Abstract: The invention relates to a hip joint prosthesis comprising a shaft-like section that can be inserted into a femur, and a proximally arranged end cap assembly which closes a hollow space of the hip joint prosthesis. According to the invention the end cap assembly carries a coil assembly that is connected to a first electrode with a first pole and to a second electrode with a second pole. The first and the second electrodes enclose surfaces of the hip joint prosthesis, and in a state in which the end cap assembly closes the hollow space of the hip joint prosthesis, the coil assembly is predominantly arranged in the hollow space.

Abstract: The present disclosure provides a femoral prosthesis for use during a revision procedure. The femoral prosthesis includes a body, a neck, a stem, and a sleeve. The sleeve facilitates reattachment of an osteotomized proximal femur, specifically the greater trochanter, following a revision femoral prosthesis surgery involving an extended trochanteric osteotomy. Additionally, the sleeve promotes ingrowth of the osteotomized proximal femur with the sleeve.

Abstract: A modular hip joint implant and associated method. The modular hip implant includes a femoral stem having a proximal surface defining a dovetail groove having first and second female wings, and a neck component having a distal surface defining a semi-dovetail projection engaging the dovetail groove. The projection includes a single male wing mating with the first femoral wing.

Abstract: The present invention is directed to a modular shoulder prosthesis measuring device having an adjustable radial offset provided by relative rotation of an adapter interdisposed between the stem and the head. Specifically, the interface configuration between the stem and the adapter, as well as between the adapter and the head are designed such that relative positioning of these components provides a continuous adjustment in the radial offset. Indicia are provided to precisely determine the magnitude and direction of the adjustment being made.

Abstract: A kit for use in performing revision surgery on a cavity in a canal of extending from a resected plane a long bone is provided. The kit includes a canal component fitted to the cavity. The canal component includes a canal portion having first and second ends. The canal component further includes a sleeve portion having an external periphery and an internal periphery defining an internal cavity. The kit also includes a first joint component having a body portion and a connection portion. The connection portion is fitted into the sleeve portion. A connection portion of a second joint component also may be fitted into the sleeve portion so that the external periphery of the connection portion of the first joint component is spaced inwardly from the external periphery of the sleeve portion of the canal component when the first joint component is fixedly connected to the canal.

Abstract: a minimal invasive hip arthroplasty device is provided. The system comprises a long nail portion, a lag screw portion, distal locking screws, and a resurfacing head. The long nail portion is inserted into a shaft body of a femur from a top portion of the femur and disposed in the femur. The lag screw portion engages and anchors at the long nail portion through a lag screw hole, and the lag screw portion is inserted into a neck of the femur. The distal locking screws queue through the shaft body of the femur perpendicularly and fix the long nail portion to the femur further. The resurfacing head comprises a cup portion configured to cover a head of the femur and a fixing pin portion configured to be inserted into the head and the neck of the femur and engaging the lag screw portion through a resurfacing head hole.

Abstract: A modular femoral hip joint prosthesis can include a proximal femoral body having a distal end and a proximal end. The proximal end can be adapted to mate with a femoral head. A femoral stem can have a proximal section and a distal section. The femoral stem can be adapted to matingly connect with the distal end of the proximal femoral body. The proximal section can have a porous metal coating that is adapted to facilitate bony ingrowth. The distal section can have at least one spline formed along an outer surface.

Abstract: Methods and apparatus of the present invention provide for orthopedic total replacement of the hip while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation following the procedure. In an exemplary embodiment, the acetabulum is prepared and fitted with a prosthetic acetabular cup 702 and a prosthetic femoral head 1102 is fitted into the prosthetic acetabular cup 702. An intramedullary rod 1502 is inserted longitudinally into the femur. A prosthetic femoral neck 3102 is then inserted from a point along the side of the patient's body and into the side of the femur and through a pre-existing lateral bore in the intramedullary rod 1502 and through the remainder of the femur to join the prosthetic femoral head 1102. The methods and apparatus include structures and techniques for fixing the prosthetic femoral neck 3102 in relation to the intramedullary rod 1502.

Abstract: A pre-assembled orthopaedic implant adapted for improved gas sterilization. The implant includes a first component adapted for assembly with a second component such that a mating surface of the first component is in close proximity with a mating surface of the second component. At least one gas conduit associated with the mating surface of the first component facilitates a sterilizing gas to penetrate into and dissipate from the interface defined by the mating surfaces.

Abstract: A prosthesis for partial replacement of a long bone in humans or animals, the prosthesis including: a proximal or distal end component forming one component of a prosthetic joint; a shaft on or assembled with the distal or proximal end component in use; a stem for engagement in a resected bone; and an initially separate collar assembled to the shaft or an extension thereof in use, the collar being dimensioned to abut the resected end face of the bone into which the prosthesis is to be fitted, wherein the end face of the collar facing the resected face of the bone is sized and shaped to correspond to the resected end face of the bone.

Abstract: The present invention relates to a navigation device (4) for visually selecting and positioning components of a multi-part joint endoprosthesis (1) for ball joints of a human or animal body, in particular a hip joint endoprosthesis, with a shaft (2) that can be inserted into a marrow cavity of a bone, an exchangeable connection neck (3) and a joint head located at the free end of the connection neck (3), forming a ball joint with a joint socket (5) that can be connected to a bone, wherein there is provided at least one navigation ball (4) with an outer diameter corresponding to the joint socket (5) and with a recess (8) for attachment at the free end of the connection neck (3) as well as with at least one partially peripheral marking (6) provided on its surface, as well as two or more connection necks (3) of different geometries, wherein each connection neck (3) may be connected with the shaft (2) at different positions and at the same or at different CCD angles and at the same or different antetorsion angles

Abstract: A modular femoral hip implant trialing system. The system generally includes a proximal body, a fastener, and a fastener retention member. The proximal body includes a proximal bore, a tapered distal bore, and a passageway connecting the proximal bore to the distal bore. The proximal bore, the distal bore, and the passageway are aligned along a first axis. The fastener includes a head in the proximal bore and a stem in the distal bore, the fastener is aligned along the first axis. The fastener retention member is positioned in the proximal bore and is operable to retain at least a portion of the fastener within the proximal bore.

Abstract: An implant for a hip can include a lateral augment adapted to be coupled to a lateral side of a femoral body implant. The lateral augment can include a body portion having a first surface, a second surface opposite the first surface, and a protrusion extending from the second surface. The protrusion can have a shape adapted to mate with a complimentary shaped recess formed in the lateral side of the femoral body implant. An aperture can be positioned in the body portion and extend through the protrusion. A fastener can be received through the aperture and adapted to be threadably secured to the lateral bore. The fastener can be configured to have a length sufficient to pass through a portion of a greater trochanter for securing the portion of the greater trochanter and the lateral augment to the femoral body implant.

Abstract: A proximal femoral prosthesis minimizes impingement, thereby affording an enhanced range of motion as compared to existing devices. The central portion of the neck of a prosthesis according to the invention is oriented distally relative to a straight line drawn between the ball portion and a point of interconnection to the exposed portion of the stem. Such a configuration reduces impingement in flexion/internal rotation and extension/external rotation, assuming an appropriately placed acetabular component. In the preferred embodiment, the neck is curved between the head and the neck. In alternative embodiments, the neck may be provided in straight and/or modular segments. The invention is compatible with neck-shaft angles, offsets, head sizes, and other dimensions commonly designated with respect to available implants.

Abstract: The system to implant a prosthetic device in a long bone such as a femur or a humerus includes a stem implant having a recess. The system of present invention also includes a broach to prepare the long bone that may receive the stem implant. The broach also has a recess that is similar to the recess in the stem implant. An adapter of a generally rectangular shape similar to the recess fits snugly in the recess in the stem implant. A trial neck that fits snugly in the recess formed in the adapter is also provided. A trial head may be assembled on the trial neck. A neck similar to the trial neck can be inserted in place of trial neck. A head may be assembled on the proximal end of the neck. A system for implantation of a prosthetic device in a long bone may be made available as a kit that includes at least two stems having the adapter inserted in each of the stem, at least two trial necks, at least two trial heads, at least two necks and at least two heads.

Abstract: A case for modular neck components for hip implants. The case may include indicators based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The case allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. A method described herein may include preoperative planning in which a template including a grid coordinate system is used, which advantageously provides an intuitive system for the surgeon both preoperatively and during surgery.

Abstract: A system and method for trialing a modular hip replacement system permits evaluation and replication of the anatomic anteversion rotational angle of the femur. In one embodiment, a femoral hip implant kit includes at least one distal implant and a plurality of femoral heads, each of the plurality of femoral heads having a diameter different from the diameter of the other of the plurality of femoral heads. The kit includes a proximal trial housing with a bore within the housing, the bore configured to receive a portion of the distal implant, a collet located within the bore, the collet including an outer wall portion extending between a top surface portion and a bottom surface portion, a collapsing member for engaging the portion of the distal implant and for forcing the top surface portion of the collet toward the bottom surface portion of the collet along a first axis.

Abstract: The invention relates to modular hip joint prosthesis and an assembling method thereof. The modular hip joint prosthesis includes a stem component, a proximal body module and lock component. The proximal body module assembles with the stem component and includes a first curved surface component and a second curved surface, wherein the radius of curvature of the first curved surface component is different from the radius of curvature of the second curved surface component. The lock component is used to encase the first curved surface component and the second curved surface for locking up both components.

Abstract: An apparatus for orienting a prosthetic femoral head relative to an acetabulum comprises a femoral stem and a femoral head member. The femoral stem is configured to be received within the intramedullary canal of a femur. The femoral head member is configured to couple to the femoral stem and further configured to be received in the acetabulum. The femoral head member further comprises an indicia configured to orient a relative position of the prosthetic femoral head to the acetabulum such that the indicia signifies proper relative position of the prosthetic femoral head in the acetabulum.

Abstract: A prosthesis includes a trunnion having a first end defining a uniform cross-section and a second end adapted to be fixed to a prosthesis stem. A ceramic head has a first bearing surface on which a second prosthesis fixed to a second bone can articulate. The ceramic head defines a recess. The first end of the trunnion is fixedly received within the recess. The second end of the trunnion is releasably connectable to the prosthesis stem by a taper connection.

Abstract: An instrument for use in a joint replacement procedure includes a trial head that corresponds to the head of an orthopaedic joint component having an upper surface defined by a curved surface and a bore formed in a lower surface and a trial connector for connecting the trial head to a stem part of the orthopaedic joint component which is intended for location in the intramedullary cavity of a bone. The trial connector can be fitted into the bore in the trial head at a variable angular orientation.

Abstract: A trial (100) for use in performing joint arthroplasty is provided. The trial (100) fits to a cavity (103) in the canal (105) of a long bone (107) and assists in the performing of a trial reduction in performing joint arthroplasty. The trial (100) includes a stem portion (102) and a neck portion (104) fixedly connected to the stem portion (102) in a plurality of selectable positions with respect to the stem portion (102).

Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.

Abstract: A revision hip implant comprises a stem, sleeve, and neck. A proximal IM portion and a distal IM portion of the stem are generally aligned along a long axis of the stem. A body portion of the stem is proximally oriented and has a surface extending generally radially out from the long axis of the stem. The sleeve is configured to be received over the distal intramedullary canal portion of the stem and further has an inner surface configured to mate with the distally extending taper surface of the proximal intramedullary canal portion. The neck is configured to be received in the body portion of the stem. The body portion of the stem has a neck receiving surface configured to mate with a neck taper portion of the neck. The neck taper portion is oriented at an angle relative to the long axis.

Abstract: The present invention relates to a device for the replacement of a permanent articular prosthesis at an implant site, comprising a stem (1) suited to being fixed to a support bone, connected to a head (2) suited to being arranged in an articular area, comprising at least two different cavities (3) with leak tight walls formed at the head (2) made of a thermoplastic material, said cavities (3) emerging at the surface of the device in contact with the implant site, and means for separating (4) cavities (3) from the implant site, enabling the diffusion of a liquid on either side of said separating means.

Abstract: A modular implant system includes a set of anatomically-designed diaphyseal fitting and filling modular implant components and adapters for connection to another implant component such as a modular articular component, a segmental component or an intercalary component. The other end of each diaphyseal component is a tapered porous surface. The tapered porous surface is received with a tapered bore in the bone diaphysis that is prepared to match the size and shape of the tapered porous surface. The diaphyseal implant is easy to insert and remove, does not bind before fully seating, and is designed to prevent stress shielding. The diaphyseal sleeve eliminates the long lever arm created when fixation occurs only at the tip of the stem, and should therefore eliminate related stem loosening.

Abstract: The specified implant for use as a femur component in a hip joint prosthesis comprises a shaft, being intended for the implantation in a cavity of a proximal femur, a head section, for fastening a femoral head prosthesis and a femoral neck section, being arranged between the shaft and the head section. The femoral neck section comprises a femoral head axis and a contour in a cross-section perpendicular to the femoral neck axis, tapering in a V-shape or wedge-shape to medial and at least an anterior straight section and at least a posterior straight section, wherein the straight sections define the tapering.

Abstract: A modular prosthesis that may be implanted in a highly minimally invasive manner. Specifically, the modular prosthesis may include a neck and an anchor. Both the neck and the anchor are configured to be inserted and connected together through a lateral aspect of a long bone adjacent to the proximal end of the long bone. In one exemplary embodiment, the neck includes a body having a head end, configured for attachment to another prosthetic component, such as a corresponding articulating component, and an aperture extending therethrough. The anchor may be sized for receipt within the aperture formed in the neck. Additionally, the anchor may be configured such that the anchor engages the walls forming the aperture in the neck to secure the components together.

Abstract: A method of implanting a modular hip stem implant having a stem portion and a body portion into a medullary canal of a patient's femur utilizing a two-incision technique. The stem portion is inserted through an anterior incision and the body portion is inserted through a posterior incision where they are interconnected in vivo. The modular hip stem implant is then driven into the medullary canal with force applied through either of the two incisions.

Abstract: A proximal femoral ball assembly having a variable offset that is selectively adjustable to conform to various anatomical conditions encountered during a femoral surgical procedure. The femoral ball assembly generally includes a head, a neck, and an adjustment mechanism. The head has a smooth spherical outer surface that is adapted to engage an acetabular component or native acetabulum. The neck extends outward from the head and removeably connects to the head using a threaded attachment.

Abstract: A prosthetic trial for a joint prosthesis includes a stem having a proximal section and a distal section for implantation in a bone. A body includes a channel receiving at least the proximal section of the stem. A locking mechanism is at least partially disposed within the body. The locking mechanism is biased into a locking position in which the mechanism locks the stem within the first channel of the body. The locking mechanism is accessible outside said body to be pulled into a releasing position to unlock the stem from the body.

Abstract: There is provided a system of modular orthopaedic devices. The system comprises one or more hip implants or trials, each hip implant or trial having a femoral stem and one of at least two neck segments having different geometries. Each neck segment comprises a proximal end configured to receive a femoral head portion and a distal end configured to be operably received by a proximal portion of the femoral stem. Each proximal end comprises a central portion generally representative of a femoral head center. When each of the at least two neck segments are joined with the femoral stem, the central portion is displaced a predetermined distance in a single direction relative to the femoral stem. The neck segments provided, therefore, advantageously allow a user to independently adjust any one of a height, an offset, or a version angle of an orthopaedic device for best performance and fit.

Abstract: Apparatus and methods of protecting modular implant connection portions are provided. A guard includes an outer sidewall and an inner sidewall defining a cavity that covers a modular implant connection portion. The modular implant connection covered with the guard can facilitate test-fitting of other modular implant components and allows reaming of the tissue around the guard.

Abstract: A system and method for trialing a modular hip replacement system (10) permits evaluation and replication of the anatomic anteversion rotational angle of the femur. A distal stem component (18) of the hip replacement system (10) includes a proximal portion (34) having a locator feature (35) that is externally accessible when the stem component is mounted within the femur. A proximal trial body assembly (60) is mounted on the proximal portion (34) of the distal stem component (18) to permit rotation of a trial neck component (62). The trial neck component (62) also includes a locator feature (126) that can be externally referenced to determine the anteversion angle.

Abstract: A modular hip prosthesis includes a femoral stem, a spherical head and a coupling member extending from the head defining a neck whose lower end forms a base which plugs into a socket at the top of the stem to form a tapered neck/stem junction. That junction is aligned with the stem axis and has a cross-section with opposite sides that extend generally parallel to the sides of the stem. With such an arrangement, that junction may be relatively long and have a relatively large cross-sectional area thus making a strong junction even in smaller femoral implants.

Abstract: An assembly for use in a procedure for implantation of an orthopaedic joint component, comprises a head part of the joint component which has a tapered bore within it, and a connector part which is tapered inwardly along its length so that it can be received snugly in the tapered bore in the head part, the connector part having a bore within it. A tool includes a spigot which fits snugly into the bore in the connector part. Each of the tool and the connector part has a face which contact one another when the spigot on the tool is fully received in the bore in the connector part, and in which each of the said faces extends generally transverse relative to the aligned axes of the spigot and the bore.

Abstract: An assembly for use in a hip joint replacement procedure which comprises a stem part for location in the intramedullary cavity of a femur, having a tapered spigot at one end, and a head part having a bearing surface defined by a part of a sphere, and a tapered bore formed in it in which the spigot is a snug fit so that the tapered surfaces of the spigot and the socket are in surface to surface contact. The distance from (i) the point on the tapered surface of the spigot at or towards its free end at which the tapered surface thereof no longer contacts the tapered surface of the bore, to (ii) the centre of the sphere which is defined by the bearing surface measured from the said point on the spigot parallel to the axis of the spigot towards the intramedullary cavity, when the spigot is received in the bore in the head part, is at least about 5 mm, with the said point on the tapered surface of the spigot being located between the centre of the sphere and the bearing surface of the head part.

Abstract: A modular hip joint implant and associated method. The modular hip implant includes a femoral stem having a proximal surface defining a dovetail groove having first and second female wings, and a neck component having a distal surface defining a semi-dovetail projection engaging the dovetail groove. The projection includes a single male wing mating with the first femoral wing.

Abstract: The specification discloses a modular system for the formation of a prosthesis for the replacement of a long bone in a human or animal body. The system provides a prosthesis comprising a proximal or distal end component such as a trochanter or condylar head, forming one component of a prosthetic joint, a shaft for assembly with the distal or proximal end component and a stem for engagement in a resected bone. The system allows the assembly of a custom fitted prosthesis from a limited range of components.

Abstract: Modular neck components for hip implants having independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The present disclosure allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables.

Abstract: A femoral head offset and neck length required in a femoral component to be engaged with an acetabular component are determined for establishing appropriate hip mechanics in a prosthetic hip joint. Alternate selected sleeves of different lengths are interposed between a trial femoral head component and a trial femoral stem component movable relative to one another to admit each selected sleeve, interoperatively, for serial trialing to determine an appropriate trial distance, the appropriate trial distance corresponding to the required femoral head offset and neck length in the prosthetic hip joint.

Abstract: A hip joint prosthesis that has a strap plate and a hollow, tapered femoral neck subassembly. The femoral neck includes a flanged force plate that radiates from a head stem base and abuts the femur. Several longitudinal ridges and/or an annular recess or other surface treatment at the head stem base facilitates retention in the femur. Shaped surfaces of a femoral neck at the strap plate interlock in non-rotational engagement with a bore of the head stem base. A tapered stem projects from the force plate and supports a ball head. The strap plate includes laterally and longitudinally displaced elongated fastener holes and stress relieving recesses and/or channels. Fasteners anchor the strap plate to the femoral shaft. A shouldered bolt mounts through the femoral neck to engage the ball head base and draw the ball head base and ball head toward the strap plate and contain the prosthesis to the femur.

Abstract: A prosthetic femoral implant has a stem having a proximal end and a distal end. A circumferential collar is formed on the proximal end of the stem having a proximally facing surface in the form of a circular disc extending radially inwardly and proximally from a maximum outer circumference to a central neck region. The collar has a distally facing surface extending radially inwardly and distally at an included angle with respect to a central longitudinal axis of the neck region of between 120 and 140°. The distal surface of the collar is v-shaped and may be conical in form.

Abstract: A modular implant system allows a surgeon to secure an implant assembly to thee diaphysis of a long bone. The system includes a set of anatomically-designed diaphyseal fitting modular implant components. One end of each diaphyseal implant component is a Morse taper post for connection to another implant component such as a modular articular component, a segmental component or an intercalary component. The other end of each diaphyseal component is a tapered porous surface. In some sizes, the tapered porous surface includes a plurality of steps. The tapered porous surface is received with a tapered bore in the bone diaphysis that is prepared to match the size and shape of the tapered porous surface. The diaphyseal implant is easy to insert and remove, does not bind before fully seating, is designed to prevent stress shielding and provides the surgeon with a host of stem options with its modularity.

Abstract: A modular prosthesis is provided having a first and second prosthesis component and a locking nut. The first prosthesis component is configured to include a mating surface and a threaded shaft extending from the mating surface. The locking nut is formed to include a distal end having a shaped surface. The second prosthesis component is configured to include a mating surface, a nut-receiving cavity and a bore. The mating surface of the second prosthesis component is configured to mate with the mating surface of the first prosthesis component. The nut-receiving cavity is configured to receive the locking nut therein and to have a shaped bottom wall configured to engage the shaped surface of the locking nut. The bore communicates with the nut-receiving cavity through the shaped bottom wall and the mating surface and is sized to receive the threaded shaft therethrough.

Abstract: A modular orthopedic hip prosthesis having three main components: a stem, a proximal body, and a neck. The components are removably connectable and selectively adjustable. The neck is rotationally adjustable about the stem, and the proximal body is both rotationally and axially adjustable about the stem. A collet and locking member hold and lock the proximal body to the stem.

Abstract: A modular prosthesis is provided having a first and second prosthesis component and a locking nut. The first prosthesis component is configured to include a mating surface and a threaded shaft extending from the mating surface. The locking nut is formed to include a distal end having a shaped surface. The second prosthesis component is configured to include a mating surface, a nut-receiving cavity and a bore. The mating surface of the second prosthesis component is configured to mate with the mating surface of the first prosthesis component. The nut-receiving cavity is configured to receive the locking nut therein and to have a shaped bottom wall configured to engage the shaped surface of the locking nut. The bore communicates with the nut-receiving cavity through the shaped bottom wall and the mating surface and is sized to receive the threaded shaft therethrough.

Abstract: A modular long bone prosthesis is provided having a proximal component and a retroversion component. The proximal component is configured at a proximal end to receive a head forming a portion of a joint and is formed at a distal end to mate with additional prosthesis components. The proximal component is formed to simulate an angle inherent in the proximal end of the bone to be replaced and includes an indicator adjacent the distal end to facilitate rotational alignment of the proximal component and additional prosthesis components. The retroversion component includes a proximal end configured to mate with the distal end of the proximal component. The proximal end includes alignment indicia for positioning relative to the indicator on the proximal component.

Abstract: A femoral component of a hip implant is disclosed. The femoral component may be used specifically in a neck sparing resection (i.e., any process or device that avoids removing the femoral neck) and may include a shortened stem (with respect to a conventional stem) having a terminal flare portion for internally contacting a medial calcar portion of the proximal femur, and a significant curvature on its medial side. Other features of the femoral component include, flat side portions on the anterior and posterior sides of the stem, a lateral fin or a wing or T-back to aid in resisting torsional forces. The femoral component may also include a sagittal slot for proper fitting and placement in the femoral canal. The femoral component may also include a neck component that is modular with respect to the stem component. A head component, whether monoblock or modular with respect to the neck component, may also be utilized as part of the femoral component.

Abstract: The instant invention provides a modular shoulder prosthesis. The prosthesis includes an intramedullary rod element which is to be inserted in a bone. The proximal portion of the rod includes a self-holding taper which is telescoped into one end of a bore in the body element. The mating tapered surfaces of the rod and the body bore form a rotationally movable connection. Whereby the body of the prosthesis may be rotationally positioned after insertion of the rod. A neck element having a shaped protrusion is telescoped into a cavity in the other end of the body bore to prevent rotational movement therebetween. A threaded fastener provides a drawing force to lock all of the components together into a fixed orientation.