Abstract: Shoulder joint implants are disclosed herein for use in shoulder reconstruction that are configured to facilitate the inclusion a central bone screw for augmented bone fixation. The implant can include a baseplate (or metaglene) configured to secure a glenosphere or other prosthetic component to the glenoid. To facilitate lateral or proximal insertion of a central bone screw through the implant, a throughbore defined along the central axis of the metaglene can be widened to accommodate the maximum diameter of the screw. To enable fixation of the glenosphere to the metaglene, a collet can be configured to engage the smaller diameter of a glenosphere coupling element and inserted into the central throughbore. The collet and the bone screw can be separate parts, thereby making insertion of the bone screw optional. Alternatively, the collet and bone screw can be integrated together to form a unitary construct.

Abstract: A device is provided, including a cutting rib, the cutting rib including an arcuate portion having an outer sharp edge and a centralizer configured to receive the cutting rib through a radial slot, the radial slot forming a gap with the cutting rib. The arcuate portion of the cutting rib is formed into a profile that follows a surface of the centralizer, the outer sharp edge of the arcuate portion of the cutting rib has a wavy profile that forms a tunnel in the gap between the centralizer and the cutting rib, and the outer sharp edge of the arcuate portion of the cutting rib protrudes outwardly from the surface of the centralizer. A method for using the device to cut bone in a surgical configuration is also provided.

Abstract: A total hip surface replacement implant, comprising a femur component and an acetabular cup component, wherein the femur component is in a half-spherical shell shape and is formed by polyether ether ketone (PEEK) or derivatives thereof; the shape of the acetabular cup component matches that of the femur component, and the acetabular cup component is tightly attached to an outer surface of the half-spherical shell of the femur component; the acetabular cup component is formed by ultrahigh molecular weight polyethylene; or the femur component can be formed by ultrahigh molecular weight polyethylene, and meanwhile the acetabular cup component is formed by polyether ether ketone (PEEK) or derivatives thereof.

Abstract: The present invention includes a method for generating a three-dimensional model of a bone and generating a cut plan for excavating a portion of the bone according to the cut plan to allow the insertion of a custom implant. In a particular arrangement, the method also includes excavating the bone with an autonomous extremity excavator utilizing the cut plan generated by a processor. In a further arrangement, the method includes generating a digital model of a custom implant and generating, using the digital model, a physical model sharing the same dimensions as the digital module using manufacturing device.

Abstract: A device for attaching soft tissue to a prosthetic implant. The device includes a body that includes a frame and a porous section disposed within the frame, wherein the porous section permits the passage of body fluids therethrough to encourage the healing of the soft tissue as well as the growth of soft tissue into and through the porous section.

Abstract: A spinal implant adapted to be positioned within a disc space between adjacent vertebrae includes a first intradiscal element, a second intradiscal element, and a coupling mechanism. The first and second intradiscal elements include respective first and second outer surfaces adapted to be positioned adjacent an endplate of respective first and second adjacent vertebrae. The first and second intradiscal elements further include respective first and second medial surfaces that are opposite the respective first and second outer surfaces, where the second medial surface is adapted to generally face the first medial surface upon assembly of the first intradiscal element with the second intradiscal element. The coupling mechanism is associated with the first and second medial surfaces and is adapted to provide relative rotational movement between the first and second intradiscal elements in a plane generally parallel with the first and second medial surfaces.

Abstract: A device is provided, including a cutting rib, the cutting rib including an arcuate portion having an outer sharp edge and a centralizer configured to receive the cutting rib through a radial slot, the radial slot forming a gap with the cutting rib. The arcuate portion of the cutting rib is formed into a profile that follows a surface of the centralizer, the outer sharp edge of the arcuate portion of the cutting rib has a wavy profile that forms a tunnel in the gap between the centralizer and the cutting rib, and the outer sharp edge of the arcuate portion of the cutting rib protrudes outwardly from the surface of the centralizer. A method for using the device to cut bone in a surgical configuration is also provided.

Abstract: Various joint replacements are disclosed herein, as are methods of use thereof. The joint replacements can have a flexible band or multiple flexible bands that can link together a first part of the joint replacement and a second part of the joint replacement. The flexible band or bands can be tensioned to establish proper tension in the patient's joint. In certain circumstances, the joint replacement can be a shoulder joint replacement.

Abstract: An orthopedic prosthesis for use in a hip replacement surgery includes an implantable stem component. The implantable stem component includes a core and a shell extending over the core. The shell includes a polymeric material and is configured to receive a femoral head component. Metal foam may extend over a portion of the shell.

Abstract: A dynamic porous coating for an orthopedic implant, wherein the dynamic porous coating is adapted to apply an expansive force against adjacent bone so as to fill gaps between the dynamic porous coating and adjacent bone and to create an interference fit between the orthopedic implant and the adjacent bone.

Abstract: A femoral implant for total hip replacement includes a cage screw, a femoral head and a base plate provided between the cage screw and the femoral head, to minimize the stress transferred from the femoral head to the bone. The femoral implant may optionally include devices for lateral fixation (for example, internal and/or external screws for lateral fixation) and a device for minimizing micro-motion that is integral to, and extends from, the cage screw.

Abstract: In one instance, the disclosure is a moldable, biocompatible, bioactive, and resorbable hip implant made to be implanted after femoral head ostectomy. The hip implant can be configured so that a portion of the implant can fit into the femoral canal after the femoral head is excised, and another portion can fit into the joint space. The hip implant can be configured to have a honeycomb structure capable of receiving and retaining materials such as antibiotics, stem cells, and platelet rich plasma for treatment after femoral head ostectomy. The resorbable material comprising the hip implant can degrade or dissolve over time and be resorbed by the body while scar tissue forms a pseudoarthrosis in place of the resorbed hip implant.

Abstract: A method, and devices for facilitating the method, for shoulder replacement surgery. The method entails establishing a mechanical support in a the anatomical neck plane of the proximal humeral head, fixing a jig to the mechanical support, where the jig supports a drill guide with its axis perpendicular to the anatomical neck plane, adjusting the drill guide it coincide with the axis of the humeral head, drilling a hole through the humeral head for insertion of a shaft which will support and rotate a reaming bit. The reaming bits used to resurface the humeral head and the glenoid fossa are inserted through the back of the patient, through a gap created between two easily separated muscles, rather than through a gap cut through the subscapularis muscle on the front of the joint. A suitable jig is provided to facilitate the method.

Abstract: A method of forming an orthopedic implant, the method comprising the steps of providing a first implant component and a second implant component, the first implant component having a stem and a second implant component including a head defining a female taper sized to receive the stem; coupling the stem to the female taper of the head; forming a modular injunction between the stem and head; applying a seal to the modular injunction to limit bodily fluid from contacting the modular injunction; and forming the orthopedic implant.

Abstract: A post-operative pain inhibitor system comprises a controller and leads. Neuro-stimulator circuitry may be included within the patient controller or within one or more prosthetic components for generating a signal. In one example, a hip implant includes a prosthetic component having at least one electrode where the at least one electrode is configured to deliver energy pulses. Topical leads, percutaneous leads, subcutaneous leads, intraosseous leads, or leads can be placed in proximity to the operative field corresponding to the prosthetic component installation. The lead or electrodes can be coupled to neuro-stimulation circuitry to stimulate peripheral nerve fibers to affect body generated action potentials. A transmitter or power source can be housed in a prosthetic hip component. Controller can modify the pulse width, pulse shape, pulse repetition rate, and pulse amplitude of the signal thereby allowing the patient to adapt the signal to minimize their perceived pain.

Abstract: A bone repairing kit including a drilling device, a pushing device, a clamping member and a hole saw. An end of a tube body of the drilling device is a knife portion. When the tube body rotates with respect to a femur, a bone column is cut by the knife portion and located in the tube body. The pushing device includes a hollow tube and a push bar. The hollow tube is for receiving the tube body. The push bar is for touching and pushing the bone column in the tube body. The clamping member is for clamping the bone column. The hole saw includes a receiving body and cutting knives. The receiving body has a recess for receiving an end of the bone column. The cutting knives surrounding on an inner wall of the recess are for cutting an edge of the end of the bone column.

Abstract: A femoral head prosthesis (110) comprises an articulating surface (112) which is more than hemi-spherical; an internal recess (114) having a longitudinal axis defining a pole P of the articulating surface (112), the longitudinal axis passing through the centre of curvature of the articulating surface (112); a first edge (116) which constitutes a posterior edge in use, and a second edge (118) which constitutes an anterior edge and/or an antero-inferior edge in use. The first edge (116) is further from the pole P than the second edge (118). Also provided is a femoral prosthesis comprising a femoral head, and a femoral implant comprising a femoral stem and a femoral head. The prostheses and implants of the invention find use in total hip replacements.

Abstract: A kit for use in a procedure for implantation of an orthopaedic joint prosthesis includes a head component of an orthopaedic joint prosthesis, which comprises a body part having a convex bearing surface, and a reverse face at which the head component can be connected to a mating component of the joint prosthesis, in which the head component has a chamfer surface extending around at least part of its periphery where the bearing and reverse faces come together, and a plurality of markings on the chamfer surface. The kit includes a trial head component which comprises a body part having a convex trial bearing surface and a reverse face, in which the trial head component has a plurality of markings on the trial bearing surface at or towards the interface between it and the reverse face.

Abstract: A ball joint prosthesis can include a shell, having an outer articular surface of a first material and an open distal end, configured to receive a sealing receptacle. A volume of a second material, within the shell, can be more compressible than the first material. The ball joint prosthesis can have an effective compressibility that is intermediate between a compressibility of the first material and a compressibility of the second material.

Abstract: Femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants, e.g., hip replacement implants, and methods of using femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants are provided. Prosthetic femoral heads, mobile inserts, and acetabular components are provided that can alleviate soft tissue impingement, reduce implant wear, and/or reduce frictional torque. Modular junctions are provided that can minimize the incidence of loosening and micromotion that can occur at modular junctions of orthopedic implants.

Abstract: The invention discloses a surgical technique and apparatus for minimally invasive replacement of a fractured femoral head in hip arthroscopy. The fractured femoral head is first removed from the patient, and an incision made on the patient on a lateral aspect of the operative thigh. A hole is then drilled into the cortex of the operative femur of the patient through the incision. The femoral neck and femoral canal of the operative femur are reamed by inserting a reamer through the drilled hole. A hip prosthesis is then inserted into the wound and injected with molding. The hip prosthesis includes a femoral component having a distal end and a proximal end, the distal end inserted and anchored in the reamed femoral canal, and a femoral head component with smooth surface. The femoral head component contains a deflated balloon that, when inflated with molding, is similar to a neo-femoral head.

Abstract: The present teachings are directed to a shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between a stem and a head. In one example, a prosthesis has a stem having a first longitudinal axis. The prosthesis can also include an adaptor including a first taper. The first taper can have a first taper axis. The prosthesis can include a head supported by the adaptor. The head can be selectively oriented and then coupled to the first taper and the combination can be selectively orientated and the coupled to the stem.

Abstract: A method and device for measuring blood flow in the bone after a fracture, wherein a hole is drilled into the bone. The method includes the steps of inserting the metal sleeve of an osteoscope into the hole; inserting the optics of an osteoscope into the metal sleeve and focused on the cavity created by the drill; filling the device and the cavity with a physiological solution such that the pressure of the solution is above the systolic blood pressure; decreasing the pressure of the solution while observing the cavity through the osteoscope, and recording the pressure in the system at the commencement of bleeding.

Abstract: A hip arthroplasty prosthesis for treating a patient condition includes a stem portion configured to penetrate into the bone of a femur of the patient, and includes a head portion formed of a polymeric material and being fixedly attached to the stem portion. The head portion may include a spherical portion with a diameter sized to match the diameter of an acetabulum of an adult patient in a manner permitting the acetabulum to interface with and articulate relative the head portion over a distributed portion of the head portion.

Abstract: A seal for preventing a bodily fluid from penetrating an orthopedic implant comprising a tapered section adapted to conformingly mate to a stem of a first implant component, and a collar section extending from and circumferentially surrounding a portion of the tapered section, the collar section adapted to mate to a base of a second implant component such that the tapered section and collar section define an opening therethrough configured to receive the first implant component.

Abstract: An implant for a femoral head of a patient. The implant includes a shell implantable on the femoral head of the patient and correcting a defect of the femoral head. The shell is designed preoperatively to have a patient-specific first surface for articulation with the patient's acetabulum and a patient-specific periphery mateable with a periphery of the defect. The shell caps the defect and the first surface of the shell is continuous to a remaining healthy surface of the femoral head. The defect can be a bone defect, a cartilage defect or a combination thereof.

Abstract: An improved composition of titanium sintered titanium carbide is provided. The composition provides an improved degree of strength and toughness and improved compatibility with medical imaging. The composition provides good compatibility with sintered polycrystalline diamond, achieving a good mechanical fit in terms of the combined compressibility and thermal expansion during the sintering process to minimize stress or cracking between the substrate and the diamond layer.

Abstract: A bone repairing kit including a drilling device, a pushing device, a clamping member and a hole saw is provided. An end of a tube body of the drilling device is a knife portion. When the tube body rotates with respect to a femur, a bone column is cut by the knife portion and located in the tube body. The pushing device includes a hollow tube and a push bar. The hollow tube is for receiving the tube body. The push bar is for touching and pushing the bone column in the tube body. The clamping member is for clamping the bone column. The hole saw includes a receiving body and cutting knives. The receiving body has a recess for receiving an end of the bone column. The cutting knives surrounding on an inner wall of the recess are for cutting an edge of the end of the bone column.

Abstract: An artificial hip joint consisting of multi-layer shell core composite structural components includes an artificial acetabular bone (1) and an artificial femoral head (2) which are mutually matched with each other. The artificial acetabular bone (1) has a multi-layer shell core composite structure and is constituted of a ceramic acetabular bone lining (1-1), transitional layers (1-2, 1-3), an acetabular bone shell made of a porous metal or a porous alloy or a porous toughened ceramic (1-4). The artificial femoral head (2) has a multi-layer shell core composite structure and is constituted of a ceramic spherical shell layer (2-1), a transitional layer (2-5) and a toughened ceramic inner core (2-2). The artificial acetabular bone lining and the artificial femoral head spherical shell layer of the hip joint have high rigid, anti-corrosion and anti-wear performance. The artificial acetabular bone shell layer and the femoral head inner core layer have high tough, shockresistant performance.

Abstract: A substantially cup-shaped prosthetic device for a joint is provided. The prosthetic device includes an outer surface configured to operatively engage at least one of a first bone of the joint and a component, an inner surface including at least a portion configured to connect to a second bone of the joint, and at least one reservoir having an opening at each of the inner surface and the outer surface and extending therebetween.

Abstract: The invention reduces friction and wear in partial hip prosthesis by combining optimized geometry of the articulation and surface treatment of the prosthetic component. The acetabulum is reamed to the bone. One of the articulating surfaces—either that of the reamed acetabulum, or that of the femoral head prosthesis is a-spherical so that a fluid-filled gap is formed at the area of major load transfer. The fluid-filled gap is sealed by an annular area of contact, over which the concave and the convex components are congruent. The preferred surface treatment is by diamond-like coating, which results in very low coefficient of friction and high abrasion resistance against the bone. The prosthetic head is fixed to the femur by either a conventional stem, a perforated shell, or a femoral neck prosthesis screwed onto the femur so that it is partially covered by bone and partially exposed on the medial-inferior aspect, where it abuts the reamed cortex of the calcar region.

Abstract: An implant assembly having an articulating surface and an axial cavity arranged to receive an end of a bone, the axial cavity being generally circular in cross section in a plane normal to the axis of the implant, and including a spacing element detachable from the implant. At least a portion of the interior surface of the cavity is roughened and is arranged to abrade bone when the end of the bone is received in the cavity. The spacing element is arranged to prevent the implant from fully seating on the end of the bone such that the implant and the end of the bone are in a predetermined spaced apart arrangement.

Abstract: A femoral neck prosthesis (10) with a cross-section defined by a perimeter comprising: first and second arcuate portions (12, 14) disposed opposite one another; and first and second substantially straight portions (16, 18) disposed opposite one another and in between the first and second arcuate portions, wherein the first and second straight portions are non-parallel with respect to one another.

Abstract: A modular femoral prosthesis for use during performance of a hip revision procedure includes a proximal body component, a distal stem component, and a locking bolt. Surgical instruments and methods for use in implanting such a modular femoral prosthesis are disclosed.

Abstract: A femoral implant for total hip replacement includes a cage screw, a femoral head and a base plate provided between the cage screw and the femoral head, to minimize the stress transferred from the femoral head to the bone. The femoral implant may optionally include devices for lateral fixation (for example, internal and/or external screws for lateral fixation) and a device for minimizing micro-motion that is integral to, and extends from, the cage screw.

Abstract: A process for forming a ceramic layer comprising a compound of a metal on a deposition surface of a workpiece comprises providing a reactive gas, selecting the amounts of a vapor of the metal and ions of the metal relative to each other, generating the metal vapor, and projecting an ion beam of the metal ions. The metal vapor, the metal ions, and the reactive gas form the ceramic layer with a desired structure. The process may include the step of controlling a deposition surface temperature. In one embodiment, the metal vapor comprises zirconium vapor and the ion beam comprises zirconium ions. The relative amounts of the zirconium vapor and the zirconium ions are selected to form a zirconia ceramic layer on the deposition surface. The zirconia may have multiple crystal phases that are formed according to a predetermined ratio.

Abstract: A hip prosthesis is provided for insertion into a femur. In one exemplary embodiment, the hip prosthesis includes a stem having a proximal end, a distal end, and a longitudinal axis. This stem may include anterior and posterior locking surfaces which diverge away from the longitudinal axis. A shank portion may extend distally from the anterior and posterior locking surfaces and converge at an angle distally toward the longitudinal axis.

Abstract: A medical device for delivering an action to an area of a hip joint or its surroundings, inside a human body, is provided. The hip joint of a patient comprises a collum femur and a ball shaped caput femur, being the proximal parts of the femoral bone, and an acetabulum, being a bowl shaped part of the pelvic bone. The medical device comprising; an elongated member, having a length axis along its elongated distribution, comprising a first portion, adapted to enter the body of the patient, and a mechanical element, adapted to be used during an operation in the hip joint or its surroundings, inside the body. The first portion of the elongated member comprises a holding member adapted to hold the mechanical element inside the body of the patient, wherein the first portion of the elongated member have a first portion cross-section area substantially perpendicular to the length axis of the elongated member.

Abstract: A medical device for implantation in a hip joint of a patient is provided. The medical device is adapted to be fixated to the femoral bone of the patient. The medical device comprises an inner and an outer surface, wherein a contacting portion of said inner surface is spherical and adapted to face the center of the hip joint when said medical device is implanted, and wherein said medical device is adapted to receive a prosthetic replacement for the caput femur fixated to the pelvic bone having a spherical portion. The medical device comprises at least one extending portion, extending said contacting portion of said inner surface such that said at least one extending portion clasps said spherical portion of said prosthetic replacement for the caput femur, such that said spherical portion is restrained in said medical device.

Abstract: A medical device for treating hip joint osteoarthritis in a human patient is provided, the hip joint comprises an acetabulum, being a part of the pelvic bone, and a caput femur, being connected to the collum femur and being the upper extremity of the femoral bone. The caput femur and collum femur further comprises cortical bone, the outer more sclerotic bone, and cancellous bone, placed in the bone marrow, said medical device comprising: an artificial caput femur surface, adapted to be in contact with the acetabulum surface or an artificial replacement therefor, and a fixating member adapted to at least partly be stabilized by the cortical bone of a stabilizing part of the collum femur.

Abstract: A medical device for treating hip joint osteoarthritis by providing a joint surface is provided. The medical device comprises at least two artificial hip joint surface parts, wherein said at least two artificial hip joint surface parts are adapted to be connected to each other to form an artificial hip joint surface during an operation. Furthermore a method of treating a hip joint of a human patient by providing said the medical device is provided. The hip joint comprising a caput femur and an acetabulum, the method comprises the steps of: cutting the skin of said human patient, dissecting an area of the pelvic bone on the opposite side from said acetabulum, creating a hole in said dissected area, said hole passing through said pelvic bone and into said hip joint of said human patient, and providing said medical device to said hip joint, through said hole in said pelvic bone of said human patient.

Abstract: A medical device for implantation in a hip joint of a patient, the natural hip joint having a ball shaped caput femur integrated with a collum femur having a collum and caput center axis, extending longitudinal along the collum and caput femur, in the center thereof, as the proximal part of the femoral bone with a convex hip joint surface towards the centre of the hip joint and a bowl shaped acetabulum as part of the pelvic bone with a concave hip joint surface towards the centre of the hip joint, the medical device comprising; an artificial caput femur comprising a convex surface towards the centre of the hip joint, an elongated portion adapted to be connected to a prosthetic spherical portion of said artificial convex caput femur and fixated to the pelvic bone of the human patient.

Abstract: A medical device for treating hip joint osteoarthritis in a human patient by providing at least one artificial hip joint surface is provided. The medical device is adapted to be inserted through a hole in said pelvic bone from the opposite side from said acetabulum, to be in contact with said pelvic bone, and to transfer a load from said medical device to said pelvic bone through said contact with said pelvic bone. Furthermore a medical device for treating osteoarthritis by providing a joint surface is provided, wherein said medical device comprises an artificial acetabulum surface having a largest diameter. The artificial acetabulum surface is adapted to be inserted through a hole in the pelvic bone from the opposite side from acetabulum of a human patient for providing said joint surface, the artificial acetabulum surface comprises at least one supporting member.

Abstract: A medical device for fixation in a femoral bone of a patient is provided, the medical device comprises: a connecting portion adapted to be connected to a prosthetic hip joint contacting portion, an expanding portion, and a bone contacting surface on the expanding portion. The expanding portion could be adapted to be at least partially inserted into the femoral bone of a patient and to expand within the femoral bone, such that the bone contacting surface is placed in contact with the inside of the femoral bone for fixating the medical device to the femoral bone. By the fixation using an expanding portion a sturdy fixation is achieved without the need to go into or penetrate bone, or the need for fixation using bone cement.

Abstract: A medical device for treating hip joint osteoarthritis in a human patient by providing at least one artificial hip joint surface is provided. The hip joint having a ball shaped caput femur as the proximal part of the femoral bone with a convex hip joint surface towards the centre of the hip joint and a bowl shaped etabulum as part of the pelvic bone with a concave hip joint surface towards the centre of the hip joint. The medical device comprises the artificial hip joint surface comprising at least one of; an artificial caput femur or an artificial caput femur surface comprising, a convex form towards the centre of the hip joint, and an artificial acetabulum or an artificial acetabulum surface comprising, a concave form towards the centre of the hip joint.

Abstract: A medical device for treating hip joint osteoarthritis by providing at least one hip joint surface for a human patient is provided, wherein said medical device has a largest diameter or a largest cross-sectional distance, and an opening, and wherein said largest diameter or cross sectional distance is adapted to be changed during an operation. Furthermore, a method of treating a hip joint of a human patient by providing said the medical device is provided. The hip joint comprising a caput femur and an acetabulum, the method comprises the steps of: cutting the skin of the patient, dissecting an area of the pelvic bone on the opposite side from the acetabulum, creating a hole in said dissected area, said hole passing through said pelvic bone and into the hip joint of the patient, and providing said medical device to the hip joint, through said hole in the pelvic bone of the patient.

Abstract: A hip joint prosthesis having a socket insert and a hip socket, a conical guide pin being situated on the pole of the socket insert and a guide bore being situated at the base of the hip socket and the guide pin being located in the guide bore in the installed state of the socket insert in the hip socket,

Abstract: A process for forming a ceramic layer comprising a compound of a metal on a deposition surface of a workpiece comprises providing a reactive gas, selecting the amounts of a vapor of the metal and ions of the metal relative to each other, generating the metal vapor, and projecting an ion beam of the metal ions. The metal vapor, the metal ions, and the reactive gas form the ceramic layer with a desired structure. The process may include the step of controlling a deposition surface temperature. In one embodiment, the metal vapor comprises zirconium vapor and the ion beam comprises zirconium ions. The relative amounts of the zirconium vapor and the zirconium ions are selected to form a zirconia ceramic layer on the deposition surface. The zirconia may have multiple crystal phases that are formed according to a predetermined ratio.

Abstract: An assembly for use in a procedure for implantation of an orthopedic 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: 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.