Howmedica Osteonics Patente

Disclosed herein is a biocompatible composite material and a method of preparing a powder containing same. The biocompatible material can include a matrix and a second-phase dispersion. The matrix can include primary particles forming a titanium alloy. The second-phase dispersion can include secondary particles each encompassed by one of the primary particles of the matrix. The method can include preparing an ingot having the biocompatible material and atomizing the ingot to produce a composite material powder.

A glenoid baseplate is provided that has a transverse body and an elongate body. The transverse body has a first side configured to engage scapula bone of a patient, a second side configured to face away from the first side, and a plurality of anchor apertures. The anchor apertures are formed between the first side and the second side. The transverse body also can have an arcuate or circular periphery that has an anterior portion configured to be oriented toward an anterior side of a scapula and a posterior portion that is configured to be oriented toward a posterior side of the scapula. The elongate body is disposed along a longitudinal axis between an end coupled with the first side of the transverse body. The longitudinal axis of the elongate body is off-set from the center of the circular periphery.

A method of designing a tibial bearing insert includes: identifying a radial arc centerline axis of a tibial bearing insert, the radial arc centerline axis passing through an apex of a lateral radial arc of the tibial bearing insert and an apex of a medial radial arc of the tibial bearing insert, both in a first transverse plane, the lateral and medial radial arcs representing lines of minimum thickness of the tibial bearing insert between an anterior side and a posterior side of the tibial bearing insert on an initial articular surface of the tibial bearing insert; aligning a center axis of a femoral flexion radius of a femoral component with the radial arc centerline axis such that the center axis and the radial arc centerline axis are coincident with a first coronal plane; while keeping the center axis in the first coronal plane, aligning the femoral component with the tibial bearing insert by positioning the femoral component such that an inferior most point of a circle representative of the femoral flexion radius and centered on the center axis defines a predetermined minimum thickness of the tibial bearing insert; and subsequent to aligning the center axis and aligning the femoral component with the tibial bearing insert, modifying a curvature of the initial articular surface of the tibial bearing insert between the anterior side and the posterior side to a modified articular surface that corresponds to a portion of the circle.

A modular implant (100) is provided and includes a first component (130) configured for receipt within a bone, the first component having a frustoconical shape and a lumen therethrough. Modular implant includes a second component (120) removably engaged to the first component such that a portion of the second component is received within the lumen of the first component. Further, modular implant includes a third component (110) removably engaged to the second component such that an inner surface (116) of the third component is engaged to an outer surface (123) of the second component, an outer surface (112) of the third component being configured for engagement with a resected portion of the bone.

A height measuring tool for measuring a distance between a proximal humeral resection and a center of a glenoid, the tool comprising: an axially extending housing having a distal end with a mating feature configured to mate with a proximal end of a trial stem of a trial humeral prosthesis, the housing including indicia formed thereon corresponding to distances along an axial extent of the housing; a pointer; and a coupling element received over the housing and coupling the pointer to the housing, the coupling element being configured to slide along the axial extent of the housing and to selectively maintain an axial position relative to the axial extent of the housing.

An implant system including a bone plate and a flexible implant attachment. The bone plate having a first arm and a second arm extending from a body of the bone plate. The flexible implant having a plurality of links chained together by a plurality of connectors. Each link of the plurality of links includes a core and a set of connectors. The set of connectors of the plurality of connectors extending laterally away from the core. Each connector of the set of connectors defines an opening positioned along a plane that intersects the longitudinal axis of the core at an oblique angle. Each connector of the set of connectors is linked to another connector of the plurality of connectors extending from another link of the plurality of links.

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This disclosure describes a surgical implant device (100) comprising a body (102) that includes a porous material (106) forming at least a portion of the body, wherein the porous material is configured to promote bone ingrowth and is porous to a fluid. In addition, one or more fluid channels (120) are formed in the body. The one or more fluid channels are arranged to define a fluidic path that exits into the porous material.

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A system for bone resurfacing or total hip replacement, including an acetabular component (100, 400) having a first cavity (106), a dual mobility liner (110, 410) having a second cavity (116), the outer surface (112) of the liner being configured to be received within the first cavity (106) and articulable therein relative to the inner surface (104) of the acetabular component (100, 400) and a femoral component (120, 220, 420) having a head and a stem (128) extending from the head and being configured to be received within a femur, an outer surface of the head (122, 222, 422) being configured to be received within the second cavity (116). The dual mobility liner (110, 410) includes a plurality of openings (111) that extend from an outer surface (112) of the liner to an inner surface (114) of the liner, such that the plurality of openings (111) facilitate fluid communication between opposing sides of the liner (110, 410).

A self-broaching, neck-preserving hip stem includes a set of rasp teeth on a distal-lateral portion of the stem to allow the stem to be impacted into a femur without the use of surgical broaches. The rasp teeth are disposed on a relief surface. The stem includes a length, radius of curvature, and a dual-taper in the anterior-posterior and distal-lateral directions which allow the neck to self-broach and seat itself proximal to the conventional resection level to preserve greater bone stock in the femur.

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