Abstract: A modular bone model can include a bone component and an implant component that can be positioned on the bone component. The implant component can be shaped and sized to correspond to a head component of a medical implant to simulate an articulating surface of the head component. Similarly, the bone component can be shaped to simulate a natural bone to which the medical implant can be mounted. Alternatively, the head component of the medical implant can be mounted directly to the bone component to simulate the mounting on the natural bone.

Abstract: A quick-connect drill bit assembly comprising a drive shank and a drill bit releasably attached to the drive shank, the drill hit being configured to bore a first hole in a bone through a drill guide. A portion of the drill bit is configured to remain within the first hole after the drive shank is detached therefrom, the drill bit being configured to prevent the drill guide from rotating with respect to the bone as a second hole is bored into the bone.

Abstract: A quick-connect drill bit assembly comprising a drive shank and a drill bit releasably attached to the drive shank, the drill hit being configured to bore a first hole in a bone through a drill guide. A portion of the drill bit is configured to remain within the first hole after the drive shank is detached therefrom, the drill bit being configured to prevent the drill guide from rotating with respect to the bone as a second hole is bored into the bone.

Abstract: A method is disclosed for repairing a defect in an anatomical feature, the defect having a surface that defines a volume. The method includes receiving imaging data obtained using a medical imaging technique. The imaging data represents the anatomical feature. In one example, the method further includes creating a three-dimensional (3D) model of a mold for an implant based on the imaging data. The mold includes a cavity that replicates the volume of the defect. In another example, the method further includes creating a 3D model of an implant based on the imaging data. The implant is configured to fill the volume of the defect. In various implementations, the mold, the implant, and/or a replica of the implant are formed based on the 3D model of the mold or the 3D model of the implant. Guides and implants corresponding to the method are also disclosed.

Abstract: A method is disclosed for repairing a defect in an anatomical feature, the defect having a surface that defines a volume. The method includes receiving imaging data obtained using a medical imaging technique. The imaging data represents the anatomical feature. In one example, the method further includes creating a three-dimensional (3D) model of a mold for an implant based on the imaging data. The mold includes a cavity that replicates the volume of the defect. In another example, the method further includes creating a 3D model of an implant based on the imaging data. The implant is configured to fill the volume of the defect. In various implementations, the mold, the implant, and/or a replica of the implant are formed based on the 3D model of the mold or the 3D model of the implant. Guides and implants corresponding to the method are also disclosed.

Abstract: A bone reamer includes a first member having a first hub and a second member having a second hub. The first hub can extend along a first axis and have a pair of elongated cutting arms that are fixed to the first hub. The elongated cutting arms can extend along a second axis that is generally perpendicular relative to the first axis. The first hub can define a track thereon. The second hub can extend along a third axis. The second member can have a second pair of elongated cutting arms that are fixed to the second hub and extend along a fourth axis that is generally perpendicular to the third axis. The second member can have a track follower extending thereon and that is configured to slidably advance along the track causing the first and second members to move between a collapsed position and an expanded position.

Abstract: A humeral cut guide system for a humeral head comprises: a bone-engagement member including a first patient-specific bone-engagement surface that is complementary and made to substantially mate and nest in only one position on a specific patient's humeral head; a registration member connected to the bone-engagement member including a second patient-specific bone engagement surface that is sized and made to substantially mate and nest in only one position with the specific patient's bicipital groove; a first protrusion extending from the registration member and having a first surgeon-engaging surface for manipulation by a surgeon; and a cut guide plate connected to and extending away from the registration member such that, upon the bone-engagement member mating and nesting with the specific patient's humeral head, the cut guide plate is spaced apart from the humeral head, wherein the cut guide plate defines an elongate slot.

Abstract: A humeral cut guide member for resectioning or resurfacing a humeral head, including a bone-engagement member including a first patient-specific bone-engagement surface that is complementary and made to substantially mate and nest in only one position on a specific patient's humeral head; a registration member connected to the bone-engagement member including a second patient-specific bone engagement surface that is sized and made to substantially mate and nest in only one position with the specific patient's bicipital groove; and a cut guide plate connected to the bone-engagement member and defining an elongated slot.

Abstract: A method for assembling a prosthesis system for replacement of a head portion of a proximal radius is provided and may include coupling an articulation component to a head component via a first locking portion of the articulation component and a second locking portion of the head component. The method may additionally include inserting a connection portion of the articulation component into a bore of the head component, aligning a first locking channel of the articulation component with a second locking channel of the head component, and coupling a stem to the articulation component and the head component by inserting a third locking portion of the stem into the first locking channel and the second locking channel.

Abstract: A glenoid guide has an upper surface and a lower surface, wherein the lower surface is a patient-specific surface configured as a negative surface of a glenoid face based on a three-dimensional image of a shoulder joint of a patient reconstructed preoperatively from image scans of the shoulder joint of the patient. The glenoid guide includes an anatomic tubular drill guide extending from the upper surface along an anatomic alignment axis configured preoperatively with a patient-specific orientation and insertion location for guiding a glenoid implant into the glenoid face for anatomic shoulder arthroplasty. The glenoid guide includes a reverse tubular drill guide extending from the upper surface along a reverse alignment axis configured preoperatively with a patient-specific orientation and insertion location for guiding a glenoid baseplate into the glenoid face for reverse shoulder arthroplasty.

Abstract: A humeral cut guide system for resectioning or resurfacing a humeral head. The humeral cut guide system includes a primary cut guide member configured to be removably coupled to the humeral head. The primary cut guide member includes a patient-specific bone-engaging surface, a primary elongate slot that defines a primary cutting plane, and a pair of cylindrical apertures configured to receive a pair of guide pins. A secondary cut guide member includes a pair of through-holes configured to mate with the pair of guide pins, and the secondary cut guide member includes a secondary elongate slot that defines a secondary cutting plane.

Abstract: A bone reamer includes a first member having a first hub and a second member having a second hub. The first hub can extend along a first axis and have a pair of elongated cutting arms that are fixed to the first hub. The elongated cutting arms can extend along a second axis that is generally perpendicular relative to the first axis. The first hub can define a track thereon. The second hub can extend along a third axis. The second member can have a second pair of elongated cutting arms that are fixed to the second hub and extend along a fourth axis that is generally perpendicular to the third axis. The second member can have a track follower extending thereon and that is configured to slideably advance along the track causing the first and second members to move between a collapsed position and an expanded position.

Abstract: A quick-connect drill bit assembly comprising a drive shank and a drill bit releasably attached to the drive shank, the drill bit being configured to bore a first hole in a bone through a drill guide. A portion of the drill bit is configured to remain within the first hole after the drive shank is detached therefrom, the drill bit being configured to prevent the drill guide from rotating with respect to the bone as a second hole is bored into the bone.

Abstract: The present disclosure describes a glenoid implant including a body and a fixation member. The body has an articular surface and a scapula-engaging surface opposite from the articular surface. At least a portion of the scapula-engaging surface is configured to mirror and conform to a surface of a scapula of a specific patient based on a three-dimensional (3D) model of the scapula. The fixation member extends from the scapula-engaging surface for fixing the glenoid implant to the scapula.

Abstract: A method of determining an optimal position of a glenoid implant. The method includes identifying a center point of a patient's glenoid fossa based on an image of the patient's glenoid fossa; determining the optimal position of the glenoid implant based on the location of the center point relative to a medial point of the patient's scapula; and selecting orientation of an alignment pin based on the determined optimal glenoid implant position such that the glenoid fossa will be prepared to receive the glenoid implant at the optimal position when the glenoid fossa is prepared with a cutting device or guide coupled to the alignment pin.

Abstract: A glenoid guide has an upper surface and a lower surface, wherein the lower surface is a patient-specific surface configured as a negative surface of a glenoid face based on a three-dimensional image of a shoulder joint of a patient reconstructed preoperatively from image scans of the shoulder joint of the patient. The glenoid guide includes an anatomic tubular drill guide extending from the upper surface along an anatomic alignment axis configured preoperatively with a patient-specific orientation and insertion location for guiding a glenoid implant into the glenoid face for anatomic shoulder arthroplasty. The glenoid guide includes a reverse tubular drill guide extending from the upper surface along a reverse alignment axis configured preoperatively with a patient-specific orientation and insertion location for guiding a glenoid baseplate into the glenoid face for reverse shoulder arthroplasty.

Abstract: The present teachings provide a modular glenoid prosthesis for replacing a portion of the anatomy. The prosthesis can comprise a platform having a coupling portion, a base and a central bore that extends from the coupling portion through the base. The central bore can define a tapered region, and the coupling portion can include a plurality of bores. The prosthesis can include a glenoid component having a plurality of pegs. Each of the plurality of pegs can be coupled to a respective one of the plurality of bores. The prosthesis can include a glenosphere including a tapered stem couplable to the tapered region. The glenoid component and the glenosphere are selectively couplable to the platform for replacing the portion of the anatomy.

Abstract: A method of determining an optimal position of a glenoid implant. The method includes identifying a center point of a patient's glenoid fossa based on an image of the patient's glenoid fossa; determining the optimal position of the glenoid implant based on the location of the center point relative to a medial point of the patient's scapula; and selecting orientation of an alignment pin based on the determined optimal glenoid implant position such that the glenoid fossa will be prepared to receive the glenoid implant at the optimal position when the glenoid fossa is prepared with a cutting device or guide coupled to the alignment pin.

Abstract: A system and method for aligning a guiding pin relative to a glenoid including a guiding pin insertion guide for orienting the guiding pin relative to the anatomic structure and an axis alignment device. The guiding pin insertion guide includes a base plate and a movable pin orientation device coupled to and extending from the base plate. The axis alignment device has a plurality of through holes that each define a different alignment axis. The guiding pin mates with one of the through holes to align the guiding pin at a patient-specific alignment axis, the guiding pin is then received within the guiding pin insertion guide when mated with the one of the through holes to align the guiding pin insertion guide along the patient-specific alignment axis relative to the base plate, and the guiding pin insertion guide is fixed to the base plate along the patient-specific alignment axis.

Abstract: A glenoid implant is provided and may include a body portion and a stem portion. The stem portion may extend from the body portion along a longitudinal axis. The body portion may include an articular side and a bone-engaging side opposite the articular side. At least a portion of the bone-engaging side may be disposed at a non-parallel angle relative to at least a peripheral edge of the articulation side.