WO1995027450A1 - Unicompartmental knee prosthesis________________________________ - Google Patents
Unicompartmental knee prosthesis________________________________ Download PDFInfo
- Publication number
- WO1995027450A1 WO1995027450A1 PCT/GB1995/000821 GB9500821W WO9527450A1 WO 1995027450 A1 WO1995027450 A1 WO 1995027450A1 GB 9500821 W GB9500821 W GB 9500821W WO 9527450 A1 WO9527450 A1 WO 9527450A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- knee prosthesis
- meniscal
- tibial
- unicompartmental knee
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3868—Joints for elbows or knees with sliding tibial bearing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30579—Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. fixation devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2002/3895—Joints for elbows or knees unicompartimental
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Definitions
- the invention relates to a knee prosthesis, particularly to a unicompartmental knee prosthesis.
- Unicompartmental knee prostheses which allow replacement of only one side of a knee joint, are known. This type of prosthesis is used when one side of a knee joint is damaged or diseased but the other side is sufficiently healthy to continue to function normally. Unicompartmental replacement of one side or the other of the knee joint avoids unnecessary removal of healthy bone and other tissue, reduces the recovery time of the patient and gives a higher probability of restoration of full function of the knee joint-
- most known unicompartmental knee prostheses consist effectively of two components, the tibial component and the femoral component, although the tibial component may be formed from a metal base and a high-strength, low-friction plastics upper surface fixedly connected to the base.
- British patent no. 1534263 describes a unicompartmental three-part knee prosthesis which has a meniscal component located between the tibial and femoral components and which glides on the superior surface of the tibial component so as to accommodate small amounts of misalignment created during surgery.
- Two alternative versions are disclosed; an unrestricted arrangement and an arrangement wherein the movement of the meniscal component relative to the tibial component is restricted by means of an interengaging tongue and recess and, if rotation is to be restricted as well, by the provision of an upstanding wall located on the tibial component.
- Unrestricted arrangements have been found to be unsatisfactory for some patients because the meniscal component can become disengaged from the tibial component.
- the proposed restricted arrangement involves the provision of an undercut projection and recess and also an appropriately shaped wall, all of which is expensive to manufacture.
- the invention provides a unicompartmental knee prosthesis as claimed in claim 1.
- Advantageous features are set out in the subsidiary claims.
- the prosthesis according to the invention allows the meniscal component to self-centre itself to provide the best possible configuration of the overall assembly.
- medial-lateral, anterior-posterior and rotational movement are all limited so as to provide adequate stability of the knee joint for the recipient of the prosthesis.
- the features needed to provide this stability are easy and therefore inexpensive to provide in the meniscal and tibial components which result in provision of an improved product.
- Figure 1 is a side view of a femoral component forming part of a unicompartmental knee prosthesis according to the present invention
- Figure 2a is a plan view of a meniscal component forming part of a unicompartmental knee prosthesis according to the invention
- Figure 2b is a sectional view taken along the line II-II shown in Figure 2a;
- Figure 3a is a plan view of a tibial component forming part of a unicompartmental knee prosthesis according to the invention
- Figure 3b is a sectional view taken along the line III-III shown in Figure 3a;
- Figure 4 is a sectional side view of a first embodiment of a unicompartmental knee prosthesis according to the invention consisting of the components illustrated in Figures 1 to 3b;
- Figure 5 is a sectional side view of an alternative embodiment of a unicompartmental knee prosthesis according to the invention.
- FIGs 1 to 3b show the individual components of a unicompartmental knee prosthesis according to the invention.
- the femoral component 10 of the knee prosthesis assembly is shown in Figure 1 and consists essentially of a unicondylar surface 12.
- the femoral component 10 is of standard shape and also includes some form of fixing component (not shown), preferably consisting of appropriate pegs or stems. By means of the fixing component (not shown), the femoral component 10 can be affixed to the prepared femur of the recipient of the prosthesis assembly.
- the fixing component forms no part of the present invention and will not be described in further detail.
- the meniscal component 20 of the present invention is shown in Figures 2a and 2b.
- the meniscal component 20 is generally D-shaped in plan view.
- the meniscal component 20 has an upper condylar surface 22 which is shaped to interact with and support the condylar surface 12 of the femoral component 10.
- the shape of the upper surface 22 of the meniscal component 20 is well known and will not be further described.
- the meniscal component 20 also incorporates a planar lower surface 24 in which are located anterior and posterior tapered recesses 26a, 26b.
- the recesses 26,26b increase in depth towards the edge of the meniscal component 20.
- each recess 26a, 26b is substantially wedge-shaped in plan view as can be seen from Figure 2a.
- the ends 28a, 28b of the recesses 26a, 26b are preferably straight and arranged parallel to one another. However, if desired, the ends 28a, 28b could be arranged so as to be arcuate.
- the tibial component 30 of the prosthesis assembly is shown in Figures 3a and 3b.
- the tibial component 30 is similar in shape to the meniscal component 20 when viewed from above.
- the tibial component 30 consists of a plateau 32 having a planar upper surface 34 across which the lower surface 24 of the meniscal component 20 is intended to glide.
- the tibial component 30 also incorporates fixing elements 36 which can take the form of pegs as shown or stems.
- the fixing elements 36 can be varied according to requirements and form no part of the present invention.
- the plateau 32 incorporates anterior and posterior ramps 38a, 38b.
- the ramps 38a, 38b increase in height towards the edge of the tibial component 30 although the maximum height of each ramp 38a, 38b does not exceed the maximum depth of the recesses 26a, 26b formed in the meniscal component 20.
- the sides of the ramps 38a, 38b are preferably parallel to one another although a certain amount of divergence is possible.
- the relative dimensions of the ramps 38a, 38b and the recesses 26a, 26b are such that, when the meniscal component 20 is carried by the tibial component 30, the ramps 38a, 38b extend into the recesses 26a, 26b.
- the spacing between the ramps 38a, 38b is greater than the spacing between the recesses 26a, 26b, anterior and posterior movement of the meniscal component 20 with respect to the tibial component 30 is allowed.
- the width of the ramps 38a, 38b is less than the minimum width of the recesses 26a, 26b, medial and lateral movement is also permitted.
- the fact that the recesses 26a, 26b are substantially wedge-shaped whereas the ramps 38a, 38b are substantially elongate means that a certain amount of rotation of the meniscal component 20 with respect to the tibial component 30 can also be achieved.
- the femoral and tibial components 10, 30 are formed from metal, preferably a cobalt-chrome alloy.
- the condylar surface 12 of the femoral component and the upper surface 34 of the tibial component 30, including the upper surfaces of the ramps 38a, 38b, are highly polished to give a smooth finish.
- the fixing components of the femoral and tibial components 10, 30 and/or the other surfaces which are designed to come into contact with bone may be provided with a textured finish designed to encourage bone ingrowth. These surfaces may also be coated with an appropriate coating such as Hydroxyapatite.
- the meniscal component 20 is preferably formed from a low density plastics material.
- a suitable material is ultra-high molecular weight polyethylene.
- FIG. 4 The three individual components illustrated in Figures 1 to 3b are shown in assembled form in Figure 4.
- the femoral component 10 is supported by the meniscal component 20 which, in turn, rests on the tibial component 30.
- the interaction of the condylar surface 12 of the femoral component 10 and the upper surface 22 of the meniscal component 20 is the same as that in other unicompartmental knee prosthesis. It is the interaction of the meniscal component 20 and the tibial component 30 which is different in the case of this assembly.
- the lower surface 24 of the meniscal component rests on the upper surface 34 of the tibial component 30 and the ramps 38a, 38b project into the recesses 26a, 26b.
- the lower surface 24 of the meniscal component 20 glides across the upper surface 34 of the tibial component 30 within the limitations imposed by the ramps 38a, 38b and the recesses 26a, 26b.
- Anterior movement of the meniscal component 20 with respect to the tibial component 30 is limited by the abutment of the upper surface of the anterior ramp 38a with the tapered wall of the anterior recess 26a.
- posterior movement of the meniscal component 20 with respect to the tibial component 30 is limited by abutment of the upper surface of the posterior ramp 38b with the tapered wall of the posterior recess 26b.
- meniscal component 20 can move anteriorly, posteriorly, laterally and medially, and can also rotate, all with respect to the tibial component 30, means that the meniscal component 20 can, within certain limits, select its own preferred position with respect to the tibial component 30. As mentioned above, this means that the assembly shown in Figure 4 can tolerate small amounts of misalignment between the femoral and tibial components created during the operative procedure.
- FIG. 5 An alternative embodiment of the invention is illustrated in Figure 5.
- the embodiment illustrated in Figure 5 is similar to the embodiment illustrated in Figure 4.
- each recess 26e, 26f and ramp 38e, 38f ends in a small vertical step. This ensures that the risk of the meniscal component 20 riding up onto the ramps 38e, 38f of the tibial component 30 is reduced.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21456/95A AU2145695A (en) | 1994-04-11 | 1995-04-11 | Unicompartmental knee prosthesis |
EP95914473A EP0702537A1 (en) | 1994-04-11 | 1995-04-11 | Unicompartmental knee prosthesis-------------------------------- |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9407153.7 | 1994-04-11 | ||
GB9407153A GB9407153D0 (en) | 1994-04-11 | 1994-04-11 | Unicompartmental knee prosthesis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995027450A1 true WO1995027450A1 (en) | 1995-10-19 |
Family
ID=10753360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1995/000821 WO1995027450A1 (en) | 1994-04-11 | 1995-04-11 | Unicompartmental knee prosthesis________________________________ |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0702537A1 (en) |
AU (1) | AU2145695A (en) |
GB (1) | GB9407153D0 (en) |
WO (1) | WO1995027450A1 (en) |
Cited By (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2138910A1 (en) * | 1997-09-18 | 2000-01-16 | Ayala Andrade Juan De Dios | Locked tibial component for total knee prosthesis and guide for the positioning thereof. |
US6090144A (en) * | 1998-05-12 | 2000-07-18 | Letot; Patrick | Synthetic knee system |
US6210444B1 (en) | 1999-10-26 | 2001-04-03 | Bristol-Myers Squibb Company | Tibial knee component with a mobile bearing |
US6210445B1 (en) | 1999-10-26 | 2001-04-03 | Bristol-Myers Squibb Company | Tibial knee component with a mobile bearing |
US6217618B1 (en) | 1999-10-26 | 2001-04-17 | Bristol-Myers Squibb Company | Tibial knee component with a mobile bearing |
EP1097679A1 (en) * | 1999-10-29 | 2001-05-09 | Sulzer Orthopädie AG | Unicompartmental knee prosthesis |
US6319283B1 (en) | 1999-07-02 | 2001-11-20 | Bristol-Myers Squibb Company | Tibial knee component with a mobile bearing |
US6554866B1 (en) | 1999-10-29 | 2003-04-29 | Sulzer Orthopedics Ltd. | Mono-condylar knee joint prosthesis |
WO2004100839A1 (en) * | 2003-05-19 | 2004-11-25 | Eugene Sherry | A prosthetic component, a method of attaching a prosthetic component to a bone, a method of performing knee replacement surgery and a frame for application to a knee joint during knee replacement surgery |
US6911044B2 (en) * | 1999-05-10 | 2005-06-28 | Barry M. Fell | Surgically implantable knee prosthesis having medially shifted tibial surface |
US7297161B2 (en) | 1999-05-10 | 2007-11-20 | Fell Barry M | Surgically implantable knee prosthesis |
WO2006118822A3 (en) * | 2005-04-29 | 2007-11-29 | Barry M Fell | Surgically implantable prosthetic system |
US7338524B2 (en) | 1999-05-10 | 2008-03-04 | Fell Barry M | Surgically implantable knee prosthesis |
US7491235B2 (en) | 1999-05-10 | 2009-02-17 | Fell Barry M | Surgically implantable knee prosthesis |
US7796791B2 (en) | 2002-11-07 | 2010-09-14 | Conformis, Inc. | Methods for determining meniscal size and shape and for devising treatment |
US7799077B2 (en) | 2002-10-07 | 2010-09-21 | Conformis, Inc. | Minimally invasive joint implant with 3-dimensional geometry matching the articular surfaces |
USRE43282E1 (en) | 1998-09-14 | 2012-03-27 | The Board Of Trustees Of The Leland Stanford Junior University | Assessing the condition of a joint and devising treatment |
US8545569B2 (en) | 2001-05-25 | 2013-10-01 | Conformis, Inc. | Patient selectable knee arthroplasty devices |
US8808375B2 (en) | 2003-12-17 | 2014-08-19 | Surgenco, Llc | Anti-backout arthroscopic uni-compartmental prosthesis |
US8862202B2 (en) | 1998-09-14 | 2014-10-14 | The Board Of Trustees Of The Leland Stanford Junior University | Assessing the condition of a joint and preventing damage |
US8882847B2 (en) | 2001-05-25 | 2014-11-11 | Conformis, Inc. | Patient selectable knee joint arthroplasty devices |
US8906107B2 (en) | 2001-05-25 | 2014-12-09 | Conformis, Inc. | Patient-adapted and improved orthopedic implants, designs and related tools |
US8951260B2 (en) | 2001-05-25 | 2015-02-10 | Conformis, Inc. | Surgical cutting guide |
US8951259B2 (en) | 2001-05-25 | 2015-02-10 | Conformis, Inc. | Patient selectable joint arthroplasty devices and surgical tools |
US8968320B2 (en) | 2007-12-18 | 2015-03-03 | Otismed Corporation | System and method for manufacturing arthroplasty jigs |
US8998915B2 (en) | 2001-05-25 | 2015-04-07 | Conformis, Inc. | Joint arthroplasty devices and surgical tools |
US9017334B2 (en) | 2009-02-24 | 2015-04-28 | Microport Orthopedics Holdings Inc. | Patient specific surgical guide locator and mount |
US9017336B2 (en) | 2006-02-15 | 2015-04-28 | Otismed Corporation | Arthroplasty devices and related methods |
US9020788B2 (en) | 1997-01-08 | 2015-04-28 | Conformis, Inc. | Patient-adapted and improved articular implants, designs and related guide tools |
US9023050B2 (en) | 2001-05-25 | 2015-05-05 | Conformis, Inc. | Surgical tools for arthroplasty |
US9055953B2 (en) | 2001-05-25 | 2015-06-16 | Conformis, Inc. | Methods and compositions for articular repair |
US9066728B2 (en) | 2001-05-25 | 2015-06-30 | Conformis, Inc. | Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty |
US9180015B2 (en) | 2008-03-05 | 2015-11-10 | Conformis, Inc. | Implants for altering wear patterns of articular surfaces |
US9208263B2 (en) | 2008-04-30 | 2015-12-08 | Howmedica Osteonics Corporation | System and method for image segmentation in generating computer models of a joint to undergo arthroplasty |
US9286686B2 (en) | 1998-09-14 | 2016-03-15 | The Board Of Trustees Of The Leland Stanford Junior University | Assessing the condition of a joint and assessing cartilage loss |
US9308091B2 (en) | 2001-05-25 | 2016-04-12 | Conformis, Inc. | Devices and methods for treatment of facet and other joints |
US9308053B2 (en) | 2006-02-06 | 2016-04-12 | Conformis, Inc. | Patient-specific joint arthroplasty devices for ligament repair |
US9326780B2 (en) | 2006-02-06 | 2016-05-03 | Conformis, Inc. | Patient selectable joint arthroplasty devices and surgical tools incorporating anatomical relief |
US9387079B2 (en) | 2001-05-25 | 2016-07-12 | Conformis, Inc. | Patient-adapted and improved articular implants, designs and related guide tools |
US9402637B2 (en) | 2012-10-11 | 2016-08-02 | Howmedica Osteonics Corporation | Customized arthroplasty cutting guides and surgical methods using the same |
US9408618B2 (en) | 2008-02-29 | 2016-08-09 | Howmedica Osteonics Corporation | Total hip replacement surgical guide tool |
US9486226B2 (en) | 2012-04-18 | 2016-11-08 | Conformis, Inc. | Tibial guides, tools, and techniques for resecting the tibial plateau |
US9495483B2 (en) | 2001-05-25 | 2016-11-15 | Conformis, Inc. | Automated Systems for manufacturing patient-specific orthopedic implants and instrumentation |
US9579110B2 (en) | 2001-05-25 | 2017-02-28 | Conformis, Inc. | Patient selectable joint arthroplasty devices and surgical tools |
US9603711B2 (en) | 2001-05-25 | 2017-03-28 | Conformis, Inc. | Patient-adapted and improved articular implants, designs and related guide tools |
US9646113B2 (en) | 2008-04-29 | 2017-05-09 | Howmedica Osteonics Corporation | Generation of a computerized bone model representative of a pre-degenerated state and useable in the design and manufacture of arthroplasty devices |
US9642632B2 (en) | 2009-02-24 | 2017-05-09 | Microport Orthopedics Holdings Inc. | Orthopedic surgical guide |
US9649170B2 (en) | 2007-12-18 | 2017-05-16 | Howmedica Osteonics Corporation | Arthroplasty system and related methods |
US9649117B2 (en) | 2009-02-24 | 2017-05-16 | Microport Orthopedics Holdings, Inc. | Orthopedic surgical guide |
US9675471B2 (en) | 2012-06-11 | 2017-06-13 | Conformis, Inc. | Devices, techniques and methods for assessing joint spacing, balancing soft tissues and obtaining desired kinematics for joint implant components |
US9700971B2 (en) | 2001-05-25 | 2017-07-11 | Conformis, Inc. | Implant device and method for manufacture |
US9808262B2 (en) | 2006-02-15 | 2017-11-07 | Howmedica Osteonics Corporation | Arthroplasty devices and related methods |
US10085839B2 (en) | 2004-01-05 | 2018-10-02 | Conformis, Inc. | Patient-specific and patient-engineered orthopedic implants |
US10582934B2 (en) | 2007-11-27 | 2020-03-10 | Howmedica Osteonics Corporation | Generating MRI images usable for the creation of 3D bone models employed to make customized arthroplasty jigs |
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---|---|---|---|---|
EP0183670A1 (en) * | 1984-11-28 | 1986-06-04 | Björn Albrektsson | Artificial menisco-tibial joint |
EP0349173A1 (en) * | 1988-06-22 | 1990-01-03 | John Polyzoides | Knee prosthesis |
-
1994
- 1994-04-11 GB GB9407153A patent/GB9407153D0/en active Pending
-
1995
- 1995-04-11 AU AU21456/95A patent/AU2145695A/en not_active Abandoned
- 1995-04-11 EP EP95914473A patent/EP0702537A1/en not_active Withdrawn
- 1995-04-11 WO PCT/GB1995/000821 patent/WO1995027450A1/en not_active Application Discontinuation
Patent Citations (2)
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Also Published As
Publication number | Publication date |
---|---|
AU2145695A (en) | 1995-10-30 |
GB9407153D0 (en) | 1994-06-01 |
EP0702537A1 (en) | 1996-03-27 |
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