摘要:
A shoulder prosthesis includes a vault-filling component defining a bearing-facing surface and having a first coupling component, the vault-filling component including (i) a vault-filling first portion defining a first part of the bearing-facing surface, and (ii) a projecting second portion projecting from the vault-filling first portion so as to define a second part of the bearing-facing surface. The vault-filling first portion and the projecting second portion define a bone space therebetween. The shoulder prosthesis further includes a bearing component defining a bearing surface and having a second coupling component configured to cooperate with the first coupling component to couple the bearing component to the vault-filling component. At least one bone attachment member positioned in the bone space. The projecting second portion of the vault-filling component further defines a scapula-facing surface. The vault-filling first portion of the vault-filling component further defines (i) a first lateral surface extending from the scapula-facing surface, and (ii) a second lateral surface extending from the first part of the bearing-facing surface. The first lateral surface and the second lateral surface taper towards each other in a direction extending away from the bearing-facing surface.
摘要:
A method for providing joint arthroplasty includes providing a gauge for making a measurement of the contour of a long bone, making a measurement of the contour of a long bone with the gauge, providing a plurality of joint prostheses, selecting one of the plurality of joint prostheses based upon the measurement of the contour, resecting a long bone, and implanting the selected one prosthesis onto the long bone. A kit is also provided for selecting one of a plurality of joint implants for use in joint arthroplasty on a bone. The kit includes a first gauge and a second gauge.
摘要:
A kit (100) for use in performing joint arthroplasty on a head of a long bone (4) is provided. The kit (100) includes a first trial (102) including a first trial articulating surface (106) and an opposed first trial mounting surface (108) having a first trial location feature (110). The kit (100) also includes a second trial (104) including a second trial articulating surface (112) and an opposed second trial mounting surface (114) having a second trial location feature (116). The first trial articulating surface (106) and the second trial articulating surface (112) have different geometries and the first trial location feature (110) and the second trial location feature (116) have substantially identical geometries whereby different trials may be used with a common location feature.
摘要:
An instrument(10) for use in performing arthroplasty is provided. The instrument(10) includes a first portion(11) adapted to prepare a convex surface(64) on the head(5) of the long bone(4). The instrument (10) also includes a second portion (13) adapted to prepare an elongated cavity (62) or a third portion (14) adapted to prepare a central support surface (56) on the head (5) of the long bone (4), or both second portion (13) and the third portion (14). The third portion (14) and the second portion (13) are operably associated with the first portion(11).
摘要:
A prosthesis assembly configured for use with a scapula in one embodiment includes a spherical humeral component, an elongated glenoid bearing including a first bearing surface with (i) a first spherical end portion with a first radius of curvature, (ii) a second spherical end portion with a second radius of curvature, and (iii) a central portion located between the first spherical end portion and the second spherical end portion, and a first coupling portion extending from a second bearing surface opposite the bearing surface, and a base configured to rotatably support the elongated glenoid bearing, wherein the first radius of curvature is substantially equal to the second radius of curvature and the central portion does not have a radius of curvature that is substantially equal to the second radius of curvature.
摘要:
A shoulder prosthesis includes a metaglene component that has (i) a base with a bearing-facing side, a scapula-facing side, and an external coupling surface interposed therebetween, (ii) an augment attached to the scapula-facing side of the base, and (iii) a post attached to at least one of the base and the augment. The metaglene component has defined therein a passage extending through at least both the base and the post. The metaglene component further having a plurality of fastener holes defined in the base. The shoulder prosthesis further includes a bearing component defining a cavity and including a bearing surface, the cavity defining an internal coupling surface, and the bearing-facing side of the metaglene component being located within the cavity so that the external coupling surface of the base is positioned in contact with the internal coupling surface of the bearing component to form a friction fit connection between the bearing component and the metaglene component. The shoulder prosthesis also includes a plurality of fasteners configured to respectively extend through the plurality of fastener holes defined in the base.
摘要:
A glenoid component apparatus for shoulder arthroplasty includes a bearing portion and a stem portion connected to the bearing portion. The stem portion is modeled from a normalized glenoid vault morphology. A method for making a glenoid component for shoulder arthroplasty includes obtaining a model of a normalized glenoid vault morphology and producing a stem portion of the glenoid component based on the model.
摘要:
A glenoid component for securement to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus includes a body having a first surface configured to contact the glenoid surface of the scapula and a second surface configured to receive the head portion of the humerus. The glenoid component also includes an interruption such as a buttress extending from the body. The interruption is configured to be received in a like-configured notch formed in the glenoid surface of the scapula. The interruption helps prevent movement of the glenoid component relative to the glenoid surface of the scapula after implant. The body also may include anchoring extending from the body for penetrating the glenoid surface of the scapula so as to help secure the body to the glenoid surface of the scapula. The glenoid component is used in one application to help correct bone defects and in another application for wear. A method of securing the glenoid component to a glenoid surface of a scapula so as to provide a bearing surface for a head portion of a humerus is also disclosed.
摘要:
A shoulder prosthesis includes a vault-filling component defining a bearing-facing surface and having a first coupling component, the vault-filling component including (i) a vault-filling first portion defining a first part of the bearing-facing surface, and (ii) a projecting second portion projecting from the vault-filling first portion so as to define a second part of the bearing-facing surface. The vault-filling first portion and the projecting second portion define a bone space therebetween. The shoulder prosthesis further includes a bearing component defining a bearing surface and having a second coupling component configured to cooperate with the first coupling component to couple the bearing component to the vault-filling component. At least one bone attachment member positioned in the bone space. The projecting second portion of the vault-filling component further defines a scapula-facing surface.
摘要:
A glenoid component apparatus for shoulder arthroplasty includes a bearing portion and a stem portion connected to the bearing portion. The stem portion is modeled from a normalized glenoid vault morphology. A method for making a glenoid component for shoulder arthroplasty includes obtaining a model of a normalized glenoid vault morphology and producing a stem portion of the glenoid component based on the model.