-01-20 | 2019-09-03 | Exactech, Inc. | Talar implant for modifying joint kinematics |
US9877839B2 (en) * | 2015-08-25 | 2018-01-30 | Wright Medical Technology, Inc. | Modular talar fixation method and system |
FR3070593A1 (en) * | 2017-09-05 | 2019-03-08 | In2Bones | PROSTHESIS OF IMPROVED ANKLE |
CA3098384A1 (en) | 2018-04-24 | 2020-01-16 | Paragon 28, Inc. | Implants and methods of use and assembly |
CN109330748A (en) * | 2018-11-20 | 2019-02-15 | 中国人民解放军陆军军医大学第附属医院 | A kind of ankle prosthesis shin bone sidepiece part |
US10940012B2 (en) * | 2019-03-11 | 2021-03-09 | Wright Medical Technology, Inc. | Talar dome with angled holes |
CN110013364A (en) * | 2019-04-26 | 2019-07-16 | 中国人民解放军联勤保障部队第九二〇医院 | A kind of bionical resistance to affixed astragalus refill-unit in high temporal astragalus upper end |
CN114081687A (en) * | 2021-11-30 | 2022-02-25 | 北京爱康宜诚医疗器材有限公司 | Matched stack formula ankle joint talus side false body |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5879389A (en) * | 1995-04-07 | 1999-03-09 | Koshino; Tomihisa | Medical substituting element for hard tissues and artificial joint |
US20140128985A1 (en) * | 2012-11-07 | 2014-05-08 | Roy W. Sanders | Joint Arthroplasty Systems, Methods, and Components |
US11311386B2 (en) * | 2015-08-25 | 2022-04-26 | Wright Medical Technology, Inc. | Modular talar fixation method and system |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS577028A (en) | 1980-06-16 | 1982-01-14 | Mitsubishi Electric Corp | Heat resistant prepreg insulator |
US5520690A (en) * | 1995-04-13 | 1996-05-28 | Errico; Joseph P. | Anterior spinal polyaxial locking screw plate assembly |
US5888204A (en) * | 1996-04-15 | 1999-03-30 | Fastenetix, Llc | Acetabular cup having capped polyaxial locking screws |
WO2000066011A1 (en) | 1999-05-05 | 2000-11-09 | Michelson Gary K | Screws of cortical bone and method of manufacture thereof |
US20050065521A1 (en) | 2002-02-22 | 2005-03-24 | Steger Shon D. | Method and apparatus for bone fracture fixation |
AT502926B1 (en) | 2004-11-08 | 2011-04-15 | Alphamed Medizintechnik Fischer Gmbh | ANKLE PROSTHESIS ELEMENTS |
US7766969B2 (en) * | 2005-12-05 | 2010-08-03 | Zimmer, Inc. | Modular progressive implant for a joint articulation surface |
US20070142922A1 (en) * | 2005-12-21 | 2007-06-21 | Lewis Paul P P | Modular hip cup assembly, fastener assembly & fastener |
WO2007103826A2 (en) | 2006-03-02 | 2007-09-13 | Talus Medical, Inc. | Bone prosthesis |
US10398561B2 (en) | 2007-09-26 | 2019-09-03 | DePuy Synthes Products, Inc. | Talar implant system and method |
US20090210067A1 (en) * | 2008-02-20 | 2009-08-20 | Biomet Manufacturing Corp. | Acetabular Cup Fixation |
US20090248084A1 (en) | 2008-03-27 | 2009-10-01 | Beat Hintermann | Systems and methods for performing ankle arthrodesis in a human patient |
CN102048600B (en) | 2009-10-27 | 2013-06-12 | 上海交通大学医学院附属第九人民医院 | Total ankle plus total talus prosthesis |
US8303667B2 (en) | 2010-03-02 | 2012-11-06 | Alastair Younger | Fastening system for prostheses |
EP2363087B1 (en) | 2010-03-04 | 2014-05-07 | Alastair Younger | Fastening system for prostheses |
US8808335B2 (en) | 2010-03-08 | 2014-08-19 | Miami Device Solutions, Llc | Locking element for a polyaxial bone anchor, bone plate assembly and tool |
GB2500918A (en) | 2012-04-05 | 2013-10-09 | Biomet Uk Healthcare Ltd | A prosthetic ankle with sliding engaging components |
JP5960546B2 (en) | 2012-08-16 | 2016-08-02 | ミズホ株式会社 | Fracture treatment plate |
US9949839B2 (en) | 2013-03-13 | 2018-04-24 | Wright Medical Technology, Inc. | Revision implant augments, systems, and methods |
EP2832321A1 (en) | 2013-08-01 | 2015-02-04 | Universitätsspital Basel | Implant system for total ankle replacement |
CN103598936B (en) | 2013-10-21 | 2016-02-24 | 上海市第十人民医院 | A kind of combination type tumorous type ankle prosthesis |
US9901461B2 (en) * | 2015-04-21 | 2018-02-27 | Warsaw Orthopedic, Inc. | Spinal implant system and method of use |
-
2015
- 2015-08-25 US US14/835,208 patent/US9877839B2/en active Active
-
2016
- 2016-03-22 AU AU2016201814A patent/AU2016201814B2/en active Active
- 2016-03-22 CN CN201610166579.8A patent/CN106473841A/en active Pending
- 2016-03-22 CA CA2924440A patent/CA2924440A1/en not_active Abandoned
- 2016-03-23 EP EP16161907.7A patent/EP3135252A1/en not_active Withdrawn
- 2016-03-23 JP JP2016058219A patent/JP2017042587A/en active Pending
- 2016-03-23 BR BR102016006349A patent/BR102016006349A2/en not_active Application Discontinuation
-
2017
- 2017-12-20 US US15/848,934 patent/US10327906B2/en active Active
-
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- 2019-05-13 US US16/410,397 patent/US11311386B2/en active Active
-
2022
- 2022-04-04 US US17/657,834 patent/US20220218491A1/en not_active Abandoned
-
2023
- 2023-08-11 US US18/448,343 patent/US20230380981A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5879389A (en) * | 1995-04-07 | 1999-03-09 | Koshino; Tomihisa | Medical substituting element for hard tissues and artificial joint |
US20140128985A1 (en) * | 2012-11-07 | 2014-05-08 | Roy W. Sanders | Joint Arthroplasty Systems, Methods, and Components |
US11311386B2 (en) * | 2015-08-25 | 2022-04-26 | Wright Medical Technology, Inc. | Modular talar fixation method and system |
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CA2924440A1 (en) | 2017-02-25 |
CN106473841A (en) | 2017-03-08 |
US10327906B2 (en) | 2019-06-25 |
US11311386B2 (en) | 2022-04-26 |
BR102016006349A2 (en) | 2017-03-01 |
JP2017042587A (en) | 2017-03-02 |
US20170056189A1 (en) | 2017-03-02 |
AU2016201814A1 (en) | 2017-03-16 |
EP3135252A1 (en) | 2017-03-01 |
US20180110625A1 (en) | 2018-04-26 |
US20190262138A1 (en) | 2019-08-29 |
AU2016201814B2 (en) | 2017-06-29 |
US20230380981A1 (en) | 2023-11-30 |
US9877839B2 (en) | 2018-01-30 |
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