The present invention relates generally to devices and methods for firmly joining together components of a modular orthopedic prosthesis by securing female to male parts thereof together, and in particular a male part present in a modular component into a correspondingly configured female part (i.e., bore or recess) present in a further modular component thereof. Preferably the male part is tapered, and the bore or recess is correspondingly configured to provide a close tolerance fit therewith. In a preferred embodiment a securement device is used to join the components which securement device includes a heat resistant part or region which shields a heated part from its ambient environment; the securement device is useful in holding a component of an orthopedic prosthesis. In a further preferred embodiment the invention also comprises a heat treatment device which is issued to provide a suitable heat treatment to a component (or part thereof) of a modular orthopedic prosthesis. Methods of utilizing the securement device and the heat treatment device during surgical implantation of modular orthopedic prosthesis is also disclosed.

A coupling device is for connecting prosthesis components by a self-locking press fit on an end, formed as a cone, of a first prosthesis component that is inserted in bone tissue. The coupling device has an outer coupling body with a socket having a conically tapering inner wall, and an expansion sleeve having a lateral surface forming a male taper and an operative surface forming a female taper. The expansion sleeve is mounted in the socket so as to be rotatable about the longitudinal axis thereof, and receives the cone. The expansion sleeve is expandable radially outwardly to form the self-locking press fit, such that the expansion sleeve widens radially when the cone is inserted into the expansion sleeve. As a result, the self-locking press fit between the cone of the first prosthesis component and the coupling device is established.

An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes an elongated stem component that has a proximal body, a neck extending superiorly and medially from the proximal body and a tapered stem extending inferiorly from the proximal body. An anchor is positioned on the neck and is configured to be engaged by a surgical instrument. A system for use in assembling the orthopaedic prosthesis and a method of assembly are also disclosed.

A reverse hip prosthesis include an acetabular cup arrangement configured for insertion into an acetabulum of a patient and fixation therein, an acetabular ball configured for threaded attachment to the acetabular cup arrangement, a femoral stem configured for insertion into an intramedullary femoral canal of the patient, and a femoral cup arrangement configured for attachment to the femoral stem and to operatively receive the acetabular ball therein. The acetabular cup arrangement includes an anchor portion which becomes fixed to the patient's acetabulum and is the largest size suitable for the patient, and an insert which comes in different sizes and are connectable to the anchor portion, so that the most appropriate insert for the patient may be used. The acetabular cup arrangement and ball are interconnected with a threaded stem that also functions as an artificial Ligamentum Teres.

An orthopedic prosthesis for use in a hip replacement surgery. The orthopedic prosthesis includes an elongated stem component that has a proximal body, a neck extending superiorly and medially from the proximal body and a tapered stem extending inferiorly from the proximal body. An anchor is positioned on the neck and is configured to be engaged by a surgical instrument. A system for use in assembling the orthopedic prosthesis and a method of assembly are also disclosed.

An articular ball impactor having a heat resistant material used during heat shrink fit process for providing secure fixation of Morse taper components in modular orthopedic implants. The female Morse component of the articular ball is heated by electromagnetic unit providing thermal expansion. Subsequently, itis impacted over the male Morse taper component and then cooled by commonly used sterile irrigation fluid allowing the female Morse component to shrink thus providing considerable compression, fit and significant reduction of micromotion that has been so widely responsible of fretting and mechanical corrosion.

A prosthetic implant is disclosed comprising: a first component comprising a first inner surface and a first outer surface, a second component comprising a second outer surface adapted to contact and engage with the first inner surface, the second component further comprising a second inner surface, a third component comprising a third outer surface adapted to contact and engage with the second inner surface, the third component further comprising a third inner surface, and a fourth component comprising a fourth outer surface adapted to contact and engage with the third inner surface; wherein the second component is rotatable relative to the first component about a first axis, the third component is rotatable relative to the second component about a second axis perpendicular to the first axis, and the fourth component is rotatable relative to the third component about a third axis perpendicular to the first axis and second axis; the first inner surface and the second outer surface are each formed with a first partial cylindrical shape, the first inner surface and the second outer surface each comprise a flat surface normal to the first axis and are engageable with one another such that the second component is rotatable relative to the first component about the first axis only, the second inner surface and the third outer surface are each formed with a second partial cylindrical shape, the second inner surface and the third outer surface each comprise a flat surface normal to the second axis and are engageable with one another such that the third component is rotatable relative to the second component about the second axis only, and the third inner surface and the fourth outer surface are each formed with a third partial cylindrical shape, the third inner surface and the fourth outer surface each comprise a flat surface normal to the third axis and are engageable with one another such that the fourth component is rotatable relative to the third component about the third axis only.

According to various embodiments, a trial system (100) and instruments can be used to assist in confirming that a planned procedure is achieved. In various embodiments, the trial or provisional portions can include markings (110) on a trial or provisional portion to compare to one or more implanted members to ensure an planned position is achieved.

Kits and methods for use in intraoperative trialling of hip prostheses to determine an appropriate length for the femoral neck component of a prosthetic hip joint, are described. A kit for use in selecting a femoral neck component of an orthopaedic joint prosthesis kit comprises a first and a second broach. Each of the first and second broaches has a neck connection element comprising a projection extending from a proximal surface of the broach, each projection having a length. The projection on the first broach has a different length than the projection on the second broach. The kit also includes a trial femoral neck component having a neck connection element in the form of a recess in a distal surface. The recess is configured to mate with the projection on each of the first or second broaches such that mating of the trial femoral neck component with the first broach provides an assembly with a first neck length, and the mating of the trial femoral neck component with the second broach provides an assembly with a second neck length.

Kits and methods for use in intraoperative trialling of hip prostheses to determine an appropriate length for the femoral neck component of a prosthetic hip joint, are described. A kit for use in selecting a femoral neck component of an orthopaedic joint prosthesis kit comprises a first and a second broach. Each of the first and second broaches has a neck connection element comprising a projection extending from a proximal surface of the broach, each projection having a length. The projection on the first broach has a different length than the projection on the second broach. The kit also includes a trial femoral neck component having a neck connection element in the form of a recess in a distal surface. The recess is configured to mate with the projection on each of the first or second broaches such that mating of the trial femoral neck component with the first broach provides an assembly with a first neck length, and the mating of the trial femoral neck component with the second broach provides an assembly with a second neck length.